Mathematics High School

Help!
Let f(x)= 7x² + 4x and g(x) = -9x -- 2. What function represents a new function, h(x), for which h(x)=(f+g)(x)
a. h(x)= -2x² + 2x
b. h(x) = 7x2 + 5x - 2
c. h(r)= -2x² + 4x - 2
d. h(x) = 7x- 5x - 2

Answers

Answer 1

Answer:

Option D

Step-by-step explanation:

h(x) = (f+g)(x) = f(x) + g(x)

= 7x² + 4x +(-9x-2)

= 7x² -5x -2

Related Questions

How do you solve this equation? x/2 - x = x/4 + 6

Answers

Answer:

x= - 8

Step-by-step explanation:

multiply both sides by 4 to get rid of the fractions. you should then get:

2x-4x=x+24

then get all the x terms to one side by subtracting by x on each side:

2x-4x-x=24

then simplify:

-3x=24

divide by -3 on each side:

x= - 8

the sum of two nubers is 20. the difference between three times the first number and twice the sencond is 40. find the two numbers.​

Answers

16 and 4 are the two numbers.

What is (5+3i) - (2-8i) give your answer in standard form

Answers

Answer:

5+3i-2+8i

(5-2)+(3+8)i

3+11i

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Answers

Answer:

point a

Step-by-step explanation:

Jocelyn bought 18 chicken wings for $9. What was the cost of the wings in wings per
dollar?

Answers

18 wings = 9$
divide by eighteen
1 wing = 1/2 $

1/2 $ = 0.5 $

answer is 0.5 $ or 50 c per wing

Answer:

Step-by-step explanation: 18 wings = 9$

divide by eighteen

1 wing = 1/2 $

1/2 $ = 0.5 $

answer is 0.5 $ or 50 c per wing



Nicolas is setting up water stations for a 10-mile run. He already has the first one set up 8 miles from the starting line. He needs to set up two more that are 1.5 miles on either side of the first water station. Where will he put the two additional water stations?

A number line divided into increments of 1 and labeled 0 through 10. The number 8 is labeled with Nicolas.

The absolute value equation that models this situation is |x –
|=

.

The two additional water stations will be
and

miles from the starting line.

Answers

Answer:

Step-by-step explanation:

The two additional water stations will be 6.5 miles  and 9.5  miles away from the starting line.

Given Nicolas is setting up 3 water stations for a 10-mile run.

He already has the first one set up 8 miles from the starting line. He wants to set up two more that are 1.5 miles on both side of the first water station.

We have to calculate the distance of 2 other water station from starting point.

Now A number line divided into increments of 1 and labeled 0 through 10. The number 8 is labeled with Nicolas.

The absolute value equation that models this situation is |x –8 |=1.5

The two additional water stations will be (8-1.5) miles or 6.5 miles and other will be (8+1.5) or 9.5 miles away from the starting line.

The two additional water stations will be 6.5 miles  and 9.5  miles away from the starting line.

For more details on number line follow the link:

https://brainly.com/question/557284

Alex eats 5/6 of a pizza. His father eats 1 1/5 times as much pizza as Alex. How much of the pizza does Alex's father eat? ASAP!!!!!!!!!!!

Answers

Answer:

1 pizza

Step-by-step explanation:

(5/6) × (1 1/5) = 1

Nora loves to play the Bridge Builders video game, where players gain and lose points by
building safe and unsafe bridges. In Level 1, Nora earned 16 points because her bridge
passed inspection. Then, she lost 25 points because part of her bridge collapsed!

Answers

Answer: Its -9

Step-by-step explanation:

because 16 - 25 = -9

Jenny is making tie dyed shirts for her class with her school colors, blue and yellow she used a total of 8 ounces of fabric paint the amount of blue paint is 3 times the amount of yellow make a diagram to show the ratio of blue to yellow paint

Answers

Answer:

The ratio of blue paint to yellow paint is 3:1

Step-by-step explanation:

Let

x -----> the amount of blue paint in ounces

y ----> the amount of yellow paint in ounces

we know that

x+y=8 -----> equation A

x=3y -----> equation B

Solve the system by substitution

Substitute equation B in equation A

3y + y = 8

4y = 8

y = 2

Find the value of x

x = 3(2) = 6

therefore

The amount of blue paint is 6 ounces and the amount of yellow paint is 2 ounces

Find the ratio

To find out the ratio of blue paint to yellow paint, divide the amount of blue paint by the amount of yellow paint

x/y = 6/2 = 3/1

That means -----> Of every 4 parts of paint, three parts are blue and one part is yellow.

