4 years ago

What is the solution to this system of linear equations?

Mathematics

1 answer:

murzikaleks [220]4 years ago

3 0

Answer:

de correct one is

x 0

y 3

hope u got it

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Abby scored 87, 86, 93, and 89 on her first four history quizzes. What score does Abby need to get on her fifth quiz to have an

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Answer:

Step-by-step explanation:

The average of a data set is just all the numbers added up divided by the amount of numbers.

If we already have 4 pieces of data and we're looking for one more, we have 5 data pieces.

This means that the sum of all of the numbers in the data set will be $91\cdot5=455$ if the mean is 91.

We can find the missing value by adding up what we know and subtracting from 455.

$87+86+93+89=355\\\\455-355=100$

So Abby needs a 100% on her fifth history quiz to have an average of 91 on all her quizzes.

Hope this helped!

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3 years ago

How to right a precent of 53 over 200

AlekseyPX

To write a percent of $\frac{53}{200}$ , we do:
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4 years ago

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Step-by-step explanation:

Arc length is the product of central angle(in radians) and radius.

i.e.

arc length=radius *central angle(in radians)

$s=r*theta\\s=3*\frac{\pi }{4}\\ s=\frac{3\pi }{4}$

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3 years ago

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