3 years ago

Please help if you can ty!!

Mathematics

1 answer:

Slav-nsk [51]3 years ago

6 0

To travel 13 mph it would take roughly 8.2 minutes !

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mamaluj [8]

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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:

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

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

- Then, you obtain:

$x_1=20\\x_2=-4$

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

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3 years ago

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ivann1987 [24]

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Step-by-step explanation:

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3 years ago

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ziro4ka [17]

<h2>Answer: $x=\frac{325}{9}$ </h2>

Step-by-step explanation:

Cross-multiply.
Divide both sides by 9.

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