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2 years ago

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The price of a laptop computer decreased from 475 to 275. What is the percent of decrease in price

1 answer:

anyanavicka [17]2 years ago

8 0

First find the difference in prices...

475 - 275 = 200 so the price went down 200 dollars. No we need to find what percentage of 475 is 200.

475 × x = 200
x = 200/475
x = .4211

Now convert to percentage by multiplying by 100 (move decimal 2 places to the right)

.4211 = 42.11%

It is a 42.11% price reduction.

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2 years ago

Read 2 more answers

The following problem describes procedures that are to be applied to numbers. Repeat the procedure for four numbers of your choi

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Conjecture: For every number x, the result of the is 2x

Step-by-step explanation:

First Number: 8

Multiply by 88: $88 * 8 = 704$

Add 88: $704 + 88 = 792$

Divide by 44: $792/44 = 18$

Subtract 2: $18 - 2 = 16$

Second: 10

Multiply by 88: $88 * 10 = 880$

Add 88: $880+88=968$

Divide by 44: $968/44=22$

Subtract 2: $22-2=20$

Third: 5

Multiply by 88: $88*5 = 440$

Add 88: $440+88=528$

Divide by 44: $528/44=12$

Subtract 2: $12-2=10$

Fourth: 2

Multiply by 88: $88*2=176$

Add 88: $176+88=264$

Divide by 44: $264/44=6$

Subtract 2: $6-2=4$

On a general terms:

Let the number be x.

Multiply by 88: $88x$

Add 88: $88x + 88$

Divide by 44: $\frac{88x + 88}{44} = \frac{88x}{44} + \frac{88}{44} = 2x+2$

Subtract 2: $2x + 2 - 2 = 2x$

Notice that for every input x, the result is 2x

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2 years ago