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3 years ago

13

A computer store has 75 printers of which 35 are laser printers and 40 are ink jet printers. if a group of 10 printers is chosen

at random from the store, find the mean and variance of the number of ink jet printers.

1 answer:

JulijaS [17]3 years ago

6 0

Your mean for this problem would be 4.7 and you variance would be 2.5

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The legs of an isosceles right triangle are 5 inches long. What is the length of the hypotenuse of the triangle to the nearest i

In-s [12.5K]

The legs are 5 inches long.

Use the Pythagorean theorem:
$5^2+5^2=c^2 \\
25+25=c^2 \\
50=c^2 \\
c=\sqrt{50} \\
c=\sqrt{25 \times 2} \\
c=5 \sqrt{2} \\
c \approx 7$

The length of the hypotenuse of the triangle is approximately 7 inches long.

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The answer is 7(8 + 3)

Step-by-step explanation:

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