PLEASE HELP!!!

Solve the system of equations using the substitution method.

x=3+1/2y
−2x−y=3

Enter your answer, as decimals, in the boxes.

( , )

Answers

Answer 1

Answer:

x = 3+1/2 y -----Equation-1

-2x-y = 2 -------Equation-1

Multiplying equation 1 by 2  we get

2x = 2*(3+1/2y)

2x = 6+y

y = 2x-6

substituting the value of of y in equation2

-2x - (2x-6) = 2

-2x -2x +6 = 2

-4x = 2-6

-4x = -4

x = -4/-4 = 1

y = 2x-6 = 2-6 = -4

x = 1

y = -4

Step-by-step explanation:

Answer 2

Answer:

x=0.75 and Y=-4.5

Step-by-step explanation:

let x=3+1/2y.....(1)

-2x-y=3.......(2)

substitute (1) into (2)

-2(3+1/2y)-y=3

-6-y-y=3

-2y=9

y=-9/2

put y=-9/2 into (1)

x=3+(1/2)(-9/2)

x=-4.5


Related Questions

Find the value of N such that each expression is a perfect square trinomial for each of the following questions

1) p^2 - 6p + n

2) m^2 - 8m + n

3) v^2 + 24v + n

4) y^2 - 40y + n

5) v^2 - 36w + n

Answers

Answer:

The answers are below

Step-by-step explanation:

1) p² - 6p + n =  p² - 6p + (3)² = (p-3)²         n = 9  

2) m² - 8m + n  = m² - 8m + (4)² = (m-4)²       n= 16

3) v² + 24v + n  =  v² + 24v + (12)² = (v + 12)²   n=144

4) y² - 40y + n  = y² - 40y + (20)² = (y - 20)²    n= 400

5) v² - 36w + n =  v² - 36w + (18)² = (v - 18)²  n = 324

In a basic sine curve, where can the zeros NOT be found?

Answers

Answer:

At the maxium point

Step-by-step explanation:

A maxium point is a point where the function gets the higher value. For example, in the basic sine curve, we can find a maxium point when [tex]x=\frac{\pi }{2}[/tex]. We won't find any maxium point when x=0.

As you can see on the graph I attached, the zeros of a basic sine curve (or, said in other words, the points were x=0), are at the beginning, ath the middle and at the end of the function's graphic.

Freedonia has 50 senators. Each senator is either honest or corrupt. Suppose you know that at least one of the Freedonian senators is honest and that, given any two Freedonian senators, at least one is corrupt. Based on these facts, you can determine how many Freedonian senators are honest and how many are corrupt.

Answers

Answer:

There are 49 corrupt senators and 1 honest senator.

Step-by-step explanation:

Freedonia has 50 senators. Each senator is either honest or corrupt. At least one of the Freedonian senators is honest.

As we can see that there are no two senators where both of them are honest. So either there is one senerator who is honest or none.

As given that at least one of the Freedonian senators is honest.

Hence, we can conclude there is one and only one honest senator.

Final answer:

In Freedonia's senate, there must be one honest senator and forty-nine corrupt senators to satisfy the given conditions.

Explanation:

To solve the problem presented, we must work under the conditions that in Freedonia's senate of 50 senators, which implies that there are 50 senators in total, each is either honest or corrupt, at least one senator is honest, and in any pair of senators, at least one is corrupt. This means it's impossible to have two honest senators together, as this would contradict the condition that in any pair of senators, there must be at least one corrupt senator.

Given that there is at least one honest senator, we can use logic to deduce the following: If we were to assume that there are two honest senators, we would have a pair of senators where both are honest, which violates the given condition. Therefore, there can be only one honest senator in Freedonia's senate to meet all the conditions laid out in the problem.

Since the total number of senators is 50, and we have established that there is only one honest senator, it follows that the remaining 49 senators must be corrupt. Hence, the Freedonia's senate consists of one honest senator and forty-nine corrupt senators.

Enter your answer and show all the steps that you use to solve this problem in the space provided.


x y
7 11
8 13
9 15
10 17



Determine whether y varies directly with x. If so, find the constant of variation k and write the equation.

Answers

Answer:

  y DOES NOT vary directly with x

Step-by-step explanation:

If variation is direct, the ratio of y to x is a constant. Here, we have ...

  11/7 ≠ 13/8

so variation is not direct.

___

It appears that y = 2x-3, rather than y = kx for some k. The added constant (-3) means variation is not direct.

