3 years ago

I need help with three problems!!!!!

Mathematics

1 answer:

Marrrta [24]3 years ago

7 0

I hope this helps you

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The price of an item yesterday was $60. Today, the price fell to $42. Find the percentage decrease.

oksian1 [2.3K]

Answer:

-30% or 30% decrease

Step-by-step explanation:

What's percentage decrease?

Percent decrease is the difference between the initial value and new value, indicating a loss of value.
The formula to find percent decrease is $\frac{NV-IV}{IV} * 100$ , where NV = new value and IV = initial value.

How do we solve this problem?

We know that the original value was $60, so that represents IV. Also, now that the price is $42, it represents NV.
Now, we plug in the values!
$\frac{42-60}{60} * 100$
$\frac{-18}{60} * 100$
$-\frac{3}{10} * 100$
$-3 * 10$
$-30$

Therefore, the answer is 30% decrease.

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2 years ago

Help my friends y'all really are awesome

anyanavicka [17]

Answer:

Step-by-step explanation:

u multiply 9 x 9 not 9x2

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3 years ago

Suppose a computer virus begins by infecting 8 computers in the first hour after it is released. Each hour after that, each newl

Mila [183]

$y=8^x
\\x=1\Rightarrow y=8^1=8
\\x=2\Rightarrow y=8^2=64
\\x=3\Rightarrow y=8^3=512
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3 years ago

You roll a 6-sided die with faces numbered 1 through 6, and toss a coin. What is the probability of rolling a 2 or getting heads

valentina_108 [34]

That sounds like an extremely misleading question to me but it would be A since theres a 1/6 chance of getting a 2 on a die and there isnt a 1/2 in the answers so it is A

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3 years ago

Read 2 more answers

Which angles are right?

notka56 [123]

A & C are correct.

Reason - Forms 90°

See pic.

- Toodles!~

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2 years ago