3 years ago

2) James spent $65 for n books. Write an expression that can be used to find the cost of

Mathematics

1 answer:

Zina [86]3 years ago

7 0

Answer:

65 ÷ n

Step-by-step explanation:

If you already knew the cost of one book, you would do:

cost of 1 book x n = 65

However, you do not know the cost, so you have to do the opposite of multiplying the cost, which is dividing.

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Cordell Johnson purchased a snow blower for $237.00 and two bags of rock salt for

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a.240.15

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a.240.15

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2 years ago

A plumber charges $45 for a service call to come to your house and $18 an hour while he is working. Write a function that shows

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Jonah buys a television that costs $445. Sales tax in his state is 7 percent. Which of the following expressions represent the a

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2. Tax = 445(0.07)

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4 years ago

In triangle $abc$, the measure of $\angle a$ is $86$ degrees. the measure of $\angle b$ is $22$ degrees more than three times th

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Given:
m∠A = 86°

Because the measure of angle B is 22 degrees more than three times the measure of angle C, therefore
m∠B = 3*m∠C + 22 (1)

The sum of the angles should be 180°, therefore
m∠A + m∠B + m∠C = 180 (2)

Note that m∠A = 86°
Substitute equation (1) for m∠B in equation (2) to obtain.
86 + (3*m∠C + 22) + m∠C = 180
86 + 3*m∠C + 22 + m∠C = 180
4*m∠C = 180 - 86 - 22 = 72
m∠C = 72/4 = 18°

Answer: m∠C = 18°

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3 years ago