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Elanso [62]
3 years ago
7

Ann thought of a number N, multiplied it by 5 and added 7. Then she told the result R to Jim. Write a formula that will tell you

the value of R for any value of N
Mathematics
1 answer:
antoniya [11.8K]3 years ago
6 0

Answer:

R=5N +7

Step-by-step explanation:

We want to write a formula for the statement:

Ann thought of a number N, multiplied it by 5 and added 7.

When we multiply N by 5, we get 5N

When we add 7 to 5N we get 5N+7

Our formula now becomes:

R=5N +7

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The price of Stock A at 9 A.M. was ​$14.65. Since​ then, the price has been increasing at the rate of ​$0.13 each hour. At noon
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Answer:

The prices of the two stocks will be the same in 1.56 hours.

 

The price of Stock A at 9 A.M. was ​$12.95 Since​ then, the price has been increasing at the rate of ​$0.12 each hour.

This means that after x hours, the value of Stock A is:

After noon:

Noon is 3 hours after 9 AM, so

So in x hours after noon, the value is given by:

At noon the price of Stock B was ​$13.70. It begins to decrease at the rate of ​$0.13 each hour.

This means that after x hours, the value of Stock B is:

In how many hours will the prices of the two stocks be the​ same?

This is x for which:

The prices of the two stocks will be the same in 1.56 hours.

Step-by-step explanation:

Hope this helps:)

5 0
2 years ago
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If Marissa bakes 30 cookies every 15 minutes, how many cookies can Marissa make in 42 minutes?​
marissa [1.9K]

Answer:

84 cookies

Step-by-step explanation:

First, find the amount she bakes per minute. It is given that Marissa bakes 30 cookies every 15 minutes, or:

30 cookies/15 minutes = 2 cookies/minute.

Marissa bakes 2 cookies per minute. Multiply 2 with 42 minutes to find the total cookies baked in 42 minutes:

42 x 2 = 84

84 cookies is your answer.

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Answer:

29.6*

Step-by-step explanation:

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