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Andrew [12]
3 years ago
13

83. Martina had $231. She spent 3/7 of her money on new

Mathematics
1 answer:
mel-nik [20]3 years ago
8 0
She spent 3/7 of 231 on clothes. So she spent (3/7)*231 = $99

Now she has 231-99 = $132 left

She spent (2/3) of 132 on shoes and purse. So she spent (2/3)*132 = $88

At the end she has 132-88 = $44 left
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Need some math help!!! <br> Factor the polynomial by grouping: 12p^3 − 21 p^2 + 28p − 49
Andru [333]

Answer:

\left(4p-7\right)\left(3p^2+7\right)

Step-by-step explanation:

12p^3-21p^2+28p-49

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Alexxx [7]

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3 0
3 years ago
two angles are supplementary one angle measures 75% more than twice the measure of the other what are the measurement of the two
valkas [14]
Let's call the angles x and y. We know that supplementary angles must add to 180 degrees, so x+y=180.

Furthermore, we know that x is 75% more than 2y. We can write "75% more than" numerically as 1.75, so x = 1.75(2y).

We can simplify the second equation by multiplying 1.75 and 2 together to get x = 3.5y.

Now we can solve the system of equations by substitution by plugging 3.5y in for x in x+y=180.

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Combine like terms.

4.5y = 180

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Plug y = 40 in and solve for x.

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The answer is 40 and 140. Hope this helps :)
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2 years ago
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