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3 years ago

What is three more than the product of a number and 7 equals 8 . use the variable x for the unknown number?

Mathematics

1 answer:

Anastaziya [24]3 years ago

7 0

(7x) + 3 = 8
subtract both sides by 3.

7x = 5
divide both sides by 7 to isolate the variable, x.

x = 5/7

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3 years ago

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Step-by-step explanation:

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3 years ago

rice that costs $480 which is for 8 members is used 20 days. What is the cost of rice which is required for 12 members for 15 da

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3 years ago

Let f(x) = -2x - 7 and g(x) = -4x + 3. Find (f o g)(-5)

musickatia [10]

The answer is: [A]: " -53 " .
_______________________________________________________
Explanation:
_______________________________________________________
Given:

" Let f(x) = -2x − 7 and g(x) = -4x + 3. Find (f o g)(-5) " ;
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First, find g(-5) . g(x) = -4x + 3.

g(-5) = -4*(-5) + 3 = 20 + 3 = 23 ;
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Now find f (g(-5) to get the answer; that is f(23);
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f(23) = (-2*23) − 7 = -46 − 7 = -53 ; which is "Answer choice: [A]" .
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Answer:

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