4(x − 3) − 5(x + 1) = 3 Which of the following algebraic properties is not needed to solve this equation?

Answers

Answer 1

Hi there!

To solve this problem, you need to use the distributive property. You distribute the 4 inside the parenthesis as well as the 5.

Hope this helps!

Related Questions

1. Solve the equation. -4x = 0
X = -4
X = 4
X = 0
X = 1

2. decide whether the given number is a solution of the given equation. Is 8 a solution of y + 9 = 17 ?
Yes or no

3. simplify the expression by combining like terms. 10x - x - 2x - x
8x
x² + 8x
6x
-x2 + 8x

4. Name the property shown. 12x( y ) = 12(xy)

Answers

1. is x=4
2. is yes
3. is 6x
4. is associative property of multiplication

A tour group charges a flat price for a tour of up to 20 people. The cost per person varies inversely with the number of people. If five people pay 135 each, what must 15 people pay per person.

Answers

Answer:
15 people must pay 45 unit currency each

Explanation:
Assume that the number of people is x and that the price per person is y.
We are given that the cost per person varies inversely with the number of people.
This means that as the number of people (x) increases, the cost per person (y) decreases and vice versa

This can be translated into the following equation:
y = k / x
where k is the constant of proportionality.

Now, we need to get k.
We are given that:
for number of people (x) = 5, the charge per person (y) is 135.
Substitute with this in the above equation to get k as follows:
y = k / x
135 = k / 5
k = 135 * 5 = 675

The equation now became:
y = 675 / x

Finally, we want to get the cost per person (y) when the number of people (x) is 15.
All we have to do is substitute in the above equation to get the y as follows:
y = 675 / x
y = 675 / 15
y = 45

This means that, for a group of 15 people, each one will pay 45 unit currency

Hope this helps :)

Suppose you invest $500 at an annual interest rate of 8.2% compounded continuously. How much will you have in the account after 15 years? (1 point)

$1,671.74
$17,028.75
$1,710.61
$8,140.92

Answers

(1.082)^15(500)=$ 1,630.71. I do not see this figure as an option, but it is the correct response.

The formula to find the amount with principal P, rate of interest r and time t when it is compounded continuously is
A=Pe^(rt)
P=$500 r=8.2% n=15
A=500*e^(0.082*15)
=500*e^1.23
= 1710.61476814
Rounding off to the nearest hundredths, we have
A= $1,710.61

PLEASE ANSWER THIS EASY MATH QUESTION!!
WILL PROVIDE THE ANSWERS BELOW!!!

Answers

The answer is A , you can use Photomath for questions like this !!

PLEASE HELP ME ON THIS

Answers

The domain of the function is 80 to 180 because domain refers to the valid inputs of the function.

After receiving $42, the new domain (that Albert can afford) is from 80 to 147.

bracelet costs $8. Simone is also buying a necklace for her mother for $18. She believes that her total will be $98. Which expression could be used to estimate the reasonableness of Simone’s total? 8 × $8 + $10 8 × $8 + $18 10 × $8 + $20 10 × $10 + $10

Answers

she wrong is 26
i hope i helps

For this case what we should do is write the expression step by step.
"She believes that her total will be $ 98"
To get to this we have:
10 × $ 8 + $ 20
Rewriting:
10 × $ 8 + $ 20
$ 80 + $ 20
$ 100
Rate approximately equal to $ 98 with an extra $ 2.
Answer:
An expression that could be used to estimate the reasonableness of Simone's total is:
10 × $ 8 + $ 20

What is the domain of y = cos θ?
A. [-1, 1]
B. [0, infinity]
C. All real numbers
D. 2pi,

Answers

The domain of y = cos θ is all real numbers. This is because any real number can be plugged in for θ and y will be equal to a real number. This can be shown graphically because the y = cos θ will go on infinitely both to the right and left.

Answer:

Option C - All real numbers

Step-by-step explanation:

Given : Function [tex]y=\cos \theta[/tex]

To find : The domain of given function ?

Solution :

Domain is defined as the set of values for which function is defined.

We have given the function,

[tex]y=\cos \theta[/tex]

We know, for any value of [tex]\theta[/tex] the function [tex]y=\cos \theta[/tex] is defined.

