3 years ago

Which Algerbredic expression is equivelant to the expression below

Mathematics

2 answers:

Harrizon [31]3 years ago

7 0

Answer:

<h2>hope it helps you see the attachment </h2>

Reil [10]3 years ago

3 0

21x + 40.

If you multiply 7x by 3, you get 21x.

Then, multiply 3 by 12 and add 4.

3 * 12 = 36

36 + 4 = 40.

Our new equation is 21x + 40.

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A cube has a volume of 343 cubic inches what is it's surface area

mr_godi [17]

Answer:

294in²?

Step-by-step explanation:

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3 years ago

Describe the error Sadie made, and explain how to find the correct answer. (Refer to image)

ki77a [65]

1. Sadie should note that $54a^7b^3\ge 0$ and if $a\ge 0$ , then $b\ge 0$ .

2. While simplifying Sadie makes some mistakes (it must be $3^2$ instead of $3^3$ and she missed the sign of absolute value for b). The right way to find the correct answer is:

$\sqrt{54a^7b^3}=\sqrt{3^2\cdot 6\cdot a^2\cdot a^5\cdot b^2\cdot b} =3\cdot a\cdot |b| \sqrt{6\cdot a^5\cdot b}=3ab\sqrt{6a^5b}$ .

3. The simpliest expression is $3ab\sqrt{6a^5b} =3ab\sqrt{6\cdot a^2\cdot a^2\cdot a\cdot b} =3a^3b\sqrt{6ab}$ .