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3 years ago

Show the work and multiple choices.

Mathematics

1 answer:

grigory [225]3 years ago

5 0

The answer might be B

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For f(x) = 3x - 12 and g(x) = 2x^2 + 7, find f(g(-5)).

Soloha48 [4]

Answer:

159

Step-by-step explanation:

To evaluate f(g(- 5)), first evaluate g(- 5) then substitute this value into f(x)

g(- 5) = 2(- 5)² + 7 = 50 + 7 = 57

f(57) = (3 × 57) - 12 = 171 - 12 = 159

6 0

3 years ago

If fx) = 4х- 3 and g(x) = x+ 4, find (f-g)(x). А. 7- 3x В. 5x-7 C. 3x-7 D. 5x -1

kiruha [24]

Answer:

Step-by-step explanation:

(4x-3)-(x+4)

distribute the negative

(4x-3)+(-x-4)

add them together

3x-7

I hope this helps

4 0

3 years ago

Fill in the blanks to make an arithmetic sequence

Arlecino [84]

-----------------------------------------
General Equation:
-----------------------------------------
$T_n = a_1 + d(n - 1)$

-----------------------------------------
Find d :
-----------------------------------------
$a_1 = 11, T_7 = 79,$
$T_7 = 11 + d(7 - 1)$
$-79 = 11 + 6d$
$6d = -79 - 11$
$6d = -90$
$d = -15$

-----------------------------------------
Find general equation :
-----------------------------------------
$T_n = 11 + (-15)(n - 1)$
$T_n = 11 -15n + 15$
$T_n = 26 -15n$

-----------------------------------------
Find the sequence :
-----------------------------------------
$T_1 = 26 - 15(1) = 11$
$T_2 = 26 - 15(2) = -4$
$T_3 = 26 - 15(3) = -19$
$T_4 = 26 - 15(4) = -34$
$T_5 = 26 - 15(5) = -49$
$T_6 = 26 - 15(6) = -64$
$T_7 = 26 - 15(7) = -79$

---------------------------------------------------------
Answer: 11, -4, -19, -34, -49, -64, -79
---------------------------------------------------------

4 0

3 years ago

If there is a 24 foot board cut into 2 pieces and one piece is 4 times longer than the other what are the lengths of each piece

erik [133]

First set up an equation as your approach. I will use the equation x+4x=24 because that way you are saying that something pluse itself times 4 equals 24 which is what you want.

simplify the equation

5x=24

x=24/5

So you know onw piece will be 24/5 of a foot and the ither qould be that times 4 so 96/24 of a foot. In decimals it would be 4.8 and 19.2

3 0

3 years ago

PLSS Someone plss help plss helppp plllsss Will mark brainliest!!!

Umnica [9.8K]

4,3 hope it help the top is 4 and the bottom is 3

3 0

2 years ago

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