Which means the set of all real numbers defined the given function i.e. [tex]x\in(-\infty,\infty)[/tex]

Therefore, Option C is correct.

The domain of [tex]y=\cos \theta[/tex] is all real numbers.

A light bulb manufacturing machine produces 72 light bulbs per minute. How much time would it take to make 5400 light bulbs?

Answers

(5400 bulbs)/(72 bulbs/min) = 75 min

It would take 75 minutes for the machine to make 5400 light bulbs.

Carpet sells for $3 per square foot and will cost you $810 to recarpet your rectangular room. if your room is 18 feet long, how many feet wide is it?

Answers

$810 ÷ 3 = 270 square feet
Area of the room is 270 square feet.

Area = 270 square feet, length = 18 feet

Area = Length x Width
270 = 18 x width
Width = 280 ÷ 18
Width = 15 feet

The room is 15 feet wide.

Javier bought a 20 oz smoothie that contains 450 total calories how many calories does a smoothie contain per ounce

Answers

20 oz = 450 calories
1 oz = 450 ÷ 20
1 oz = 22.5 calories

At the beginning of the spelling bee there were 60 participants. One-third of the participants were eliminated during the first round. One-fourth of the remaining participants were eliminate during the second round. One-sixth of the remaining participants were eliminated during the third round. How many participants were still cmpeting at the beginning of the fourth round?

Answers

Participants = 60
.
First round:
1/3 of 60 = 20
or
60 x 1/3
= 60/3
= 20
60 - 20 = 40
There are 20 participants that are eliminated on the first sound and 40 participants to move on to the second sound.
.
Participants = 40
Second round:
1/4 of 40 = 10
or
40 x 1/4
= 40/4
= 10
40 - 10 = 30
There are 10 participants that are eliminated on the second round and 30 participants that is moving on to the next round.
.
Participants = 30
Third round:
1/6 of 30 = 5
or
30 x 1/6
= 30/6
= 5
30 - 5 = 25
There are 5 participants that are eliminated on the third round and 25 participants to move on to the fourth round.
:)

By subtracting the eliminated participants in each round from the original number, it is determined that 25 participants were still competing at the beginning of the fourth round.

To find out how many participants were still competing at the beginning of the fourth round of the spelling bee, we need to perform some calculations based on the given percentages of participants eliminated in each round.

In the first round, one-third of the 60 participants were eliminated. This is 60 / 3 = 20 participants eliminated. So, 60 - 20 = 40 participants remained after the first round.In the second round, one-fourth of the remaining participants were eliminated. This is 40 / 4 = 10 participants eliminated. So, 40 - 10 = 30 participants remained after the second round.In the third round, one-sixth of the remaining participants were eliminated. This is 30 / 6 = 5 participants eliminated. So, 30 - 5 = 25 participants remained.

Therefore, 25 participants were still competing at the beginning of the fourth round.

Find the percent of increase from 4.5 inches to 13.5 inches.

Answers

Final answer:

To calculate the percent of increase from 4.5 inches to 13.5 inches, subtract the original value from the new value, divide by the original value, and then multiply by 100, resulting in a 200% increase.

Explanation:

To find the percent of increase from one number to another, you can use the formula: (New Value - Original Value) / Original Value × 100%. Applying this to the question, the original value is 4.5 inches, and the new value is 13.5 inches.

Calculate the increase: 13.5 - 4.5 = 9 inches.Divide the increase by the original number: 9 / 4.5 = 2.Convert this to a percentage by multiplying by 100: 2 × 100% = 200%.

Therefore, the percent of increase from 4.5 inches to 13.5 inches is 200%.

Mark has 36 drawings of horses and 4 drawings of spaceships. write and solve an equation to find how many times as many drawings of horses he has as spaceships.

Answers

We need to find how many horses there are for one spaceship. So, we can set up our equation like:

4x = 36

Dividing both sides by 4:

x = 9

Hope this helps!

36 divided by 4 = 9
(I need 20 letters)

The ordered pairs below represent a function

(-2,-17.5),(5,8.75),(0,-10),(-1,-13.75),(3,1.25)

What is the rate of change of the function?Round to the nearest hundreth if necessary. PLEASE HELP ASAP WILL AWARD BRAINLIEST!!!

