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nasty-shy [4]
3 years ago
5

Oceanside Bike Rental Shop charges 13 dollars plus 9 dollars an

Mathematics
2 answers:
azamat3 years ago
8 0

Answer:he paid for 6 hours to have the bike checked out.

Step-by-step explanation:

Oceanside Bike Rental Shop charges 13 dollars plus 9 dollars an

hour for renting a bike. Let x represent the number of hours that a person rents the bike. The total amount paid for renting the bike for x hours would be

13 + 9x

Mike paid 67 dollars to rent a bike. This means that

13 + 9x = 67

Subtracting 13 from both sides of the equation, it becomes

9x = 67 - 13 = 54

x = 54/9 = 6

enyata [817]3 years ago
6 0

In this question, we're trying to find how many hours Mike had the bike for.

We know that 13 dollars as a flat rate.

We also know that they charge 13 dollars and hour.

Mike paid a total of 67 dollars for the bike.

Lets represent this as an equation:

67 = 9x + 13

x = hours the bike was rented

Solve for x:

67 = 9x + 13

Subtract 13 from both sides

54 = 9x

Divide both sides by 9

6 = x

This means that Mike rented the bike for 6 hours.

Answer:

6 hours

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riadik2000 [5.3K]

Complete question is;

The levels of mercury in two different bodies of water are rising. In one body of water the initial measure of mercury is 0.05 parts per billion (ppb) and is rising at a rate of 0.1 ppb each year. In the second body of water the initial measure is 0.12 ppb and the rate of increase is 0.06 ppb each year.

Which equation can be used to find y, the year in which both bodies of water have the same amount of mercury?

A) 0.05 – 0.1y = 0.12 – 0.06y

B) 0.05y + 0.1 = 0.12y + 0.06

C) 0.05 + 0.1y = 0.12 + 0.06y

D) 0.05y – 0.1 = 0.12y – 0.06

Answer:

Option C: 0.05 + 0.1y = 0.12 + 0.06y

Step-by-step explanation:

In the first body, the initial measure of mercury is 0.05 parts per billion (ppb) while it's rising at a rate of 0.1 ppb each year. We are told to use y for the number of years.

Thus, amount of mercury for y years in this first body is;

A1 = 0.05 + 0.1y

Now, for the second body, we are told that;the initial measure is 0.12 ppb and the rate of increase is 0.06 ppb each year.

Thus, amount of mercury for y years in this second body is;

A2 = 0.12 + 0.06y

Since we want to find the year in which both bodies of water have the same amount of mercury. Thus, it means;

A1 = A2

Thus;

0.05 + 0.1y = 0.12 + 0.06y

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myrzilka [38]

a. Expressing y in terms of x, y = 20/(x + 3)

b. When x = 5, the value of y is 2.5

The question has to do with inverse variation.

<h3>What is inverse variation?</h3>

Inverse variation is variation in which one quantity varies inversely as the other.

<h3>a. How to express y in terms of x?</h3>

Given that y is inversely as x + 3 and that y = 4 when x = 2.

Since y varies inversely as x + 3, we have

y ∝ 1/(x + 3)

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When y = 4, x = 3. So

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<h3>b. Find the value of y when x = 5.</h3>

Since  y = 20/(x + 3)

Substituting x = 5 into the equation, we have

y = 20/(x + 3)

y = 20/(5 + 3)

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So, when x = 5, the value of y is 2.5

Learn more about inverse variation here:

brainly.com/question/27887206

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