3 years ago

Which expression converts 100 inches per minute to feel per minute

1 answer:

6 0

You only have to convert inches to feet by dividing by 12: 100in/min (1/12 ft/in) = 100/12 ft/min = 25/3 ft/min.

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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.

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4 years ago

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Solve for z:2^3z+9=8^2z+1

Anika [276]

Answer:

Hope this helps

Step-by-step explanation:

4 0

3 years ago

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One way to compute a 15% tip for a bill is to multiply the bill by 0.15. A restaurant bill was $42.40. Calculate the tip. Enter

Andreyy89

Answer:6.36

Step-by-step explanation:

Multiply the bill($42.40) by 0.15

8 0

3 years ago

Is 3/5 and 6/8 proportional

balandron [24]

3/5 and 6/8 are not proportional as even though 3 goes into 6 evenly, 5 does not go into 8 evenly so that makes it disproportional.

3 0

4 years ago

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0.5 + 6.38= 6.9 because 0.5 is precise to the tenth digit, so the answer must also be rounded to the nearest tenth.

mylen [45]

Answer:

False

Step-by-step explanation:

0.5 + 6.38= 6.88

In general you'd round your answer to the greatest level of precision used in the question, not the least.

5 0

4 years ago