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Alexxandr [17]
3 years ago
12

Jessica is shopping for a sweater the one she wants is 30%off she estimated the sale price by multiplying the original price by

0.7 why will it work
Mathematics
1 answer:
Butoxors [25]3 years ago
8 0
Multiplying 0.7 by the original price will work...

If you divide the cost by 100, subtract 30 from 100, you will be left with 70% times the 1/100
70% is also expressed as 0.7, since 7/10=70/100

Hope this helps!

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20 points!! Please Help!
Galina-37 [17]

Answer:

• x = 9

• y = 6√2

Step-by-step explanation:

The right triangles are all similar, so the ratios of hypotenuse to short side are the same:

27/x = x/3

x^2 = 81 . . . . . multiply by 3x

x = 9 . . . . . . . . take the square root

Then y can be found from the Pythagorean theorem:

x^2 = y^2 + 3^2

81 - 9 = y^2 = 72 . . . . . subtract 9

y = √72 = 6√2 . . . . . . .take the square root

The values of x and y are 9 and 6√2, respectively.

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3 years ago
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MrMuchimi
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<span>Total Surface Area: </span>
<span>(add to the above) </span>
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3 years ago
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Answer:

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Step-by-step explanation:

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What is the solution of log3x −725 = 2?<br><br> x = −2<br><br> x = 2<br><br> x = 3<br><br> x = 4
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Answer:

A

Step-by-step explanation:

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