Find the derivative of y = 2(x^2) - x + 4 at x = 2​

Answer:

x + y = 4 or y = -x + 4

Step-by-step explanation:

0 = -1[4] + b

4 = b

y = -x + 4

If you want it in Standard Form:

y = -x + 4

+x +x

_________

x + y = 4 >> Line in Standard Form

* Since the rate of change [slope] is -1 and that parallel lines have SIMILAR SLOPES, -1 remains the same.

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Answer:

949 centimeters

Step-by-step explanation:

100 centimeters = 1 meter

We have to multiply by 100 to find the values

9.49 meters = 9.49 * 100 = 949 m

Answer:

949 cm.

Step-by-step explanation:

1 m. = 100 cm.

100 × 9,49 = 949

⤻⤻

According to the Power of 10 rule, whenever you divide by 10 [⅒], you move the decimal mark to the left each time, and of course, whenever you multiply by 10, you move the decimal mark to the right each time. In this case, since you are multiplying by 100, you move the decimal mark twice to the right to get 949.

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Answer:

C

Step-by-step explanation:

143.75+ tax(7.1875)= 150.9375 <-- Tennis Ball Containers

30+ tax(1.5)= 31.5 <-- Packs of Grip Tape

150.9375+31.5= 182.4375

This can be rounded up to 182.44 (which is your final answer)

Answer:

mean: 10

meidian; 9.5

Step-by-step explanation:

rasons

The mean of the movies that the students saw is, 14.67

The median of the movies that the students saw is, 15.5

The process of combining two or more numbers is called the Addition. The 4 main properties of addition are commutative, associative, distributive, and additive identity.

Given that;

Each of 6 students reported the number of movies they saw in the past year. This is what they reported:

⇒ 16, 9, 14, 16, 18, 15

Now, The mean of the movies that the students saw is,

⇒ 16 + 9 + 14 + 16 + 18 + 15 / 6

⇒ 88 / 6

⇒ 14.67

And, We arrange the given data in ascending order,

⇒ 9, 14, 15, 16, 16, 18

Hence, The median of the movies that the students saw is,

⇒ (15 + 16) / 2

⇒ 31 / 2

⇒ 15.5

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Answer:

Step-by-step explanation:

Writing a system of equations is really just writing an equation for each part of the problem.  The parts here being the calories, and number of items.  It's not asking to solve it, so I will not unless you do want me to.

First variables, let's keep it simple.  O will be onion rings and M will be mozzarella sticks.

Now, I mentioned the two parts are the calories and number of items so we'll take it one at a time.  First calories.  

The total calories will equal 800, so we know the answer to the equation.  Now, how would we relate the variables?  if you had two of each item what would the total calories be?  it may be easy to figure out,  but for our purposes we want to think of it as multiplying the calories of each by the number of each item, or in other words 40*O+60*M, where O and M equal 2.  So for the general case we use the same thing, but we know what we want So our first equation is 40*O + 60*M = 800

The second is a bit simpler.  It just wants to know the total amount of things ordered.  So we are just adding O and M together.  So this gets us O + M = 14, since there are 14 things together.  Let me know if there's still something you don't understand though.  

The system of equations is: [tex]\( x + y = 14 \)[/tex] and [tex]\( 40x + 60y = 800 \)[/tex], where \( x \) represents the number of onion rings in the combination meal and \( y \) represents the number of mozzarella sticks in the combination meal.

Let's define:
- \( x \) as the number of onion rings in the combination meal.
- \( y \) as the number of mozzarella sticks in the combination meal.

The system of equations would be:

1. [tex]\( x + y = 14 \)[/tex] (since the combination meal has a total of 14 onion rings and mozzarella sticks altogether)
2. [tex]\( 40x + 60y = 800 \)[/tex] (since each onion ring has 40 calories and each mozzarella stick has 60 calories, and together they contain 800 calories)

Answer:

[tex]\frac{19}{8}[/tex]

Step-by-step explanation:

As per definition of commutative property, the final output of addition remains same regardless to what order the number are added in i.e.

[tex]a + b + c = b + c + a = c + a + b[/tex]

∴[tex]\frac{1}{2}  + \frac{3}{8} + \frac{3}{2} = \frac{4 + 3 + 12}{8} = \frac{19}{8}[/tex]

Answer:

4/9 * -2/3= -8/27 is the solution

Answer:

The GCF for 15az and 25az is marked below.

15az = 3*5*a*z

25ab - 5*5*a*b

GCF = 5a

Step-by-step explanation:

Answers above! Hoped this helped :)

Answer:

GCF=5az.

Step-by-step explanation:

First, find a number that is the largest to be multiplied by something else to get both of these numbers. 5 is the correct number. az is also applicable, so therefore 5az is correct. you can multiply 5az by 3 to get 15az or by 5 to get 25az

Answer:

See explanation

Step-by-step explanation:

A dog owner records the weight of her dog. She finds that from the age of 20 weeks to the age of 48 weeks, the dog’s weight can be modelled by the equation

[tex]w = 0.92t-0.15\ \ \ (20\le t\le 48)[/tex]

where

w = weight

t = number of week from 20 weeks to 48 weeks

If we want to extend this model to the dog's weight at birth, then find the dog's weigth when it was born.

