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OlgaM077 [116]
3 years ago
6

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

Mathematics
1 answer:
Marysya12 [62]3 years ago
6 0

Answer:

c

Step-by-step explanation:

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X+y=12 x=5<br> ill give brailiest
soldier1979 [14.2K]

Answer:

y=7

Step-by-step explanation:

x+y=12

x=5

12-5=7

4 0
4 years ago
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Someone please help me with this.
notka56 [123]
Forty_five point five
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3 years ago
Inspect the number line. Which square roots have a difference of about 0.5? StartRoot 11 EndRoot and StartRoot 14 EndRoot StartR
natka813 [3]

Answer:

d

Step-by-step explanation

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5 0
3 years ago
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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.

3 0
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

Hope this helps

8 0
2 years ago
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