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3 years ago

13

The diagram shows a square divided into strips of equal width. Three strips are black and two are grey. What fraction of the per

imeter of the square is grey?

1 answer:

astra-53 [7]3 years ago

8 0

2/5 at the top nd bottom, but 0/5 on the sides. So 2/5 + 0/5= 1/5

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Melissa’s birthday is next week and she has been receiving cards in the mail with different amounts of money. She has received 5

hoa [83]

Adding another card with value $25 would decrease the standard deviation because it is closer to the mean the the current standard deviation.

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3 years ago

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Students were asked how many pairs of shoes they owned. Their responses were 8, 2, 1, 5, 7, 6, 2, 2, 8, and 3.

IRINA_888 [86]

Answer:

4.4

Step-by-step explanation:

The mean is the sum of the data divided by the number of data values. so add them all together and then divide by how many numbers you added together.

Here is an example 1,3,4,5,7 so add 1+3+4+5+7=20 then you divide 20 by 5 and the mean is 4 for this example.

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3 years ago

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What is 184.24 to 4 significant figures

siniylev [52]

184.2 is the answer to 4 significant figure

4 0

3 years ago

Plz help ASAP! I will mark brainliest if correct

MaRussiya [10]

A = L^2
A = L^2 = 2^2 + 4^2 (Pythagorean’s theorem)
A = L^2 = 20
Therefore the area of the square is 20 units square.

5 0

3 years ago

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PLEASE HELP ME!!!!!!!!!

vitfil [10]

<h2>1)</h2>

$(x - 4) {}^{2} - 28 = 8 \\ (x - 4) {}^{2} = 8 + 28 \\ (x - 4) {}^{2} = 36$

This must be true for some value of x, since we have a quantity squared yielding a positive number, and since the equation is of second degree,there must exist 2 real roots.

$\sqrt{(x - 4) {}^{2} } = ± \sqrt{36} \\x - 4 = ±6 \\ x _{1}- 4 = 6 \: \: \: \: \: \: \: \: \: \: x _{2}- 4 = - 6 \\ x_{1} = 6 + 4 \: \: \: \: \: \: \: \: \: \: x_{2} = - 6 + 4 \\ x_{1} = 10 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x_{2} = - 2$

<h2>2)</h2>

Well he started off correct to the point of completing the square.

$(x - 3) {}^{2} = 16 \\ x - 3 = ±4 \\ \: x_{1} - 3 = 4 \: \: \: \: \: \: \: \: \: \: \: \: x_{2} - 3 = - 4 \\ x_{1} = 7 \: \: \: \: \: \: \: \: \: \: x_{2} = - 1$

8 0

1 year ago