Answers

Answer: The rate of change (or slope) is 3.75.

If you plot the points, you will see that they are linear. The rate of change is equal to the slope between the points. Since the slope is the same between all of them, pick two points and find the slope.

(8.75 - (-17.5) / ( 5 - (-2))
26.25 / 7
3.75

Answer:

The answer is 3.75.

Step-by-step explanation:

I did this before

twice the measure of an angle's complement less 6 is equal to 124 find the measure of the angle

Answers

Answer

you work it out the same way the first guy did, except instead of

2 (180-x) - 6 = 124, it's

2(90-x) -6 = 124.

the first guy divided by the supplement instead of the complement.

Step-by-step explanation:

Final answer:

To find the measure of the angle, you can use the equation 2(90 - x) - 6 = 124, where x represents the angle. By solving for x, you can determine that the measure of the angle is 25 degrees.

Explanation:

To find the measure of the angle, we can use the information provided in the question. Let's let the measure of the angle be x degrees. The complement of the angle can be found by subtracting the measure of the angle from 90 degrees, since the sum of an angle and its complement is always 90 degrees. Therefore, the complement of the angle is 90 - x degrees.

According to the given equation, twice the measure of the angle's complement less 6 is equal to 124. We can write this as 2(90 - x) - 6 = 124. Now we can solve for x:

2(90 - x) - 6 = 124

180 - 2x - 6 = 124

-2x + 174 = 124

-2x = -50

x = 25

Therefore, the measure of the angle is 25 degrees.

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one method of estimating is to

Answers

One way of estimating is to Round the numbers to the nearest whole number.

Hope this helps!

The answer is "A" because whenever you round (up or down) you are only changing the value a teeny bit, which only matters if you want to measure an exact amount of something. Using a calculator gives you the exact answer. Guess and check really doesn't work because there are ∞ numbers. Any answer is not fine because if the answer is 5 and you answer with 9633, that answer is obviously wrong. So, A is right.

Among 320 randomly selected airline travelers, the mean number of hours spent travelling per year is 24 hours and the standard deviation is 2.9. What is the margin of error, assuming a 90% confidence level? Round your answer to the nearest tenth. 0.01

Answers

Round your answer to the nearest tenth.. Answer= 0.3

The Margin of error for a 95% confidence level will be ..
Answer= greater than 0.3

Answer:

The margin of error assuming a 90% confidence level is 0.3

Step-by-step explanation:

Size of the sample: n=320

Mean: m=24

Standard deviation: s=2.9

Confidence interval: 90%

100(1-α)=90

Solving for α: Dividing by 100 both sides of the equation above:

100(1-α)/100=90/100

1-α=0.9

Subtracting 1 both sides of the equation:

1-α-1=0.9-1

-α=-0.1

Multiplying the equation by -1:

(-1)(-α=-0.1)

α=0.1

n= [z(1-α/2) s / E]^2

where E is the margin of error

z(1-α/2)=z(1-0.1/2)=z(1-0.05)=z(0.95)=1.64 (Table standard normal distribution)

z(1-α/2)=1.64

Replacing the known values in the equation above:

320= [(1.64) (2.9) / E]^2

320= (4.756/ E)^2

Solving for E: Square root both sides of the equation:

sqrt(320)=sqrt[ (4.756/ E)^2]

17.88854382=4.756/E

Cross multiplication:

17.88854382 E = 4.756

Dividing both sides of the equation by 17.88854382:

17.88854382 E / 17.88854382 = 4.756 / 17.88854382

E=0.265868486

Rounding tho the nearest tenth:

E=0.3

Given: ΔABC ≅ ΔFDE. . What is the length of segment DE rounded to the nearest tenth?. . 3.2. . 4.2. . 2.2. . 3.6. .

Answers

[tex]d= \sqrt{(3-2)^2 + (1-4)^2 } [/tex]
[tex]d= \sqrt{( x_{2}- x_{1})^2 + ( y_{2}- y_{1})^2 } [/tex]
[tex]d= \sqrt{(1)^2 + (-3)^2 } [/tex]
[tex]d= \sqrt{1+9 } [/tex]
[tex]d= \sqrt{10 } [/tex]
[tex]d= 3.2[/tex]
The length of segment DE is 3.2

Answer:

The length of segment DE is 3.2 (A)

Step-by-step explanation:

Carolina is mowing lawns for a summer job. For every mowing job, she charges an initial fee plus $6 for each hour of work. Her total fee for a 4-hour job, for instance, is $ 32.