Final answer:

To determine if y varies directly with x, we calculate the ratios between the corresponding values. The ratios are approximately constant, so y varies directly with x. The equation representing the direct variation is y = 1.57x.

Explanation:

To determine whether y varies directly with x, we need to check if the ratio between the corresponding values of y and x is constant. Let's calculate the ratio for each pair of values:

For x = 7, y = 11, the ratio is 11/7 = 1.57For x = 8, y = 13, the ratio is 13/8 = 1.63For x = 9, y = 15, the ratio is 15/9 ≈ 1.67For x = 10, y = 17, the ratio is 17/10 = 1.7

Since the ratios are approximately constant, we can conclude that y varies directly with x. To find the constant of variation (k), we can choose any of the ratios. Let's take the ratio from the first pair: 11/7 ≈ 1.57. Therefore, the equation that represents the direct variation is y = 1.57x.

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Mr.Nolan's code for his ATM card is a four digit number. The digits of the code are the prime factors of 84 listed from least to greatest. What is the code for Mr.Nolan's ATM card?

Answers

Answer:

  2237

Step-by-step explanation:

84 = 2·2·3·7 . . . . . . prime factorization

For school photos, 1/5 of the students choose to have a blue background. 2/5 of the students chose to have purple and 1/5 chose to have a gray background. What portions of the students choose to have another background

Answers

Answer:

1/5 is the answer

Step-by-step explanation:

1/5 had blue

2/5 had purple

1/5 had gray

add those together you get 4/5

leaving you with 1/5 who chose different backgrounds.

Solve for y.
byl – 19 =-15
If there is more than one solution, separate them with commas,
If there is no solution, click on "No solution".

Answers

Answer:

Solution: -4, 4

Step-by-step explanation:

You need to do 2 cases:

Case 1: [tex]y\geq 0[/tex]

[tex]When\ y\geq 0 => | y | = y[/tex]

y - 19 = -15

y = 19 - 15

y = 4

Case 2: [tex]y< 0[/tex]

[tex]When\ y < 0 => |y| = -y[/tex]

-y -19 = -15

-19 + 15 = y

-4 = y

Both are solutions of the equation.

Answer:

-4, 4 would be your answer

Step-by-step explanation:

Please help!!! step by step​

Answers

I will help you with 3.
Step one isolate y: y=(-5x-4)/2
Slope: the slope is the number next to the x (only in linear function), so distribute the 1/2 and you get slope=-5/2

Y-intercept you get when x=0, plug in x=0 in the equation and solve for y to get the y coordinate
2y=-4. y=-2
Answer=(0,-2)

X-intercept is found by making y=0 (so basically do the same as above but for x now)
5x=-4 x=-4/5
Answer=(-0.8,0)

To graph it all you do is plug in an x value, preferably on the equation where we isolated y, but it doesn’t really matter.

Paolo buys a used car for $3,500 and wants to fill it up with gasoline. His gas tank holds 15 gallons and is currently empty. Paolo has $100. One gas station sells gas for $2.50 per gallon. The station across the street sells gas for $2.25 per gallon. What is the cheapest cost to fill up Paolo's tank?

Round your answer to the nearest hundredth. Leave the dollar sign off your answer, so for example if your answer is $10.25, write 10.25.

Answers

The one gas station that sells gas for $2.50 would be 37.50 to fill up his gas tank, but the other gas station for $2.25 is only 33.75 to fill up his tank. The second gas station would be the cheapest cost.

The cheapest cost to fill the Paolo's tank = $33.75

We have Paolo who bought a used car for $3,500 and wants to fill it up with gasoline. His gas tank holds 15 gallons and is currently empty. Paolo has $100. One gas station sells gas for $2.50 per gallon. The station across the street sells gas for $2.25 per gallon.

We have to determine the cheapest cost to fill up Paolo's tank.

What is mathematics important in Price Estimation ?

The price estimation is important in mathematics as it helps us to create mathematical relations among the various factors on which the price depends in order to extract accurate results.

According to question, we have -

Cost of Car = $3500.

Car's gasoline capacity = 15 gallons.

Amount of money with Paolo = $100.

Cost of gas at station A = $2.25.

Cost of gas at station B = $2.50.

