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VLD [36.1K]
2 years ago
10

Find the product of the binomials. (a +1) and (a -1)

Mathematics
1 answer:
yan [13]2 years ago
6 0

Answer:

a^2-1

Step-by-step explanation:

(a+1)(a-1)

=a^2-1

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The equation y = 13x describes the amount of money Sarah earns, where x is the number of hours she works
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Answer:

A) $14/hr B) Austin

Step-by-step explanation:

A)

If he earns $140 in 10 hours you can divide 140 by 10 to find out how much he makes per hour

B)

Sarah makes $13/hr which is $1 less than Austin

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3 years ago
Write 7x10^-8 in standard form
attashe74 [19]

Answer:

The answer would be 0.00000007

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3 years ago
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chelsea and shawna are selling cheesecakes for a school fundraiser. customers can buy french silk cheesecakes and apple cheeseca
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Answer:

Shawna price went up by 12 dollars because of 2 extra french silks. I divides 12 by 2 and got 6 dollars.I subtracted 12 dollars from 20 and divides the rest by 3 and got 2.66$

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6 0
3 years ago
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7 0
3 years ago
A gutter at the edge of a roof drops 2 inches for every 30 feet of length. The measure of the angle to the nearest tenth of a de
g100num [7]
About 0.3 degrees, by estimation.  
The sixty-to-one rule is useful here.  At a distance of 60 units, the angle in degrees and the distance (in units) are about equal for small angles.  
Thirty to two inches is the same as sixty to four inches, about a third of a foot, so the angle must be about a third of a degree.  Rounded it gives 0.3.  
My horribly antiquated TI-82 thinks the answer is about 0.3183 by this methodtan−1(1/180)≈0.3183
8 0
3 years ago
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