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Valentin [98]
3 years ago
15

I toss a coin 20 times. comes up "Heads" 7 times. What is the 1 point

Mathematics
1 answer:
Semmy [17]3 years ago
7 0

Answer in fraction form =  7/20

Answer in decimal form = 0.35

Answer in percent form = 35%

These are three ways to say the same thing.

======================================================

Explanation:

To get the relative frequency, you divide the number of times heads comes up out of the number of tosses total. Reduce the fraction as much as possible. In this case, 7 and 20 have no factors (other than 1) in common. So the fraction 7/20 cannot be reduced further.

The fraction 7/20 converts to the decimal form 0.35 after using a calculator or long division.

0.35 converts to 35% after moving the decimal over to the right two spots.

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nydimaria [60]

Answer:

c = 10h

Step-by-step explanation:

c = 8h

Where,

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h = Number of hours

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A. 8 is the constant of proportionality and it means Nila charges $8 per hour of babysitting

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Step-by-step explanation:

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3 years ago
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mart [117]

This question is incomplete

Complete Question

Write a rational equation that relates the desired percentage p, to the amount A of a 30% solution that needs to be added to 1 liter of 10% acid solution to make a blend that is p% acid, where 0<p<100 . What is a reasonable restriction on the set of possible values of ? Explain your answer.

Answer:

100(0.1 + 0.3A)= (1 + A) P

Step-by-step explanation:

A of a 30% solution that needs to be added to 1 liter of 10% acid solution to make a blend that is p% acid,

Hence,

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Divide both sides by 1 + A

0.1 + 0.3A/ 1 + A = p/100

Cross Multiply

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From the above calculation, we can see that, the blend that would be formed is not lower than 10% or greater than 30%

10% < p< 30%

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miv72 [106K]

Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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