3 years ago

Help me pls !!!!!!!!!!

Mathematics

1 answer:

Marysya12 [62]3 years ago

6 0

Answer:

Step-by-step explanation:

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X+y=12 x=5<br> ill give brailiest

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Answer:

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Step-by-step explanation:

x+y=12

x=5

12-5=7

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4 years ago

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notka56 [123]

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Inspect the number line. Which square roots have a difference of about 0.5? StartRoot 11 EndRoot and StartRoot 14 EndRoot StartR

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A rectangle has a height of k^2+3k 2 +3k, squared, plus, 3 and a width of k^2+7k 2 +7k, squared, plus, 7. Express the area of th

vlada-n [284]

Answer: $k^4+10k^3+21k^2$

Step-by-step explanation:

Given

Height of rectangle is $h=k^2+3k$

Width is $w=k^2+7k$

The area of the rectangle is given by the multiplication of the height and width

$\Rightarrow A=\left(k^2+3k\right)\left(k^2+7k\right)\\\\\Rightarrow A=k^2k^2+k^2\cdot \:7k+3kk^2+3k\cdot \:7k\\\\\Rightarrow A=k^4+10k^3+21k^2$

Thus, the area of the rectangle is $k^4+10k^3+21k^2$ .

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3 years ago

7th grade math help pls i've had to redo this question 3 times cause my teacher.

sasho [114]

Answer:

neon: 0 percent change oxide: -2 percent change copper: 2 percent change tin: 0 percent change

Step-by-step explanation:

Neon: -10+10=0

Oxide: -10+8=-2

Copper: -27+29=2

Tin: -50+50=0

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