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3 years ago

8

An athlete trains for 95 min each day for as many days as possible.Write an equation that relates the number of days d that the

athlete spends training when the athlete trains for 855 min.

1 answer:

mrs_skeptik [129]3 years ago

6 0

855=95d

855 minutes is equal to 95 minutes times the number of days run

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Mary is trying to save money for a car. The equation y= 250x+1000 represents how much she saves, where y is the amount in her sa

Liono4ka [1.6K]

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it'll take her 36 months

Step-by-step explanation:

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3 years ago

Make v the subject of the formula in H=m(v²-u²)/2gx

goldfiish [28.3K]

Answer:

$v=\sqrt{\dfrac{H\times 2gx}{m}+u^2}$

Step-by-step explanation:

The given formula is :

$H=\dfrac{m(v^2-u^2)}{2gx}$

We need to find the formula for v.

Cross multiplying the given formula.

$H\times 2gx=m(v^2-u^2)$

Dividing both sides by m. So,

$\dfrac{H\times 2gx}{m}=\dfrac{m(v^2-u^2)}{m}\\\\(v^2-u^2)=\dfrac{H\times 2gx}{m}$

Adding both sides by u².

$(v^2-u^2)+u^2=\dfrac{H\times 2gx}{m}+u^2\\\\v^2=\dfrac{H\times 2gx}{m}+u^2\\\\\text{So},\\\\v=\sqrt{\dfrac{H\times 2gx}{m}+u^2}$

Hence, this is the required formula.

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2 years ago

4 Which of the following could be the areas of the three squares shown?

Step2247 [10]

Answer:

83 due to the lack of explanation

Step-by-step explanation:

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3 years ago

For a certain population of sea urchins, 16% are longer than 8 inches. A random sample of 75 sea urchins will be selected. What

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Answer:

0.042

Step-by-step explanation:

Given :

p = 16% = 0.16

q = 1 - p = 1 - 0.16 = 0.84

Sample size, n = 75

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√0.001792

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2 years ago

Mark just received word that he scored 88% on a trigonometry test. Mark is also in an advanced algebra course. Is Mark's score o

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First off, it would not be C because there are no guidelines to score too high on a test
Then, D would also be wrong because since he scored high, it doesn't just mean that the test was easy.
Now it comes to the yes or no between A and B, since he is just one of the many students in Trigonometry, it cant be a very accurate representation therefore the answer to the problem would be A
Solution: A. No, because Mark is not representative of the population of the trigonometry class

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3 years ago