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AfilCa [17]
3 years ago
10

I'll give you 5 stars if you answer my question!

Mathematics
2 answers:
Aleks04 [339]3 years ago
8 0
Hello,


5*(-3)=-15
(-15)*(-3)=45
45*(-3)=-135
(-135)*(-3)=405
405*(-3)=-1215
(-1215)*(-3)=3645

Answer C
Oksanka [162]3 years ago
3 0
5*(-3)=-15

(-15)*(-3)=45

45*(-3)=-135

(-135)*(-3)=405

405*(-3)=-1215

<span>(-1215)*(-3)=3645

(There you go)</span>
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Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side the area of the smaller
horsena [70]

Answer: 20 feet by 20 feet.


Step-by-step explanation:

1. You know that x is the original measure of one side. Since it is a square, all its sides are equal.

2. Therefore, to solve the problem you only need to solve for x, as you can see below:

- You have that:

(a-b)^{2}=a^{2}-2ab+b^{2}

- Then, you obtain the following quadratic equation:

(x-8)^{2} =144\\x^{2}-2(x)(8)+8^{2}=144\\x^{2}-16x-80=0

- Apply the Quadratic formula to solve it:

x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}\\a=1\\b=-16\\c=-80

- Then, you obtain:

x_1=20\\x_2=-4

3. The dimensions cannot be negative, therefore, the answer is: 20 feet by 20 feet.


3 0
4 years ago
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almond37 [142]

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3 years ago
I feel like I’m missing something simple. Please help explain?
wariber [46]

You're dividing where you need to multiply. The intersecting chord theorem says

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X=15
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