Case 1 - If Paolo goes to Station A

Total cost to fill the tank = 2.25 x 15 = $33.75

Case 2 - If Paolo goes to Station B

Total cost to fill the tank = 2.50 x 15 = $37.50

Hence, the cheapest cost to fill the Paolo's tank = $33.75

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Jane has been growing two bacteria farms. Bacteria farm Rod has a starting population of 2 bacteria, while Bacteria farm Sphere has a starting population of 8 bacteria. However, Jane starts growing Rod five hours before she starts growing Sphere. At 8 p.m., Jane checks her farms and finds that they have the exact same population. If the population of Rod doubles every hour, but the population of Sphere is quadrupled every hour, how many hours ago did she start growing Sphere?

Answers

Answer: Jane started growing Sphere 3 hours ago

Step-by-step explanation:

Farm Rod starting population (Rsp) = 2

Farm Sphere starting population (Ssp) = 8

Let´s name "Rh" the quantity of hours since Rod started growing, and

"Sh" the quantity of hours since Sphere started growing.

And, let´s name "R" the population of farm Rod at 8 p.m. and "S" the population of farm Sphere at 8 p.m.

Population of Rod doubles every hour, therefore:

R = [tex]Rsp * 2^{Rh}[/tex]

R = [tex]2(2^{Rh})[/tex]

Population of Sphere is quadrupled every hour, therefore:

S = [tex]Ssp * 4^{Rh}[/tex]

S = [tex]8(4^{Rh})[/tex]

At 8 p.m. Jane found that R = S

Therefore, at 8 p.m:

[tex]2(2^{Rh})[/tex] = [tex]8(4^{Sh})[/tex]

dividing both sides by 2

[tex]2^{Rh} =4(4^{Sh})[/tex]

adding exponents

[tex]2^{Rh} = 4^{Sh+1}[/tex]

[tex]2^{Rh} =2^{2^{Sh+1} }[/tex]

the bases are the same; exponents must be the same

Rh = 2Sh + 2    (equation 1)

And we also know that Jane started growing Rod five hours before Sphere:

Rh = Sh + 5    (equation 2)

Replacing equation 2 into equation 1:

(Sh + 5) = 2Sh + 2

5 - 2 = 2Sh - Sh

3 = Sh, or

Sh = 3

Jane started growing Sphere 3 hours ago.  

A truck can be rented from Company A for ​$130 a day plus ​$0.20 per mile. Company B charges ​$70 a day plus ​$0.30 per mile to rent the same truck. Find the number of miles in a day at which the rental costs for Company A and Company B are the same.

Answers

130+x/5=70+3x/10 x=400

Professor Green is interested in determining the average SAT score for the entire population of individuals who took the SAT. She wants to know how her class compares to the population of students who took the SAT. She finds that the average SAT score for the population is 1000. Is this score an example of a descriptive or an inferential statistic?

Answers

Answer:

Descriptive statistics

Explanation:

The population average is a descriptive statistic. It informs about how the population looks like, in this case, the population looks like having a average of 1000.

If, using her class's average where to infer the population average that is inferential statistic. But that is not the case

A data set includes the entries 2​, 4​, 5​, 7​, 7​, and 10. Complete the data set with an entry between 1 and 10 so that the median and mode of the set are equal.

Answers

Answer:

It can be any digit between 7, 8 and 9.

Step-by-step explanation:

The given data set is: 2​, 4​, 5​, 7​, 7​, 10

Here mode is 7, So we have to make our median equal to 7.

If one more data point will be included in the data set then we will have an odd number of observations.

For getting a median equal to 7 we have to add a number between 7 and 10 or it can be equal to 7.

Now, if we add any data points between 7, 8 and 9 then our median and mode will equal to 7.

Hence, the any one number between 7, 8 and 9 can be included in given data set to get both median and mean equal.

Further, the Median is the middle observation of the given data. It can be found by following steps:

Arranging data in ascending or descending order.

Taking the average of the middle two values if the total number of observations is even, and this average is our median.

or, if we odd number of observation then the most middle value is our median.

The mode is the observation which has a high number of repetitions (frequency).

Final answer:

The entry that should be added to the data set 2, 4, 5, 7, 7, and 10 to make the median and mode equal is 7. This is because the current mode is 7, and to have the median also equal to 7, a 7 must be added to the data set.

Explanation:

The goal is to add an entry between 1 and 10 to your data set (which currently includes 2​, 4​, 5​, 7​, 7​, and 10) that will make the median and mode equal. To start, let's understand what the median and mode are. The median is the middle value in an ordered data set. If there's an even number of values in the set, the median is the average of the two middle values. The mode, on the other hand, is the most frequent value or values in a data set.

