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wel
3 years ago
5

Write the expression (−2)·(−2)·7·7·7·7·7 using exponents.

Mathematics
1 answer:
NeTakaya3 years ago
5 0

Answer:(-2)^{2}*7^{5}

Step-by-step explanation:

You have to group all of the same one's together and however many there is, you add that number as the exponent.

There were 2 "(-2)" so that became (-2)^{2}, and there were 5 "7" so that became 7^{5}. You keep the symbol and put it together which became (-2)^{2}*7^{5}

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100 Points! Will give brainliest!
disa [49]

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6 0
3 years ago
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X+3y-2z=10, -x-2y+z=-7, 3x+9y-5z=28
NISA [10]
Hmm
what you do is try to eliminate 1 variable in 2 equaions first
we can elminate x's in first and 2nd equation

add first and 2nd equation
x+3y-2z=10
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multiply 2nd equation by 3 and add to last one
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3y-2z=7

we now have
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now we can sub back
y-z=3
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x=3
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6 0
4 years ago
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kvv77 [185]

Answer:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

The domain represents the x-values

The range represents the y-values

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8 0
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Tell whether the angles are complementary or supplementary. Then find the value of x.
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Answer:

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Step-by-step explanation:

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