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Snezhnost [94]
3 years ago
11

lisa sold 81 magazine subscriptions which is was 27% of her class fundraising goal.how many magazine subscripitons does her clas

s hope to cell
Mathematics
1 answer:
hodyreva [135]3 years ago
7 0
Set up a proportion.

27% = 0.27

81/0.27 = x/1

Multiply 1 to both sides:

x = (81 * 1)/0.27

Multiply:

x = 81/0.27

Divide:

x = 300

So they hope to sell 300 magazine subscriptions.
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Read 2 more answers
Given ABC find the values of x and y. In your final answer, include all of your calculations.
kow [346]

So with this, we will be using proportions. To solve for x, our proportion will be \frac{x}{6} =\frac{6}{x-9}


Firstly, cross-multiply: x^2-9x=36


Next, subtract 36 on both sides: x^2-9x-36=0


Next, replace -9x with 3x-12x x^2+3x-12x-36=0


Next, factor x^2+3x and -12x-36 separately: x(x+3)-12(x+3)=0 . After, rewrite it as (x-12)(x+3)=0


Next, solve for x separately in the two parentheses:

x-12=0\\ x=12

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Since we can't have a negative length, x = 12.



To solve for y, our proportion will be \frac{y}{9} =\frac{12}{y}


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In short, x = 12 and y = 10.39.

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