In your original data set, the mode is 7, as it appears twice. Currently, with six numbers in the data set, the median would be the average of the 3rd and 4th numbers when ordered (5 and 7), so the median is 6. To match the mode (7), a 7 needs to be added to the data set. Now the median is (7 + 7) / 2 = 7, which matches the mode of 7. So, the number you need to add to your dataset to make the median and mode both equal 7 is 7.

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What is the simplified form of StartRoot 64 x Superscript 16 Baseline EndRoot?

Answers

Answer:

[tex]8x^8[/tex] (Please see my interpretation of the problem.)

The problem:

Simplify [tex]\sqrt{64x^{16}}[/tex] (Please tell me if I did or didn't interpret your problem correctly. Thank you!)

Step-by-step explanation:

[tex]\sqrt{64x^{16}}[/tex]    (Given)

[tex]\sqrt{64}\sqrt{x^{16}}[/tex] (if u and v are positive then [tex]\sqrt{uv}=\sqrt{u}\sqrt{v}[/tex])

[tex]8\sqrt[2]{x^{16}}[/tex]  ([tex]\sqrt{ }=\sqrt[2]{}[/tex])

[tex]8x^{\frac{16}{2}}[/tex]  ([tex]\sqrt[n]{x^m}=x^\frac{m}{n}[/tex])

[tex]8x^8[/tex]   (simplified/reduced the fractional-exponent)

Answer:

8x8

Step-by-step explanation:

so B

Ted brought a cooler containg 7.5 liters of water to a picnic.If 500 milliters of water milliliters of water are served to each person ,how many people can get water before the cooler is empty?

Answers

Answer:

Step-by-step explanation:

15 people can be served because a liter equals to 1000 milliliters and that means that 7 times two equals 14 plus the other 500 milliliters then that's 15.

15 people can get water before the cooler is empty.

In order to find the number of people who would be able to get water before the cooler empties, you need to divide the total quantity of water in the cooler by the quantity given to each person.

To do that, both quantities have to have the same unit. The liters should therefore be converted to milliliters.

1 liter = 1,000 milliliters

7.5 liters = 7.5 x 1,000

= 7,500 milliliters

The number of people that would get a drink is:

= Quantity of water in cooler / quantity of water per person

= 7,500 / 500

= 15 people

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Please check for me and if any are incorrect please explain!

Answers

Answer:  (1) 14.4%   (2) 3.78%   (3) $222.48     (4) 21,176.47    

               (5) $425    (6) 14.3 cents per mile

Step-by-step explanation:

1) This is a calculator question. I = 0.144    --> 14.4%

[tex]A=P\bigg(1+\dfrac{r}{n}\bigg)^{nt}\\\\\bullet \text{A = Accrued amount (total amount paid)}\\\bullet \text{P = Principal (initial cost of the car)}\\\bullet \text{r = rate (interest rate in decimal form)}\\\bullet \text{n = number of times in a year (number of months)}\\\bullet \text{t = number of years}\\\\A = m \times nt\\\bullet \text{m = monthly payment amount}\\\bullet \text{nt = number of payments made}\\\implies m\times nt=P\bigg(1+\dfrac{r}{n}\bigg)^{nt}[/tex]

2) m = 93.33

   nt = 36

   P = 3000

   n = 12

[tex]m\times nt=P\bigg(1+\dfrac{r}{n}\bigg)^{nt}\\\\\\93.33\times 36=3000\bigg(1+\dfrac{r}{12}\bigg)^{36}\\\\\\3359.88=3000\bigg(1+\dfrac{r}{12}\bigg)^{36}\\\\\\1.11996=\bigg(1+\dfrac{r}{12}\bigg)^{36}\\\\\\1.00315198=1+\dfrac{r}{12}\\\\\\0.00315198=\dfrac{r}{12}\\\\\\0.0378=r\\\\\\\large\boxed{3.78\%}=r[/tex]

3) same equation as #2 but deduct the down payment from the Principal

   nt = 42

   P - d = 5,555 - 555 = 5,000

   r = 18% --> 0.18

   n = 12

[tex]m\times nt=P\bigg(1+\dfrac{r}{n}\bigg)^{nt}\\\\\\m\times 42=(5,555-555)\bigg(1+\dfrac{.18}{12}\bigg)^{42}\\\\\\42m=5000(1.015)^{42}\\\\\\42m=5000(1.868847)\\\\\\42m=9344.23557\\\\\\m=\large\boxed{222.48}[/tex]

