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3 years ago

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Mathematics

2 answers:

stepladder [879]3 years ago

7 0

Answer:

the correct answer would be option letter B

Step-by-step explanation:

eduard3 years ago

6 0

Answer:

my weight is thee answer and I need answer choices

Step-by-step explanation:

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Points Z(4,3) X(-5,-2) Y(4,-2) plot them and then find the perimeter and area

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Answer:

z(43)x(−5−2)y(4−2)

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2 years ago

the 8th grade class planned a trip to kings dominion and 120 students went. Ten students rode with their parents. The rest rode

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3 years ago

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What is theoretical probability

Minchanka [31]

The The likeness of an event happening

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3 years ago

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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

tatuchka [14]

Answer:

609.55

Step-by-step explanation:

789.34−45.75+145.67+503−782.71=609.55

3 0

2 years ago