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Katena32 [7]
3 years ago
8

Which is the correct way to model the equation -X+8 = (X+(-8) using algebra tiles?

Mathematics
2 answers:
kari74 [83]3 years ago
5 0

Answer:

-x+8=7\cdot{x}-8

Step-by-step explanation:

In order to have both sides equal to each we must have terms that cancel out:.

First scenario:

x+8=7\cdot{x}+8

Second scenario

8\cdot{x}=7\cdot{x}-8

Third scenario

-x+8=7\cdot{x}-8

Fourth scenario

8\cdot{x}-1=7-8\cdot{x}

The answer is the third scenario because it gives an answer of x=8 when solved, which satisfies the model

Lilit [14]3 years ago
3 0

Answer:

1 negative x tile and 8 positive unit tile on the left. 7 positive x tiles and 8 negative units on the right side

Step-by-step explanation:

i think this is the answered because if you just look on the left side then you can tell you need a negative one and it is connected to an x.

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125 hours = ___days ___hours
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Answer:

5 days and 5 hours

Step-by-step explanation:

24*5=120

125-120=5

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7 0
3 years ago
If 2^(x+3) - 2x = k(2^x) what is the value of k
svlad2 [7]

Answer:

\large\boxed{C)\ 7}

Step-by-step explanation:

Use:

a^n\cdot a^m=a^{n+m}

2^{x+3}-2^x=2^x\cdot2^3-2^x=8\cdot2^x-2^x=(8-1)\cdot2^x=7\cdot2^x\\\\2^{x+3}-2^x=k(2^x)\\\\7\cdot2^x=k(2^x)\Rightarrow k=7

8\cdot2^x-2^x=8\cdot2^x-1\cdot2^x=(8-1)(2^x)=7\cdot2^x\\\\\text{distributive property:}\ a(b-c)=ab-ac

8 0
3 years ago
1 and 2 form a linear pair. If the
natka813 [3]

Angles that form a linear pair add up to 180 degrees.

If the measure of angle 1 is 113, then all we must do is subtract:

180-113=67 degrees

And we're done!

Good luck! :)

Hope it helps you!

GraceRosalia ✺                    ✺                      ✺          ✺              ✺             ✺          ✺

8 0
3 years ago
Please help!!<br>solve for x
timurjin [86]

Answer:

4

Step-by-step explanation:

These both angles are vertically opposite angles. And, vertically opposite angles are equal. So,

→ 5x ― 6 = 3x + 2

→ 5x ― 3x = 2 + 6

→ 2x = 8

→ x = 8/2

→ x = 4

<u>Therefore</u><u>,</u><u> </u><u>the</u><u> </u><u>value</u><u> </u><u>of</u><u> </u><u>x</u><u> </u><u>is</u><u> </u><u>4</u><u>.</u>

4 0
2 years ago
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