4)  Gas  +  Oil  = cost per mile × number of miles

   1000 + 800 = 0.085x

               1800 = 0.085x

        [tex]\large\boxed{21,176.47}=x[/tex]

5)  [tex]\text{Annual Depreciation}=\dfrac{\text{Cost of car - Trade-in value}}{\text{Years driven}}[/tex]

[tex].\qquad =\dfrac{3800-1250}{6}\\\\\\.\qquad =\dfrac{2550}{6}\\\\\\.\qquad = \large\boxed{425}[/tex]

6) [tex]\dfrac{\text{(Cost of car - Market value) + Gas & Oil + Parts, Maintenance + Insurance}}{\text{Miles driven}}[/tex]

[tex]=\dfrac{(5000-3800)+750+250+300}{17,500}\\\\\\=\dfrac{2500}{17,500}\\\\\\=0.142857\\\\=\large\boxed{14.3\ cents\ per\ mile}[/tex]

You are helping Bobby find the length and width of his garden. He knows that the area of the garden is LaTeX: x^2+8x+15x 2 + 8 x + 15 square feet. The length of his garden is LaTeX: \left(x+5\right)( x + 5 )square feet.

Part 1) What is the width of the garden? Explain how you came to this conclusion and what method you used (algebra tiles, the x-method, another method, etc. )

Part 2) If LaTeX: xx is 3 feet, what would the area of the garden be? Show your work.

Answers

Answer:

If the length of the garden is (x + 5) then the width will be (x + 3)

The area of the garden is 48 sq feet

Step-by-step explanation:

The garden is x^2 + 8x + 15 sq feet

Use the factorization method and break the middle term:

x^2+3x+5x+15

Group the first two terms and last two terms:

(x^2+3x)+(5x+15)

Take out the common from each pair.

x(x+3) +5(x+3)

(x+5)(x+3)

We have already been given that x+5 is the length. Then this shows that x+5 is the length and x+3 is the width

If the length of the garden is (x + 5) then the width will be (x + 3)

The method I used is the F.O.I.L. method

The letters FOIL stand for First, Outer, Inner, Last. First means multiply the terms which occur first in each binomial. Then Outer means multiply the outermost terms in the product.

(x + 5)(x + 3) = x^2 + 3x + 5x + 15

Solve the like terms:

= x^2 + 8x + 15

b) x= 3 feet

(x + 5)(x + 3)

Substitute the value in the expression

(3 + 3)(5 + 3)= (8)(6)= 48 square feet

Area of the garden is 48 sq feet.

A hackberry tree has roots that reach a depth of 6 adn 5/12 meters. The top of the tree is 18.28 meters above the ground. Find the total height from the bottom of the roots to the top of the tree.

Answers

The total height from bottom of the roots to the top of the tree is 24.70 meter.

Answer:

  24 209/300 m ≈ 24.69667 m ≈ 24.70 m

Step-by-step explanation:

The total height is the sum of the above-ground height and the below-ground depth:

  6 5/12 m + 18.28 m = (6 + 18) m + (5/12 + 7/25) m

  = 24 m + (125+84)/300 m

  = 24 209/300 m ≈ 24.6966666... m ≈ 24.70 m

_____

The problem statement does not say what rounding is required. The least-resolution number is 18.28, with resolution of 1 cm, so the answer might rightly be rounded to that resolution: 24.70 m. If we take the numbers to be exact, their sum can only be represented exactly as the ratio of integers or a mixed number or a repeating decimal.

A species of fish was added to a lake. The population size P(t) of this species can be modeled by the following exponential function:P(t)=1500/(1+7e^-0.4t)where t is the number of years from the time the species was added to the lake.Find the initial population size of the species and the population size after 9 years. Round your answers to the nearest whole number as necessary.

Answers

Initial population size is 188 and after 9 years we get 1259 fishes.

We have given that the function

[tex]P(t)=\frac{1500}{1+7e^(-0.04t)}[/tex]

Where t is the number of years from the time the species was added to the lake.

We have to find the initial population size of the species and the population size after 9 years.

where p(0) is the population size of species and p(9) is the population size after 9 years.

Therefore we have the given function is at t=0

[tex]P(0)=\frac{1500}{1+7e^(-0.04(0)))}=\frac{1500}{1+07e^0} \\=\frac{1500}{1+7} \\=\frac{1500}{8} \\=187.5\\=188[/tex]

at t=9 we have

[tex]P(9)=\frac{1500}{1+7ex^{-0.4(9)} }\\=\frac{1500}{1+7e^{-3.6} } \\=\frac{1500}{1.191}\\ =1259.16\\=1259 fishes[/tex]

Therefore after 9 years we get 1259 fishes.

