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klemol [59]
3 years ago
15

What is 3 over 4 times 7

Mathematics
1 answer:
cupoosta [38]3 years ago
8 0

Answer:

21/4

Step-by-step explanation:

3/4 x 7

you need to multiply 7 by the 3 which gives you 21

so 21/4

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Algebraic expression and identity 1)simplify the following (3a+b)3 +(3a-b)3
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Answer:

(3a+b)^3+(3a-b)^3=54a^3+18ab^2

Step-by-step explanation:

Given: (3a+b)^3+(3a-b)^3

Formula: x^3+y^3=(x+y)(x^2-xy+y^2)

(x+y)^2=x^2+2xy+y^2

(x-y)^2=x^2-2xy+y^2

x\rightarrow 3a+b

y\rightarrow 3a-b

\Rightarrow (3a+b+3a-b)((3a+b)^2-(3a+b)(3a-b)+(3a-b)^2)

\Rightarrow (6a)(9a^2+b^2+6ab-9a^2+b^2+9a^2+b^2-6ab)

\Rightarrow (6a)(9a^2+3b^2)

\Rightarrow 54a^3+18ab^2

5 0
3 years ago
1/3 to 1/6 identify the percent of change
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Answer:

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Step-by-step explanation:

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6 0
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