3 years ago

I need help with number 17

1 answer:

7 0

To find f(x)-g(x), find (3x-21)-(3x+21)

(3x-21)-(3x+21)

Flip the signs in the second binomial
(3x-21)-3x-21

Combine like terms
3x-3x-21-21
-21-21
-42

The final answer is -42. X is irrelevant because whatever you plug in will always equal -42.

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A circle with circumference 20 has an arc at 72 central angle. what is the length of the arc

Vsevolod [243]

Answer:

4 units

Step-by-step explanation:

$\because \: l = \frac{ \theta}{360 \degree} \times c \\ \\ \therefore \: l = \frac{72 \degree}{360 \degree} \times 20 \\ \\ \therefore \: l = \frac{72 \degree}{18\degree} \\ \\ \therefore \: l = 4 \: units$

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3 years ago

Mai put $4,250 in the bank for a rate of 4% simple interest per year. After

Nataly [62]

Answer:

4760

Step-by-step explanation:

Simple interest formula:

PV(1+it)

4250(1+.04*3)=4760

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3 years ago

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marishachu [46]

Answer:

Mean:79

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3 years ago

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Marizza181 [45]

Answer:

A. The temperature outisde and the number of people swimming at the beach.

Step-by-step explanation:

As the temperature decreases the number of people swimming will also decrease. This will create a negative correlation between the two factors.

4 0

2 years ago

Solve for n 25/n = 5/8

Sveta_85 [38]

Answer:

n=40

Step-by-step explanation:

25/n=5/8

25/5=5

n/5=8

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