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3 years ago

PLEASE HELP I WILL MARK YOU BRAINLIEST

Mathematics

2 answers:

Scrat [10]3 years ago

6 0

Answer:

Step-by-step explanation:

$\frac{2}{3}$ × 63 = 2 × 21 = 42

Her prediction was correct as $\frac{2}{3}$ of 63 = 42 → B

dimulka [17.4K]3 years ago

3 0

B.Yes because that is what I think

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MakcuM [25]

Answer:

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2 years ago

I bought 2 1/2 gallons of paint but i only used 1/2 gallon of the paint. how much paint do i have left?

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I hope this helps you

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3 years ago

(pls fast) A scale drawing of a kitchen is shown below. The scale is 1 : 20.

viktelen [127]

Answer:

6 2/3 ft by 8 1/3 ft

Step-by-step explanation:

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3 years ago

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Use the correct order of operations to calculate5 1/2 * 4 1/2 -7/2/ 2 1/3

IgorC [24]

If there are multiple operations at the same level on the order of operations off from left to right and you work like this first noticed that there are no parentheses or exponents so we moved to multiplication and division with any sense of parentheses

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3 years ago

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From a group of 8 volunteers, including Andrew and Karen, 4 people are to be selected at random to organize a charity event. Wha

Helga [31]

Answer:

The correct option is D. 2/7

Step-by-step explanation:

Consider the provided information.

There are 8 volunteers including Andrew and Karen, 4 people are to be selected at random to organize a charity event.

We need to determine the probability Andrew will be among the 4 volunteers selected and Karen will not.

We want to select Andrew and 3 others but not Karen in the group.

Thus, the number of ways to select 3 member out of 8-2=6

(We subtract 2 from 8 because Andrew is already selected and we don't want Karen to be selected, so subtract 2 from 8.)

The required probability is:

$\dfrac{^6C_3}{^8C_4}=\dfrac{\frac{6!}{3!3!}}{\frac{8!}{4!4!}}\\\\\\\dfrac{^6C_3}{^8C_4}=\frac{20}{70}\\\\\\\dfrac{^6C_3}{^8C_4}=\dfrac{2}{7}$

Hence, the correct option is D. 2/7

6 0

3 years ago