Susan buys a new computer 1200 dollars.Sales tax is 11%. How much does Susan actually have to pay?

Answers

Start by finding 11% of 1,200. To do so, multiply .11 by 1,200 to get 132. Add 132 to 1,200 to get 1,332.

In short, Susan has to pay *$1,332*

The amount that Susan actually have to pay should be considered as the $1,332.

Calculation of the amount:

Since the purchase price of the computer is $1,200

And, the sales tax rate is 11%

So here the total amount be like

= $1,200 + 11% of $1,200

= $1,200 + $132

= $1,332

hence, The amount that Susan actually have to pay should be considered as the $1,332.

Learn more about sales tax here: https://brainly.com/question/24422578

a sphere of volume 4851 cm cube then what is the diameter?​

Answers

Answer:

21 cm

Step-by-step explanation:

V = (4/3)(pi)r^3

(4/3)(3.14)(r^3) = 4851 cm^3

r^3 = 1158.1 cm^3

r = 10.5 cm

d = 2r = 2(10.5 cm) = 21 cm

The growth of 7 different plants was recorded in centimeters. What type of graph would be best for comparing the growth of each plant

Answers

Answer:

Bar graph, would probably be your best bet. Hope this helps!

A ball falls from a window. Its height, as a function of time, is modeled by
y=-4.9x^2 + 12
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A. The function is nonlinear
B. The function is linear at some points and nonlinear at other points.
C. Not enough information is given to decide,
D. The function is linear

Answers

Answer: A

Step-by-step explanation:

Harriet’s goal is to weigh no more than 140 pounds. If x represents weight, write and inequality that describes her goal weight.

Answers

Answer:

x≤140

Step-by-step explanation:

The total cost for a bucket of popcorn and 4 movie tickets is $56. The total cost for the same size bucket of popcorn and 6 movie tickets is $80. The cost of a bucket of popcorn is $8. Which equation represents the relationship between y, the total cost of the popcorn and movie tickets, and x, the number of movie tickets that are purchased?

y = 12x + 8
y = 12x − 8
y = 14x + 8
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Answers

Answer:

y = 12x + 8

Step-by-step explanation:

56 - 8 = 48

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Answer:

A is correct.

Step-by-step explanation:

Reasoning: I can confirm the answer above is correct. I'm not gonna lie saying something like "cuz I am right" so yeah. <3

If an angle is half of its complement, then the measure of the LARGER angle will be

Answers

Answer:

60°

Step-by-step explanation:

Complementary angles sum 90°

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b = a/2             Eq. 2

Replacing Eq. 2 in the Eq. 1

a + a/2 = 90

2a/2 + a/2 = 90

3a/2 = 90

a = 90*2/3

a = 60

from the Eq. 2

b = 60/2

b = 30

Check:

from the Eq. 1

60 + 30 = 90

Answer:

60>30

Then

The larger angle is:

60°

Help with this one pleaseee

Answers

Answer:

??

Step-by-step explanation:

Tan= opposite/adjacent
So the Tanr = 35/12.

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Answers

Answer:

the answer is y=1/4n-3

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Answers

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Answers

Answer:

Terminating decimals don't have a continuation of  the same digits after the decimal point. Recurring decimals have one or more repeating numbers or sequences of numbers after the decimal point, which continue's forever.

Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

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Answers

Answer:

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Step-by-step explanation:

1 + 6 = 7

Answer:

1+6=7

Step-by-step explanation:

Evaluate the numerical expression:
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Answers

Answer:

1/15

Step-by-step explanation:

Answer:

1/15

Step-by-step explanation:

Lets simplify, since we need to account for the double negative:

-1/3 + 2/5 = 1/15

please help its ok if you dont know this

Answers

Answer:

11/8

Step-by-step explanation:

Answer:

11/8

Step-by-step explanation:

Find the midpoint of the line segment joining the points (-1,-1) and (-3,12)
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Answers

Answer:

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Step-by-step explanation:

the answer is (-2, 11/2)

hurry i only got 15 min

Answers

1st option
-2 is -1 + -1
3= +1+1+1

Answer:

Its the A

first

Step-by-step explanation:

3 is positive ( + )

2 is Negative ( - )

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Answers

Answer:

$40.80 is the answer

What is the slope.of (2,4) and (5,9)

Answers

The slope of (2,4) (5,9) is 1.66667

how many solutions does a dependent system of equations have?

Answers

A dependent system of equations has infinite simultaneous solutions

What corresponds to the graph below?

Answers

Answer:

Step-by-step explanation:

Can you redo the picture

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