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1 year ago

X/6=9/20 What is the answer?

Mathematics

1 answer:

Whitepunk [10]1 year ago

8 0

Step-by-step explanation:

$\frac{x}{6} = \frac{9}{20} \\$

$x \times 20 = 9 \times 6$

$20x = 54$

$x = \frac{54}{20} \\$

$x = 2.7$

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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

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3 years ago

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Rashid [163]

Answer:

84 cm^2

Step-by-step explanation:

The area of a triangle is

A = 1/2 bh where b is the length of the base and h is the height

A = 1/2 ( 5+9) * 12

A = 1/2 (14) * 12

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2 years ago

How many day does it take to paint 50 small planters and 24 large planters

katrin [286]

I believe there is more to the question because there is not enough information for a valid answer.

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3 years ago

Is 7/9 greater than or less that 8/9

snow_tiger [21]

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2 years ago

Read 2 more answers

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Savatey [412]

Answer: B. 431.59

Step-by-step explanation:

1.6*12 =19

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2 years ago