3 years ago

A set of data already has the values 11, 14, 23, and 16. What value would have to be added to the set for the mean of the

1 answer:

6 0

Your answer is 26.

We have to go at this kind of backward.

We find the average by adding up the numbers, then dividing by how many numbers we have.

In this example, we will have 5 numbers...so
x divided by 5 = 18

x/5 = 18
x = 90

The sum of all 5 numbers is 90, so then subtract the 4 numbers you already know to find the one you’re missing. (We’ll call it n)

90 - 8 - 12 - 18 - 26 = n

90 - 64 = n
n = 26

Please let me know if you have any questions.

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The length of a rectangle is three times its width. if the area of the rectangle is 300 yd2 , find its perimeter.

Svetradugi [14.3K]

Let, width = x
Length = 3x

It is given that, 3x * x = 300
3x² = 300
x² = 300 / 3
x = √100
x = 10
& 3x = 3(10) = 30

Perimeter = 2(l + w)
P = 2(10 + 30)
P = 2(40) = 80

In short, Your Answer would be 80 Yards

Hope this helps!

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3 years ago

Which equations represent hyperbolas?

bezimeni [28]

Try this option:
1. Common view of hyperbola equation is:
$\frac{x^2}{a} - \frac{y^2}{b} =1 \ , where \ a,b-numbers$
2. hyperbolas are: 2x²+4x-5y²-10y+57=0 and -x²+12x+3y²+7y+11=0.

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3 years ago

Read 2 more answers

8.517 in two other ways

vichka [17]

8.517 as a Fraction:8 and 500/1000 ( This is a mixed number)
8.517 as a Percentage: 815.7%

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4 years ago

What is three-sevenths of sixty-three

Maksim231197 [3]

Hello there!

3/7 of 63 = 27

Hope I helped!

Let me know if you need anything else!

~Zoe

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