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3 years ago

Math Help Please?

Mathematics

2 answers:

hjlf3 years ago

5 0

The median is 3 that's all I know

Lelechka [254]3 years ago

5 0

The Variance:

(12+6+8+5+2+7+3+5+6+7)/10=6.1 is mean (average)
Then you subtract 6.1 from each number in the data set and after getting the result you do the same thing as finding the average but you also have to square the result. So:
(5.9^2+(-0.1)^2+1.9^2+(-1.1)^2+(-4.1)^2+0.9^2+(-3.1)^2+(-1.1)^2+(-0.1)^2+0.9^2)/10= 6.89
Variance is 6.89.

<span>Standard Deviation is just the square root of Variance, so:
</span><span>√6.89=2.62 (the answer is rounded)</span>

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serious [3.7K]

Given:

The figure of a square base pyramid.

To find:

The area of volume of the pyramid.

Solution:

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$B=(16)^2$

$B=256$

Area of one triangular side of the pyramid is:

$A_1=\dfrac{1}{2}\times base\times height$

$A_1=\dfrac{1}{2}\times 16\times 13$

$A_1=104$

Now, the total surface area of the pyramid is:

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$A=672$

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The volume of the pyramid is:

$V=\dfrac{1}{3}Bh$

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Hence the correct option is d.

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3 years ago

What is the value of x^2 - 3y + 5x + 2 whenx = 7 and y = 4?

PilotLPTM [1.2K]

Answer:

Step-by-step explanation:

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3 years ago

Mrs. Perry is taking a group of students to the Clark Planetarium where tickets cost $7 each. The bus will cost $50 and she has

kenny6666 [7]

Answer:
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Explanation:

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So you subtract 50 on both side and you are left with 7x=150 so you have to divide 7 on both side next and you get about 71.4... so basically just round it up to 71 people

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3 years ago

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lutik1710 [3]

0x 10 = -10
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2 years ago