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Black_prince [1.1K]
4 years ago
7

If f(x) = x2 + x and g(x) = x − 3, find f(g(7)). A.20 B.28 C.32 D.53

Mathematics
1 answer:
worty [1.4K]4 years ago
3 0
Here's how I answer these kind of questions.

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Step-by-step explanation:

Im pretty sure its A

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3 years ago
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A _____ is accepted to be true without proof, while a _____ is an assertion that can be proven using the rules of logic.
deff fn [24]

Answer:

A <u>postulate</u> is accepted to be true without proof, while a <u>theorem </u>is an assertion that can be proven using the rules of logic.

Explanation:

In mathematics, a postulate is a statement that is considered to be true without looking for any proof of that statement. Other hypotheses or statements can be tested using a postulate as a standard. A postulate is not only significant in mathematics but also plays an important role in understanding the concept of physics.

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5 0
3 years ago
PLEASE HELP PLS!!!!!
Alisiya [41]
Subtitute f(x) with 2x + 1, and subtitute g(x) = -x + 4
f(x) = g(x)
2x + 1 = -x + 4

Then solve the equation above to find the value of x
Move the coefficient-variable x to the left side, and move the constants to the right side. When they are moved, addition becomes substraction, substraction becomes addition
2x + 1 = -x + 4
2x + x = 4 - 1

Simplify the equation
2x + x = 4 - 1
3x = 3

Move 3 on the left side to the right side, it becomes denominator
3x = 3
  x = 3/3
  x = 1

The solution to the equation is
x = 1
5 0
4 years ago
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1. A computer technician charges a flat fee of $35 to repair a computer in addition to an hourly rate of $22.50. The technician
Misha Larkins [42]

1. Multiply the hourly rate by the number of hours worked ( 22.5h) add that to the flat fee ( 22.5h +35) and that needs to be equal to or greater than what he expects to make:

A. 22.5h + 35 ≥ 215 , with a solution of h ≥ 8

2. Same method as number 1:

C. $3 + 1.80m ≤ $25

3. Each fraction would need 1 negative sign and have the same numerator and denominator, so the answer would be B.6/-7

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3 years ago
The perimeter of the rectangle is 28 units.
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Answer:

7 units

Step-by-step explanation:

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3 years ago
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