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2 years ago

Find the whole. 60% of what number is 9?

Mathematics

2 answers:

valentinak56 [21]2 years ago

8 0

Answer:

60% of 15 is 9

Step-by-step explanation:

Alecsey [184]2 years ago

5 0

Answer:

Step-by-step explanation:

60% × ? = 9

? =

9 ÷ (60 ÷ 100) =

(100 × 9) ÷ 60 =

900 ÷ 60 =

How do we check the result?

If 60% × 15 = 9 =>

Divide 9 by 15...

... And see if we get as a result: 60%

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(2a^2b + 3ab^2 - b^3) - (4b^3 - 3ab^2 -6a^2b)

skelet666 [1.2K]

Hi there!

~

$(2a^2b+3ab^2-b^3)-(4b^3-3ab^2-6a^2b)$

Distribute the Negative Sign:

$= 2a^2 b + 3ab^2 - b^3 + -1(4b^3 - 3ab^2 - 6a^2b)\\= 2a^2 b + 3ab^2 + - b^3 + -1 (4b^3) + -1 (-3ab^2) + -1 (-6a^2b)\\= 2a^2 b + 3ab^2 + -b^3 + -4b^3 + 3ab^2 + 6a^2 b$

Combine Like Terms:

$= 2a^2 b + 3ab^2 - b^3 + -4ab^3 + 3ab^2 + 6a^2 b\\= (2a^2 b + 6a^2 b) + ( 3ab^2 + 3ab^2) + (-b^3 + -4b^3) \\= 8a^2 b + 6ab^2 + -5b^3$

Answer : $8a^2 b + 6ab^2 + -5b^3$

Hope this helped you!

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