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The initial population size of the species is approximately 188. After 9 years, the population size is approximately 1260.

To find the initial population size of the species, we need to evaluate the population function ( P(t) ) at ( t = 0 ).

Given the population function:

[tex]\[ P(t) = \frac{1500}{1 + 7e^{-0.4t}} \][/tex]

1. **Initial population size (( P(0) )):**

  Substitute ( t = 0 ) into the function:

[tex]\[ P(0) = \frac{1500}{1 + 7e^{-0.4 \cdot 0}} \][/tex]

[tex]\[ P(0) = \frac{1500}{1 + 7e^0} \][/tex]

 [tex]\[ P(0) = \frac{1500}{1 + 7 \cdot 1} \][/tex]

[tex]\[ P(0) = \frac{1500}{1 + 7} \][/tex]

[tex]\[ P(0) = \frac{1500}{8} \][/tex]

[tex]\[ P(0) = 187.5 \][/tex]

  Round to the nearest whole number:

[tex]\[ P(0) \approx 188 \][/tex]

  So, the initial population size is[tex]\( \boxed{188} \).[/tex]

2. **Population size after 9 years (( P(9) )):**

  Substitute ( t = 9 ) into the function:

[tex]\[ P(9) = \frac{1500}{1 + 7e^{-0.4 \cdot 9}} \][/tex]

[tex]\[ P(9) = \frac{1500}{1 + 7e^{-3.6}} \][/tex]

  Calculate [tex]\( e^{-3.6} \):[/tex]

[tex]\[ e^{-3.6} \approx 0.02732 \][/tex]

  Substitute this value back into the equation:

[tex]\[ P(9) = \frac{1500}{1 + 7 \cdot 0.02732} \][/tex]

[tex]\[ P(9) = \frac{1500}{1 + 0.19124} \][/tex]

 [tex]\[ P(9) = \frac{1500}{1.19124} \][/tex]

[tex]\[ P(9) \approx 1260 \][/tex]

  Round to the nearest whole number:

[tex]\[ P(9) \approx \boxed{1260} \][/tex]

  So, the population size after 9 years is [tex]\( \boxed{1260} \).[/tex]

Suppose you need to deliver 40 terabytes of data to your co-workers in Atlanta (200 km). You have an available 100 Mbps dedicated link for data transfer. Alternatively, your friend raises homing pigeons and would be willing to let you borrow one. You have a single 1 TB SD card you can strap to the pigeon. Assume pigeons can fly 1000 km per day and that it takes no time to copy to/from the SD card.

Answers

Answer: All data will be sent in 89.39 hours

Step-by-step explanation:

Data transfer rate: 100 Mbps=100 [tex]\frac{Mb}{s}[/tex] ×[tex]\frac{1Tb}{1024^{2} Mb}[/tex]×[tex]\frac{3600s}{h}[/tex]=0.3433 [tex]\frac{Tb}{h}[/tex]

The pigeon can fly 1000 km/day and it needs to fly 400 km (round trip).

Pigeon rate: [tex]\frac{1000km}{24h}[/tex]=41.67 [tex]\frac{km}{h}[/tex]

Time of round trip: 400 km÷[tex]\frac{1000km}{24h}[/tex]=9.6 h

So the pigeon can send 1 Tb every 9.6 hours.

If we sum the rates we can get the time for sending all the data:

40 Tb= (0.3433 Tb/h + 1 Tb/9.6h)×t

T= 89.39 hours

Evaluate the expression uv^2 + 5uv + u^2 for u = 3 and v = 4. HELP PLEASE!!


A 84

B 96

C 117

D 112

Answers

Answer:

The answer to your question is letter C.117

Step-by-step explanation:

The original expression is: uv² +5uv + u²

and u= 3 and v = 4

Then: (3)(4)² + 5(3)(4) + (3)²        Substitution

          (3)(16) + 5(12) + 9             Expanding

          48 + 50 + 9                      Simplify

          117                                    Result

The value of the algebraic expression [tex]uv^2 + 5uv + u^2[/tex] at u = 3, v = 4 is 117

Third option is correct

What is algebraic expression?

Algebraic expression consist of variables and numbers connected with addition, subtraction, multiplication and division.

