2 years ago

Could really use some help

Mathematics

1 answer:

MrRissso [65]2 years ago

5 0

Answer:
X= 114
I don’t know what y is labeling so I won’t be able to help there sorry

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

Alona [7]

Answer:

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

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

Step-by-step explanation:

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

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2 years ago

Chris found some colorful leaves under one tree. Under another tree, he

Lynna [10]

Answer:

x+y-3+6

x+y+3

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3 years ago

A rectangular flower garden in samanthas backyard has 180 ft around its edge. the width of the garden is 40 ft.what is the lengt

sasho [114]

Given is,
the total edges= 180 ft
width= 40 ft
so, 40 ft minus from 180 fts
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180ft -40 ft= length
140ft = length

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3 years ago

Kimtoya has 2/3 of a loaf of banana bread.she wants to cut it into slices that each represent 1/12 of the entire loaf. How many

padilas [110]

Answer:

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Step-by-step explanation:

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2 years ago

3 x + y = − 14 4 x + 4 y = − 16

aev [14]

Answer:

y=1

x=-5

Step-by-step explanation:

3x+y=-14

4x+4y=-16

y=-3x-14

4x+4y=-16

y=-3x-14

4(-3x-14)+4x=-16

y=-3x-14

-8x-56=-16

y=-3x-14

-8x=40

y=-3x-14

x=-5

y=1

x=-5

4 0

3 years ago

Could really use some help ​

Could really use some help