Answers

Final answer:

Carolina's charges can be represented by the linear equation y = 8 + 6x, where x represents hours worked and y represents the total fee charged for the service.

Explanation:

The subject this question pertains to is Mathematics, specifically linear equations. Carolina's job can be modelled by a linear equation, where the independent variable is the number of hours worked and the dependent variable is the total fee charged.

In this case, Carolina charges an initial flat fee plus $6 per hour worked. Her total charge for a 4-hour job is $32, which means her initial fee can be deduced by subtracting four times her per-hour fee from the total fee, that is $32 - 4*$6 = $32 - $24 = $8. Therefore, the linear equation that models Carolina's job is y = 8 + 6x, where x is the number of hours worked and y is the total fee charged.

This is similar to the linear equation that represents Svetlana's tutoring job in Example 12.4, where each tutoring session earns her a one-time fee of $25 plus $15 per hour of tutoring, modeled by the equation y = 25 + 15x.

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Find an nth degree polynomial function with real coefficients satisfying the given conditions. calculator

Answers

what this question makes no sence

Final answer:

To find an nth-degree polynomial function with real coefficients given certain conditions, we can write the polynomial as a product of its linear factors using the given roots.

Explanation:

To find an nth-degree polynomial function with real coefficients, we need to use the given conditions. Let's say the conditions include the roots of the polynomial. If we have n distinct real roots, the polynomial will have n factors. So, if the roots are a, b, c, ..., we can write the polynomial as P(x) = (x - a)(x - b)(x - c)...

Example:

To find a quadratic polynomial with roots 2 and -3, we can write the polynomial as P(x) = (x - 2)(x - (-3)) = (x - 2)(x + 3) = x² + x - 6.

Similarly, for higher-degree polynomials, we use the same approach. We write the polynomial as a product of its linear factors using the given roots.

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Given f(x) = 3x+4 . What is f(8)

Answers

If x=8 {f(8)=3x+4}, the answer is 28.

Comment the correct answer.

it would be substitution then solving. step by step.

f(x)=3x+4
f(8)=3(8)+4
f(8)= 24+4
f(8)=28
hope that helps!!

find the geometric mean of the pair of numbers 36 and 4

Answers

Final answer:

The geometric mean of the pair of numbers 36 and 4 is calculated by getting the square root of the product of the two numbers, which gives us the geometric mean as 12.

Explanation:

To find the geometric mean of the pair of numbers 36 and 4, we use the formula for the geometric mean of two positive numbers, which is the square root of the product of the two numbers.

When we multiply 36 and 4 we get 144. So, the geometric mean of 36 and 4 is the square root of 144, which equals 12.

Therefore, the geometric mean of the numbers 36 and 4 is 12.

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Find a rational number that is between 9.5 and 9.7

Answers

Hello!

I think a rational number between 9.5 and 9.7 could be 9.6.

Enjoy.
~Isabella

Answer:

9.6

Step-by-step explanation:

It is a rational number as it has terminating decimal expansion

Match each correlation coefficient with the type of association it indicates between the variables x and y.

r = 0.9
r = -1.0
r = -0.6
r = 0.1

a perfect linear association in which y increases as x increases

a perfect linear association in which y decreases as x increases

a strong linear association in which y increases as x increases

a strong linear association in which y decreases as x increases

a moderate linear association in which y increases as x increases

Answers

r = 0.9
A value of 0.9 would indicate that the correlation is positive. Since it's also close to the value 1, it would also tell us that the correlation of y and x is strong. Therefore, r = 0.9 would be a strong linear association in which y increases as x increases.

r = -1.0
Since the value of r is negative, this would mean that the correlation is also negative. Furthermore, the value of r is also at the minimum point which is -1.0 thus this would tell us that the correlation is a perfect linear association in which y decreases as x increases.