For example - in 2x + 3y -7,  the numbers are 2, 3, 7, variables are x, y and operations are addition, subtraction and multiplication.

Here,

[tex]uv^2 + 5uv + u^2[/tex]

Here, u = 3, v = 4

[tex]3(4)^2 + 5(3)(4) + (3)^2\\48 + 60 + 9\\117[/tex]

Third option is correct.

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Anyone know this Geometry problem?

Answers

Answer:

ST = 20

Step-by-step explanation:

RT is the sum of RS and ST

Replacing with length you get:

17 + x + 6 = 3x - 56

17 + 6 + 5 = 3x - x

28 = 2x

14 = x

ST = x + 6 = 14 + 6 = 20

A farmer produces both beans and corn on her farm. If she must give up 16 bushels of corn to be able to get 6 bushels of beans, then her opportunity cost of 1 bushel of beans is ______________.

Answers

Answer:

2.67 bushels of corn

Step-by-step explanation:

We can see it in the picture.

Jane and Jill want their mom to ride the rollercoaster with them, but she thinks it will be too fast. She asks the girls to find out how fast the rollercoaster will be travelling. They find out that the speed of the rollercoaster, in miles per hour, is modeled by the function g(x) = x4 − 4x2 + 7x − 8, where x is time measured in seconds. How fast is the rollercoaster travelling at 2 seconds?

6 miles per hour
22 miles per hour
26 miles per hour
54 miles per hour

Answers

Answer:

6 mph

Step-by-step explanation:

g(x) = x^4 − 4x^2 + 7x − 8

when x = 2,

g(2) = (2)^4 - 4(2^2) + 7 (2) - 8

= 16 - 16 + 14 - 8

= 6 mph

Hey!

-----------------------------------------

Solution:

We know that 2 = x

g(x) = (2)^4 - 4(2)^2 + 7(2) - 8

g(x) = 16 - 16 + 14 - 8

g(x) = 0 + 14 - 8

g(x) = 14 - 8

g(x) = 6

-----------------------------------------

Answer:

6 miles per hour!

-----------------------------------------

Hope This Helped! Good Luck!

What is an algebraic expression to find the number of squares in the border of a 75x75 grid?

Answers

Answer:

Well, if the grip is 75 x 75, you can rule out that the grid is 75 squares in each border.

Step-by-step explanation:

75 x 75 = a x b

a= horizontal side lengths

b= vertical side lengths

Rule that a= 75 squares and b= 75 squares.

Chef Andy needed to adapt his recipes for his European kitchen staff in Paris. He was​ 1-pound portions of​ entrecote, 2 ounces of​ Béarnaise, and 4 ounces of asparagus. What are the metric conversions of each of these​ items?

Answers

Answer:

1 pound = 0.454 kilograms

1 ounce = 0.0296 liters

1 ounce = 0.0283 kilograms

Step-by-step explanation:

You need to convert the quantities to their corresponding unit.

Convert pounds to kilograms (For the entrecote)

1 pound = 0.454 kilograms

Thus, 1 pound of entrecote = 0.454 kilograms

Ounces to liters (for the Béarnaise, since it is a liquid)

1 ounce = 0.0296 liters

2 ounces of Béarnaise = 0.0592 liters

Ounces to kilograms (for the asparagus)

1 ounce = 0.0283 kilograms

4 ounces of asparagus =0.1132 kilograms

Final answer:

By using unit conversion and dimensional analysis, the 1 pound of entrecôte converts to roughly 0.4536 kg, 2 ounces of Béarnaise to around 56.7 grams, and 4 ounces of asparagus to approximately 113.4 grams.

Explanation:

To answer your question about Chef Andy and his need to convert his recipes to metric units for his European kitchen staff, we'll need to follow some simple unit conversion steps:

Firstly, to convert 1 pound of entrecote to kilograms, you should know that 1 pound is approximately equivalent to 0.4536 kilograms. So, Chef Andy's 1-pound portion of entrecote is roughly 0.4536 kg in the metric system.As for the 2 ounces of Béarnaise, 1 ounce is about 28.3495 grams. Multiply this by 2 and the result is the conversion for the Béarnaise sauce: around 56.7 grams.For the 4 ounces of asparagus, we do the same as with the Béarnaise. 1 ounce is about 28.3495 grams. Multiplying this by 4, we see that 4 ounces is approximately 113.4 grams.

By unit conversion and dimensional analysis, these are the metric conversions for each of those items. It's an essential method in fields like science, math, and of course, international cooking, where one often needs to convert from one type of unit to another.

