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alexgriva [62]
2 years ago
14

Please help !!!!:!:):):$:)

Mathematics
2 answers:
IRISSAK [1]2 years ago
6 0
The correct answer is B
djverab [1.8K]2 years ago
4 0

Answer: B. 9(−7+10x^2)

Step-by-step explanation: 9(−7+10x^2)

=(9)(−7+10x^2)

=(9)(−7)+(9)(10x^2)

=−63+90x^2

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Find the smallest non-zero whole number n such that 756n is a perfect cube.
Kitty [74]

Step-by-step explanation:

756 = 2² * 3³ * 7.

For 756n to be a perfect cube, all of its prime factors must have a power that is a multiple of 3.

How to get from 2² to 2³: Multiply by 2.

3³ has already a power that is a multiple of 3.

How to get from 7 to 7³: Multiply by 7².

Hence n = 2 * 7² = 98.

5 0
2 years ago
Write an expression to represent "triple the<br> quotient of a number and three."
Furkat [3]

Answer:

3n/3     or  3n÷3

Step-by-step explanation:

since it says triple the quotient of a <u>number</u>, we can use the number n.

To find the quotient means to divide and it's going to be by that numer.....n....... trippled (3)

put them all together and you get 3n/3

4 0
2 years ago
What is the exponent on 10 when you right 5.3 in scientific notation?
salantis [7]
It is zero

the answer is 5.3 x 10^0
because 10^1 would force you to move the decimal place to make it 53

I hope this helps!
8 0
3 years ago
Find the sum. Write the addition property you used. 28+29+42=
Zolol [24]

Step-by-step explanation:

28+29=57

57+42=99 so 99 should be your answer

4 0
3 years ago
Read 2 more answers
What is the length of AC?
natima [27]

7/x = 84 / (156 -x)
84x = 7(156 -x)
84x = 1092 - 7x
91x = 1092
x = 12

AC = 156 - 12 = 144

answer
D. 144
3 0
3 years ago
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