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Advocard [28]
3 years ago
6

The mean of four numbers is 7. Three of the numbers are 5,7 and 7. What is the fourth number?

Mathematics
2 answers:
GenaCL600 [577]3 years ago
7 0

Answer:

9 is the fourth number.

Step-by-step explanation:

9 is the fourth number because 7(mean) x 4(amount of numbers) = 28 and 7 plus 7 plus 5 plus 9 equals 28 so when you divide you get 7.

Marrrta [24]3 years ago
5 0

Answer:

fourth number is 9

Step-by-step explanation:

let 'x' equal the fourth number

(5+7+7+x)/4 = 7

cross-multiply to get:

19 + x = 28

x = 9

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A letter is randomly chosen from the word EXCELLENT. Write each probability as a fraction, decimal, and a percent.
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The answer is below

Step-by-step explanation:

The question is not complete. A complete question is in the form:

A letter is chosen at random from the letters of the word EXCELLENT. Find the probability that letter chosen is i) a vowel ii) a consonant.

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The total number of letters found in the word EXCELLENT = 9

i) The number of vowel letters found in the word EXCELLENT = {E, E, E} = 3

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