At t = 0,

[tex]w=0.92\cdot 0-0.15\\ \\w=-0.15\ kg[/tex]

We get the dog's weight -0.15 kilograms at the day the dog was born. But this is impossible, because the dog's weight cannot be negative.

The model cannot predict the dog's weight at birth due to negative values and unrealistic linear growth for early development.

The equation w = 0.92t - 0.15 describes the weight of the dog as a function of time t in weeks, specifically for the age range of 20 weeks to 48 weeks. When t is set to 20 weeks, we can calculate the weight:

w = 0.92(20) - 0.15

= 18.4 - 0.15

= 18.25 kg.

However, if we try to extend this model to predict the dog's weight at birth (t = 0 weeks), we would get:

w = 0.92(0) - 0.15

= -0.15 kg.

A negative weight is nonsensical in this context, as animals cannot have negative weight. Moreover, the biological growth of a dog does not follow a linear pattern from birth to maturity. The model is designed to represent a specific growth phase after the initial rapid growth and development that occurs in the early weeks of life.

Growth models typically start with an exponential phase during early life, which cannot be accurately captured by a linear equation.

Answer:

AB = 2[tex]\sqrt{2}[/tex]

Step-by-step explanation:

Calculate the length using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = A(- 3, - 4) and (x₂, y₂ ) = B(- 1, - 6)

AB = [tex]\sqrt{(-1+3)^2+(-6+4)^2}[/tex]

     = [tex]\sqrt{2^2+(-2)^2}[/tex]

     = [tex]\sqrt{4+4}[/tex]

     = [tex]\sqrt{8}[/tex] = 2[tex]\sqrt{2}[/tex] ≈ 2.83 ( to 2 dec. places )

Answer:

Step-by-step explanation:

AB= √((-6+4)²+(-1+3)²)² = √(4+4)= √8 =2√2

Answer:

the answer is 113.1yd²

Step-by-step explanation:

Answer is provided in the image attached.

Answer:

The system has one solution: (4,1)

Step-by-step explanation:

We have the equations:

1) Y = -X + 5

2) Y = X - 3

Replace the "value" of Y of the 2nd eq into the 1st eq:

(X - 3) = -X + 5

Now let's leave X alone in one side of the iquality:

X + X = 5 + 3

2X = 8

X = 8/2

X = 4

Now, having the value of X, replace it into any of the aquations, let's use the 2nd:

Y = X - 3

Y = 4 -3

Y = 1

The ONE solution of this equations system is (4,1), which is the point in the xy plane where the two lines intersect.

The following equation has:

          Unique solution (one solution i.e. (4,1) )

The system of equation is given by:

                 y= -x + 5-----------(1)

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

Now, on substituting the value of y from equation (1) into equation (2) we have:

[tex]-x+5=x-3[/tex]

On adding x on both the sides of the equation we have:

[tex]5=x+x-3\\\\5=2x-3[/tex]

on adding 3 on both the sides of the equation we have:

[tex]2x=5+3\\\\2x=8\\\\x=\dfrac{8}{2}\\\\x=4[/tex]

Now, on putting the value of x into equation (2) we have:

[tex]y=4-3\\\\y=1[/tex]

Hence, the solution is unique (one solution )

        Also, the point of intersection of the graph of two equations is solution to the system of equations.

Final answer:

By rearranging the formula for the volume of a box to solve for width and substituting the given values, the width of the box is calculated to be 5 inches.

Explanation:

The student asks what the width of the box is, given that the volume of the box is 400 cubic inches (in³), the height is 10 inches (in), and the length is 8 inches (in). The formula to find the volume of a rectangular box is V = l × w × h, where V is the volume, l is the length, w is the width, and h is the height. Since we already have the volume, length, and height, we can rearrange the formula to solve for the width w as follows: w = V / (l × h). Substituting the given values, we get w = 400 in³ / (8 in × 10 in), which simplifies to w = 400 in³ / 80 in². After dividing 400 by 80, the result is w = 5 in. Therefore, the width of the box is 5 inches.

Answer:

Step-by-step explanation: 18x2+4=30

Answer:

amy is 11.

Step-by-step explanation:

in the problem it explains that brandy is 4 years younger than twice amys age. if we say that amy is 11 then we can verify the answer because 11*2 is 22-4 is 18.

hope this helps- cam:)

Step-by-step explanation:

Look at the picture

a. 5k → 5

b. t = 1t → 1

c. -9t → -9

d. -j = -1j → -1

Check the picture below.

notice, the car starts at 0 miles and 0 minutes, since it was at rest, wasn't moving, and off it went and in 10 minutes it has covered 55 miles.

Answer:

54

Step-by-step explanation:

First you would distribute 6 into 4 and 5. 6 times 5 is 30, and 4 times 6 is 24. the equation is now (24 + 30), which equals 54.

