3 years ago

F(x) =x^2+6x and g(x)=7-x find (f-g)(x) and (f-g)(9)

1 answer:

8 0

(f-g)(x) = x²+6x - (7-x)
(f-g)(x) = x² + 6x - 7 + x
(f-g)(x) = x² + 7x - 7

(f-g)(9) = 9² + 7*9 - 7
(f-g)(9) = 81 + 63 - 7
(f-g)(9) = 137

You might be interested in

What is the product of (x − 3) and (x + 7)?

NeX [460]

Answer:

The product of (x-3) and (x+7) is x² + 4x - 21

Step-by-step explanation:

The product of (x-3) and (x+7) is x² + 4x - 21

The product of (x - 3) and (x + 7) can be found as follows:

(x - 3)(x + 7)

open the bracket by multiplying

Therefore,

x(x) +x(7) - 3(x) - 3(7)

x² + 7x - 3x - 21

combine like terms

x² + 4x - 21

3 0

2 years ago

Read 2 more answers

Noelle used 17 lemons to make lemonade. This was 85% of all the lemons

LuckyWell [14K]

Answer:

20 lemons

Step-by-step explanation:

Let the number of lemons = 'x'

85% of x = 17

$\frac{85}{100}*x = 17\\\\x = \frac{17*100}{85}\\x = 20$

6 0

3 years ago

Read 2 more answers

A bean plant grows at a constant rate for month. After 10 days, the plant is

IrinaVladis [17]

Answer:

D or y-25=2(x-10)

Step-by-step explanation:

If you graph all or the answers the only one that hits both points is D.

7 0

3 years ago

Math help mee plzzzzzz THERE IS A ATTACHMENT SO WAIT AT LEAST 30 SECONDS PLZZZZ

seraphim [82]

75 mph because you divide 337.5 by 4.5

7 0

3 years ago

Read 2 more answers

Two questions, twenty per question!

blagie [28]

1: C

2: B

I think, sorry if it is incorrect. :(

6 0

4 years ago