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Caleb will be going to college next year. He would like to save some money for living expenses. Select the goal that would be the most helpful for him.

I will earn a college degree in business from the University of Vermont by the time I am twenty-two years old.

I will save $2,600 in one year by depositing $50 dollars per week in a savings account.

I will save $100 per paycheck.

I will attend college.

Answers

Answer:

save 100$ each check.

Step-by-step explanation:

Answer:

I will save $2,600 in one year by depositing $50 dollars per week in a savings account.

Step-by-step explanation:

When you set a goal, it should clearly state what you want to accomplish, it has to be measurable and relevant according to what you want to do. Also, it has to establish a deadline and it should be something that you can achieve.

According to this and the options given, the goal that would be most helpful for Caleb is I will save $2,600 in one year by depositing $50 dollars per week in a savings account because it is well defined, it is measurable and establishes a deadline as he will save $50 dollars per week to get $2600 in a year. Additionally, the goal can be accomplished and it is relevant to what he wants to do that is to save money for living expenses because he is going to college next year.

In a study of factors that might affect memory, research participants were assigned to drink either an alcoholic or a nonalcoholic beverage prior to completing a memory test. Those who drank the nonalcoholic beverage were assigned to the group. A) survey B) control C) experimental D) correlational

Answers

Answer:

Answer is B) control group

Step-by-step explanation:

Survey is when you ask questions to a group of people. Has nothing to do in this case. Correlational does not exist but correlation means the association between two groups.

In an experiment, you apply a treatment, or a conditions that differentiates groups and measure an outcome . In this case the treatment is drinking alcohol to measure memory. The group that receives the treatment is the experimental group and the one that not receives the treatment is the control because, we are comparing or controlling alcohol consumption in this group to measure differences in memory with the experimental group.

Una compañía de telefonía móvil en expansión ha gestionado durante el trimestre que finaliza ochocientas cincuenta mil llamadas al día. En el próximo trimstre espera llegar al millón e ir aumetado trimestralmente en la misma cantidad durante los próximos dos años. ¿Cuántas llamadas diarias espera gestionar dentro de dos años?

Answers

Answer:

[tex]2,050,000\ daily\ calls[/tex]

Step-by-step explanation:

The question in English is

An expanding mobile phone company handled eight hundred and fifty thousand calls a day during the quarter. In the next quarter it expects to reach one million and increase quarterly by the same amount over the next two years. How many daily calls do you expect to handle in two years?

Let

x ----> the number  of quarter

y ---> number of daily calls

we know that

we have the points

(0,850,000) and (1,1,000,000)

Find the slope m

[tex]m=(1,000,000-850,000)/(1-0)=150,000\ daily\ calls[/tex]

The linear equation that represent this situation is

[tex]y=150,000x+850,000[/tex]

How many daily calls do you expect to handle in two years?

In two years there are 8 quarterly

so

For x=8

substitute

[tex]y=150,000(8)+850,000=2,050,000\ daily\ calls[/tex]

What is the exact distance between point e and point f

Answers

Answer:

The answer to your question is: d = √73  

Step-by-step explanation:

data

Point E (-3, 4)

Point F (5, 1)

Formula

d = √((x2-x1)² + (y2-y1)²)

d = √(5-(-3))² + (1-4)²)          substitution

d= √ (5+3)² + (-3)²               simplify

d= √ 8² + -3²

d = √ 64 + 9

d = √73                               result

Final answer:

The distance between points E(5,1) and F(-3,4) in coordinate geometry is calculated by using the distance formula derived from the Pythagorean theorem. The computed distance between points E and F comes out to be √73 units.

Explanation:

The subject of this question is the distance formula in coordinate geometry, specifically between two points E(5, 1) and F(-3, 4). The formula is derived from the Pythagorean theorem and is represented as: D = √[(x₂ - x₁)² + (y₂ - y₁)²]. It is used to determine the simplest distance or 'path' between two points in a coordinate plane.

distance = √((x2 - x1)^2 + (y2 - y1)^2)

Substituting the coordinates of E and F, we have:

distance = √((-3 - 5)^2 + (4 - 1)^2)
distance = √((-8)^2 + (3)^2)

distance = √(64 + 9)

distance = √73

So, the exact distance between point E and point F is approximately √73 units.

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The complete question is given below:

What is the exact distance between point E and point F. The coordinates are E(5, 1) and F(-3, 4).

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