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sladkih [1.3K]
3 years ago
7

the length of a rectangle is three times its width. If the perimeter is 80, what are the dimensions of the rectangle

Mathematics
1 answer:
Lady_Fox [76]3 years ago
3 0
8 by 10 because 8 times 10 is 80 sorry if it’s incorrect
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A rectangular countertop has a perimeter of 26 feet. its area is 30 square feet. what are the dimensions of the counter?
Sladkaya [172]
P=26=2*(l+L)
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4 0
3 years ago
Teresas restraunt bill comes to $29.99 before tax. If the sales tax is 6.25% and she tips the waiter 20%. What is the total cost
alisha [4.7K]

Answer:

$37.86

Step-by-step explanation:

Multiply 29.99 by 0.0625 to get the sales tax

29.99x0.0625=1.87

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29.99+1.87=31.86

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3 0
3 years ago
Which expression is equivalent to x^4 - 12x^2 + 36?
QveST [7]
So the answer is
(<span>x^2 plus or minus 6)(x^2 plus or minus 6)
an easy way to do this is to only look at plus or minus 6
x^4 <u><em>- 12</em></u>x^2 + <u><em>36   (-12 and 36)
</em></u><em />

<u><em /></u>6 x 6 = 36
<em />6 + 6 </span>≠ -12              (x^2 + 6)(x^2 + 6) is incorrect        
<span><u><em>
</em></u><em><u /></em><u />
6 x -6 </span>≠ 36
<span><em />6 + -6 </span>≠ -12             (x^2 - 6)(x^2 + 6) is incorrect
<span><em /><em>
</em><em />-6 x -6 = 36
<em />-6 + -6 = -12         </span><span>(x^2 - 6)(x^2 - 6) is correct
</span><u><em>
the answer is (1)

</em></u>
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C.  (10x3)10 - (27.5x2)10 = 0
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