3 years ago

1. Find the length a of the altitude drawn to the hypotenuse. [Triangle is not drawn to scale.]

Mathematics

1 answer:

Minchanka [31]3 years ago

5 0

Answer:

Step-by-step explanation:

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Marco can swim at a speed of 45

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8. There are 10 balls in a bag numbered from 1 to 10. Three balls are selected at random without replacement.

PIT_PIT [208]

Answer:

a. 720

b. 0.3

Step-by-step explanation:

Three balls are selected at random without replacement.

First ball can be selected in 10 ways

Second ball can be selected in 9 ways

Third ball can be selected in 8 ways

Thus, there are 10×9×8 =720 different ways of selecting three balls.

There are three cases that satisfy this condition

first ball picked is 5, the others are not
first ball is not 5, second is 5, third is not
first and second ball is not five, third ball is 5

Each probabilities are:

$\frac{1}{10} * \frac{9}{9} *\frac{8}{8} =\frac{1}{10}$
$\frac{9}{10} *\frac{1}{9} *\frac{8}{8} =\frac{1}{10}$
$\frac{9}{10} *\frac{8}{9} *\frac{1}{8} =\frac{1}{10}$

Thus, one of the balls selected is the number 5 is then $\frac{1}{10} + \frac{1}{10} + \frac{1}{10} = \frac{3}{10}$

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3 years ago

Edwin walks for 2 hours. He walks 1 miles in the first hour, 1 miles in the second hour and 1 of the total distance in the last

Free_Kalibri [48]

Is it 3 miles? From what you wrote, I believe this would be the answer.

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The chance that you make a three-point shot in a basketball game is 30%. How many three-point shots would you expect to make if

Ganezh [65]

So 3 in every 10 would make it because 30% equals 3/10 and since there are 50 that would be 5 sets of 10. Thus 3*5=15. You would make 15 shots

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3 years ago

Max's pet worm lives in a cardboard box that has a volume of 808080 cubic centimeters.

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Answer:

wow that's one lucky worm

Step-by-step explanation:

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