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3 years ago

Find the perimeter of a rectangle with a length of (attachment 1) and a width of(attachment 2) .

Mathematics

1 answer:

son4ous [18]3 years ago

5 0

$P_{\fbox{ }}=2w+2l\\\\w=x^2+2x+7;\ l=-2x+8\\\\P_{\fbox{ }}=2(x^2+2x+7)+2(-2x+8)=2x^2+4x+14-4x+16\\\\\boxed{P_{\fbox{ }}=2x^2+30}$

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Is 13t an algebraic expression like does it mean 13 Times T or is it just 13 and a number representing t

spin [16.1K]

Answer:

This is an algebraic expression

Step-by-step explanation:

U won't ever use t to mean multiplication u will use a . Or × or a letter next to a number to symbolise mutiplication

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2 years ago

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3 years ago

Expand and combine like terms (3z^5 +7z^2)^2

AVprozaik [17]

Answer:

$\displaystyle{(3z^5+7z^2)^2 = 9z^{10}+42z^7 + 49z^4 }$

Step-by-step explanation:

Since it's a perfect square, we can simply use the formula:

$\displaystyle{(ax+by)^2 = a^2x^2+2abxy+b^2y^2}$

Given the perfect square expression $\displaystyle{(3z^5+7z^2)^2}$ . Apply perfect square formula:

$\displaystyle{(3z^5+7z^2)^2 = 3^2(z^5)^2+2(3)(7)(z^5)(z^2) + 7^2(z^2)^2 }$

Knowing laws of exponent is mandatory when it comes to algebra. Recall that:

$\displaystyle{(a^m)^n = a^{mn}}\\\\\displaystyle{a^m \cdot a^n = a^{m+n}}$

Apply laws of exponent to simplify the terms or expression:

$\displaystyle{(3z^5+7z^2)^2 = 9z^{10}+42z^7 + 49z^4 }$

Since there are no like-terms to do operation with (these terms have different degrees so they are not considered to be like-terms.) Therefore, the final answer is:

$\displaystyle{(3z^5+7z^2)^2 = 9z^{10}+42z^7 + 49z^4 }$

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10 months ago

Mindy has 4 red lollipops, 2 green, and 3 blue lollipops to choose from. What is the complement of her choosing a blue lollipop?

Masteriza [31]

Answer: I’m not sure what compliment is but she would have to pick 7 to guarantee that she gets at least 1 blue lollipop

Step-by-step explanation:

There are 9 in total. 6 not blue. There are 3 blue. Assuming she gets terrible luck, she would have to take all of the non blue first which is 6. Then she would take another one to make sure she gets at least 1 blue lollipop

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2 years ago

Read 2 more answers

Someone please help me , I really need help

Andrej [43]

Answer:

Step-by-step explanation:

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2 years ago