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3 years ago

F(x) = 3x-7 and g(x) = -2x-6. Find (f o g)(4)

Mathematics

1 answer:

USPshnik [31]3 years ago

4 0

(f o g)(4) = f(g(4))
so
g(4) = -2(4) -6 = -14
f(g(4)) = 3(-14) -7 = -49

answer
 (f o g)(4) = -49

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When a math problem say twice as the amount what operation is that

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multiplacation

Step-by-step explanation:

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3 years ago

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dmitriy555 [2]

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3 years ago

Find the value of c so that (x-5) is a factor of the polynomial p(x)

liubo4ka [24]

I think the question is

Find the value of c so that (x-5) is a factor of the polynomial

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The other factor is going to be some quadratic. We can say a few things about its coefficients but let's start by saying in general it's

$q(x)= ax^2 + bx + k$

$p(x) = (x-5)q(x)$

$x^3 + 2x^2 + cx + 10 = (x-5)(ax^2 + bx+k) = ax^3 + (b-5a)x^2 + (k-5b)x - 5k$

Equating respective coefficients,

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so we get

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$c = k - 5b = 2 - 5(7)= -37$

Answer: -37

Check:

$(x^2 + 7x - 2)(x - 5) = x^3 + 2 x^2 - 37 x + 10\quad\checkmark$

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3 years ago

Side AB is 18, Side AC is 9, Side BC is 5. Find the SinA. Give your answer in fraction and decimal form.

Sladkaya [172]

Input data

In any right triangle, the sine of an angle x is the length of the opposite side (O) divided by the length of the hypotenuse (H). In a formula, it is written as 'sin' without the 'e':

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1 year ago

15-2x=-7x what does x equal

Degger [83]

Answer:

x = -3

Step-by-step explanation:

15 - 2x = -7x

add 2x

15 = -5x

divide by -5

-3 = x

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3 years ago