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3 years ago

Which algebraic expression represents the word expression "three times the square of a number, n, subtracted from 54"?

Mathematics

1 answer:

sveta [45]3 years ago

3 0

Answer:

54 - 3n²

Step-by-step explanation:

Square of a number n = n²

Three times the square of n = 3*n² = 3n²

Expression:

54 - 3n²

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1. If 6 + 3x = 27, what is 2x ? A. 7 B. 11 C. 14 D. 18 E. 22

Artemon [7]

Answer:

I don't know what you mean with a b c d and e, but x=7

Step-by-step explanation:

x=7 because first you subtract 6 from each side, because you wan't to have just x, so you will get 3x=21, and then you just divide both sides by3 to get x=7

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3 years ago

Identify the variation as direct, inverse, joint or combined. y = cx²

viva [34]

Answer:

combined variation

Step-by-step explanation:

we have

$y=cx^{2}$

we know that

a) in the interval ----> (0,∞)

If the value of x increase the value of y increase

Is a direct variation

b) in the interval ----> (-∞,0)

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therefore

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3 years ago

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Someone help me solve this and could you explain why too?

yulyashka [42]

Answer:

3.5

Step-by-step explanation:

Well its easiest to just plug in the answers and see like 2 times 3.5 is 7.

Another way is saying 7 divided by 2 is 3.5

then u check to make sure its the same for all the numbers.

Which it is because 21 divided by 6 is also 3.5 :)

5 0

3 years ago

Last summer, Marion was 3 1/2 feet tall. She was 4 inches taller than her brother Elijah. She was 1 1/4 feet shorter than her si

solniwko [45]

Answer:

Answers below

Step-by-step explanation:

Marion: 42 inches

Elijah: 38 inches

Lorie: 57 inches

Convert each to inches and solve.

Hope this helps!

8 0

3 years ago

In this rotation WXY is mapped to CBA. if QON = 55, then XOB measures _____.

CaHeK987 [17]

The correct answer would be 1

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3 years ago

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