1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maksim [4K]
3 years ago
11

F(x)=-9x^2-2x and g(x)=-3x^2+6x-9, find (f-g)(x) and (f-g)(-4)

Mathematics
1 answer:
Alona [7]3 years ago
6 0

Answer:

(f - g)(x)= - 6 {x}^{2} - 8x + 9

(f - g)(-4!)= - 55

Step-by-step explanation:

f(x) =  - 9 {x}^{2}  - 2x,  \:  \: g(x) =  - 3 {x}^{2}  + 6x - 9 \\ (f - g)(x) = f(x)  - g(x) \\  = - 9 {x}^{2}  - 2x - (- 3 {x}^{2}  + 6x - 9) \\  =  - 9 {x}^{2}  - 2x  + 3 {x}^{2}   -  6x  +  9 \\    \purple{ \boxed{ \bold{(f - g)(x)= - 6 {x}^{2}  - 8x + 9}}} \\ (f - g)( - 4)= - 6 {( -4 )}^{2}  - 8( - 4) + 9 \\  =  - 6 \times 16 + 32 + 9 \\  =  - 96 + 41 \\ \red{ \boxed{ \bold{(f - g)( - 4)= - 55}}}

You might be interested in
The graph below shows the hours students spent studying and their language arts test scores.
Alexandra [31]

Answer:

correct answer is 40

Step-by-step explanation:

hope it helps:D

5 0
3 years ago
Read 2 more answers
5 - x/3 for x = -3<br><br> Evaluate the expression
Vladimir [108]
The answer is 6. When x is -3 then you divide -3 by 3 and the quotient is -1. So 5-(-1) is also equal to 5+1 which equals 6
6 0
2 years ago
What is negative 7 minus negative 2
zalisa [80]

Answer:

-5

Step-by-step explanation:

-7 - (-2)

-7 + 2

Example: If you owe someone $7, and you give them $2, how much do you still owe? You are owing him $7 so it's a negative and you give him $2 which is a negative as well since you are giving it to him. So, to answer how much do you still owe, you would add $2  to the $7 you owed, so now, you owe him $5, which is a negative since you OWE him.

Hope this helps:)

3 0
3 years ago
Please Help 7th grade math
Allisa [31]

The signs of the numbers in the problem matter because if a number is negative in the equation than you're answer could be negative.  ex. -3/9= -3   but if the negative sign wasn't there than the answer would be wrong bc the answer would be positive.



hope thats what you need hope it helps.

6 0
3 years ago
Find the area of the figure. please help my teacher is waiting.......
katrin [286]

Answer:

The area of the shape is 89m²

Step-by-step explanation:

You need to subtract the area of the empty triangle from the area of the rectangle.

The rectangle's area is 13m × 8m = 104m²

The triangle's area is (6m × (13 - 8)m) / 2 = (6 × 5) / 2 m² = 15m²

Subtract the triangle's area from the rectangle:

104m² - 15m²

= 89m²

7 0
3 years ago
Other questions:
  • The janitor at a school discovered a leak in a pipe. The janitor found that it was leaking at a rate of 11 fl oz per hour. How f
    6·1 answer
  • How many days are in four weeks
    5·2 answers
  • A community center has an l shaped swimming pool that is 10 feet deep. What is the volume of the pool?
    7·2 answers
  • Help me with this problem PLS!!!!!
    7·1 answer
  • Part 2 out of 2 What is a reasonable range for this situation? Complete the explanation. A reasonable range is (8,27, 64, 125, 2
    10·1 answer
  • The table below shows some inputs and outputs of the invertible function f ff with domain all real numbers.
    6·1 answer
  • How do I graph <br> {y=x+5 <br> {y= -x - 3
    9·1 answer
  • PLEASE HELP ME FIRST ANSWER GETS BRAINLIST
    7·1 answer
  • Help me with this question please
    8·1 answer
  • Pleeeaaseee helllppppp!!!!​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!