[tex]\bf \cfrac{36}{80}\implies \cfrac{~~\begin{matrix} 2\cdot 2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~\cdot 3\cdot 3}{2\cdot 2\cdot ~~\begin{matrix} 2\cdot 2 \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~\cdot 5}\implies \cfrac{9}{20}[/tex]

Answer:

9/20

Step-by-step explanation:

find a common factor and divide both the numerator and the denominator by that factor until there's no way to keep simplifying anymore. or use a calculator. but don't do that. you won't learn that way. im a bad teacher sorry.

Answer:

162 RPM

Step-by-step explanation:

Start by multiplying 9⁄10 by the Multiplicative Inverse of ⅓, which is 3:

9⁄10 ÷ ⅓ → 9⁄10 × 3 = 2 7⁄10

After this, multiply the result by sixty seconds, since there are sixty seconds in one minute:

60 × 2 7⁄10 = 162

So, it will make 162 RPM.

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Good evening ,

___________________

Step-by-step explanation:

AO=[tex]\sqrt{p^{2}+q^{2} }[/tex]

AB=[tex]\sqrt{( p+2q-p)^{2} + (q+2p-q)^{2}[/tex]

=[tex]\sqrt{(2q)^{2}+(2p)^{2} }[/tex]

=[tex]\sqrt{4(q^{2}+p^{2} ) }[/tex]

=[tex]2\sqrt{p^{2}+q^{2} }[/tex]

=2AO.

:)

Your Question: How to calculate ratio.

The Answer/Explanation: To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero). For example, if we divide both terms in the ratio 3:6 by the number three, then we get the equal ratio, 1:2.

To calculate the ratio, the width will be divided by the GCD and the height will be divided by the GCD. A colon will be placed between those two numbers. The result is 4:3 -- the ratio for those screen dimensions.

Remember to check study guides, lessons and notes to rely on; working hard is the way to success. Good Luck!

To calculate a ratio, you compare two quantities and express their relationship as a fraction, a colon-separated pair, or a "to" statement. You usually divide the larger number by the smaller and simplify to whole numbers to find the smallest whole-number ratio.

To calculate a ratio, you compare two quantities to each other. Ratios can be represented in a few different ways, such as fractions, with a colon, or with the word "to". For example, a ratio might be 2/3, 2:3 or "2 to 3". If you're dealing with a scenario where you are given two different molar amounts, you would follow these steps:

For example, if you're looking at a chemical equation and need to determine the mole ratio, divide all numbers by the smallest value presented. So, if the molar amounts are 5.5, 1, and 1.2, dividing each by the smallest amount (1 in this case) gives you the mole ratio of 5.5:1:1.2. Simplified, it would become 55:10:12 as a ratio of whole numbers.

Answer:

t = 8 t = 0

Step-by-step explanation:

The factored form is t(t + 8).

Certainly! Let's factor the given polynomial t^2 + 8t step by step.

So, the factored form of t^2 + 8t is t(t + 8).

Answer:

x = 4.75 or 19/4 or 4 and 3/4

Step-by-step explanation:

10 - 4x = -9

-10         -10

-4x = -19

----    -----

-4     -4

x = 4.75 or 19/4 or 4 and 3/4

Correct answer: x= - 3/2

Answer:

c

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Answer:

n =  1.33 repeating

Step-by-step explanation:

first you distribute the -2 by everything in the parenthesis so then you get -12 + 1- = 26 the you subtract 10 from each side which leaves you with -12 = 16 then you devide -12 by both sides and you get the decimal 1.33 repeating.

Answer:

15x+100(3) ≥ $1500

x ≥ 80 pages

Step-by-step explanation:

Let x represent the number of  pages.

Manuel receives $15 per page = 15x

Plus $100 per month. Manuel would like to work for 3 months = 15x+100(3)

He wants to make at least $1500 during the summer

Thus the inequality we get is:

15x+100(3) ≥ $1500

Now solve the equation to find minimum number of pages:

15x+300 ≥ $1500

Combine the like terms:

15x ≥ 1500-300

15x ≥ $1200

Divide both sides by 15

15x ≥ $1200/15

x ≥  80 pages

Answer:

x = 5, -5

Step-by-step explanation:

Find the roots of [tex]x^{2} -25=0[/tex] by solving for x.

Add 25 to both sides

[tex]x^{2} =25[/tex]

Square root both sides

[tex]x = 5[/tex]

[tex]x=-5[/tex]

The solution to the quadratic equation x² - 25 = 0 is 5, -5 after using the identity a² - b² = (a + b)(a - b).

Any equation of the form [tex]\rm ax^2+bx+c=0[/tex]  where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

As we know, the formula for the roots of the quadratic equation is given by:

[tex]\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}[/tex]

It is given that:

The quadratic equation:

x² - 25 = 0

As we know,

a² - b² = (a + b)(a - b)

Using the above identity:

x² - 5² = 0

(x + 5)(x -  5) = 0

x + 5 = 0  

x = -5

Or

x - 5 = 0

x = 5

We can also find the solution to the equation x² - 25 = 0 using the quadratic formula.

Thus, the solution to the quadratic equation x² - 25 = 0 is 5, -5 after using the identity a² - b² = (a + b)(a - b).

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