r = -0.6
Likewise, this r value is also negative thus allowing us to know that y will decrease as x increases. The value of r, which is -0.6, is also close to -1.0. This allows us to tell that it is a strong relationship. Therefore, r = -0.6 is a strong linear association in which y decreases as x increases.

r = 0.1
For this correlation, the r value is positive. This would indicate that the value of y will increase as x increases. Since the r value is only 0.1, we cannot say that it is a strong relationship since it is far from the maximum value for a perfect relationship which is 1. Therefore, r = 0.1 is a moderate linear association in which y increases as x increases.

r = 0.9 (a strong linear association in which y increases as x increases)

r = -1.0 (a perfect linear association in which y decreases as x increases)

r = -0.6 (a moderate linear association in which y decreases as x increases)

r = 0.1 (no linear association or a very weak association)

The expanded form 700,000 + 10,000+9 represents the whole number. 701,309. 713,009. 710,309. 713,090.

Answers

it represents the whole number 710,009

(20 Pts) What is the value of h when the function is converted to vertex form? Note: Vertex form is p(x)=a(x−h)^2+k . p(x)=x^2−14x+29

Answers

a=1 and the x-coefficient is -14. The value of h is -(-14)/(2*1) = 7.

Analyze the graph of the quadratic function that contains the points (0,-2), (1,0) and (3,10). Create the equation of the function given the three points.

Answers

Graph the points (0,-2) , (1,0) , and (3,10). What did you notice?

Question 2: A circular picture is 8 inches in diameter. Part A What is the area of the picture in square inches? A. 4π square inches B. 8π square inches C. 16π square inches D. 32π square inches Part B A frame that is 2 inches wide surrounds the picture. What is the total area of the picture and the frame in square inches? A. 4π square inches B. 12π square inches C. 36π square inches D. 40π square inches

really important please answer correctly

Answers

Answers:
_______________________________________________________
Part A) The correct answer is: [C]: " 16 [tex] \pi [/tex] square inches " .
_______________________________________________________
Part B) The correct answer is: [C]: " 36 [tex] \pi [/tex] square inches " .
_______________________________________________________
Note:
_______________________________________________________
Part A)
_______________________________________________________
The formula for the area, "A", of a circle:

A = [tex] \pi * r^2 [/tex] ;

in which:

" A = area of the circle" ;
" r = radius of the circle" ;

Note: radius, "r" = d / 2 ; in which: "d" is the diameter of the circle ;

Given: " d = 8 in " ; " r = (8 in) / 2 = 4 in " ;
_________________________________________________
A = [tex] \pi [/tex] * (4 in)² = [tex] \pi [/tex] * 4² * (in)² ;

= [tex] \pi [/tex] * (4*4) * (in²) ;

= [tex] \pi [/tex] * 16 * in² ;
________________________________________________________
→ which is: Answer choice: [C]: " 16 [tex] \pi [/tex] square inches " .
________________________________________________________
Part B)
________________________________________________________
We now have a circular frame with a thickness of "2 inches"
surrounding the original circle. This adds "4 inches" to the diameter of that of the original circle in "Part A" —
{Note: "2 inches on one side of the circle" ; PLUS "2 inches on the other side of the circle" ; equals "4 inches".}.

The diameter, "d", of this "new circle" ;
= "8 inches (that of the previous circle)" , PLUS "4 inches" , equals "12 inches" .

→ d = 12 in. ;

The radius , "r" :

→ r = d/2 = 12 in / 2 = 6 in.

  → r = 6 in.

The area, "A" of a circle:
______________________________________________________
A = [tex] \pi [/tex] * r² ;

= [tex] \pi [/tex] * (6 in)² ;

= [tex] \pi [/tex] * (6²) * (in²) ;

= [tex] \pi [/tex] * (6*6) * (in²) ;

  = [tex] \pi [/tex] * (36) * (in²) ;
_______________________________________________________
→ which is: Answer choice: [C]:  " 36 [tex] \pi [/tex] square inches " .
_______________________________________________________

123456780-646472.657

Answers

122,810,307.343 is the answer

Which graph represents the function on the interval [−3, 3] ?

Answers

floor(0) -3 = -3 . . . . . only the left-side graphs have this point

floor(0.1) -3 = -3 . . . . only the lower-left graph has this point.

The lower-left selection is appropriate.

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