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3 years ago

20 times what equals 8

Mathematics

2 answers:

BaLLatris [955]3 years ago

8 0

8x=20

x=2.5

To check

8(2.5)=20

Vitek1552 [10]3 years ago

5 0

Answer:

The answer is 0.4

Step-by-step explanation:

Because 8 divided by 20 is 0.4

Hope this helped have a great day

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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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4 years ago

How to factor 4x^2+4x+1 completely? I already solved it to be (2x+1)^2 but I am not sure of the method (difference of squares, p

ziro4ka [17]

Answer:

Trinomial can not be factored

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3 years ago

If this is wrong I WILL report you

MaRussiya [10]

The correct answer is #2: 6,2 9,3 12,4 because all of these answers equal 1/3

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4 years ago

In the game of Keno, a player starts by selecting 20 numbers from the numbers 1 to 80. After the player makes his selections, 20

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The percentage of winning if 20 winning numbers are randomly selected from numbers 1 to 80 is 12.48%.

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Probability is the chance of happening an event among all the events possible.

Probability of winning is calculated as under:

Probability= $C(20,3)C(60,17)/C(80,20)$

We have taken C(20,3) because player will win if 5 numbers are selected from 20 winning numbers.

We have taken C(60,17) because after selection of 20 numbers 60 numbers will left from 80 and after winning from 3 numbers 17 numbers left and from total 80, 20 numbers are taken.

=C(20,3)C(60,17)/C(80,20)

=(20!/3!17! * 60!/17!43!)/80!/20!60!

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=12.48%

Hence the probability of winning is 12.48%.

Learn more about probability at brainly.com/question/24756209

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2 years ago

What is the equation in slope-intercept form of a line that is parallel to y=2x+5 and passes through the point (2, 8)?

trapecia [35]

Answer:

Step-by-step explanation:

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3 years ago

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