3 years ago

N item is regularly priced at $39. Chang bought it on sale for 15% off the regular price.

Mathematics

1 answer:

blagie [28]3 years ago

3 0

Answer:

The price would be $33.15

Step-by-step explanation:

Hope this helps! <3

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A classroom has 2 bookcases that weigh 117 pounds altogether. If they all weigh the same amount, how much does each bookcase wei

Lapatulllka [165]

Answer:

58.5 pounds each.

Step-by-step explanation:

If two bookcases weigh 117 pounds and each weighs the same amount, each bookcase must weigh half of the total weight. 117/2 equals 58.5.

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What is the measure of AC?

Firlakuza [10]

Answer:

AC = 52.8

Step-by-step explanation:

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12*1.65 = 19.8

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**A rock dropped from a 100 foot tower.

mars1129 [50]

Answer:

2.83 s

Step-by-step explanation:

We are given that

$h(t)=-16t^2+10t+100$

When a rock reached the ground then h(t)=0

$-16t^2+10t+100=0$

$16t^2-10t-100=0$

Using quadratic formula

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$t=\frac{10\pm\sqrt{(-10)^2-4\times 16\times (-100)}}{2(16)}$

$t=\frac{10\pm\sqrt{100+6400}}{32}$

$t=\frac{10+\sqrt{6500}}{32}=2.83$

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Hence, the rock takes 2.83 sec to reach the ground.

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3 years ago

Please help this is due in tomorrow!!

Nataly_w [17]

Answer:it would be 15cm^2 I think

Step-by-step explanation:

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3 years ago

Which function is negative for the interval (–1, 1]?

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