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allochka39001 [22]
3 years ago
11

Solve for a.

Mathematics
2 answers:
masya89 [10]3 years ago
5 0
A + (-7) is the same as a - 7, so you could rewrite it as
a - 7 = -17
+ 7
a = -10
So your answer is a = -10, I hope this helps!
alina1380 [7]3 years ago
5 0

Answer:

-10

Step-by-step explanation:

just took the test

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3 years ago
HELP ME PLZZZZ!!!!!<br><br><br> It’s just 21 and 22
galina1969 [7]

Answer:

21) 12 cm

22) 5.9 cm

Step-by-step explanation:

21) The base is 10, and if the other two sides are congruent and the perimeter is 36, we can figure out with simple algebra that the sides are 13 cm long.

Half of 10 is 5, so we can use the pythagorean theorem.

5^2+x^2=13^2

Rearranging the variables we have 169-25=x^2

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x can be plus or minus 12, but since negative length is impossible we find that x is positive 12 cm.

22) We want to use sine, because we have opposite and hypotenuse. A simple and easy way to memorize this is the SohCahToa method. If we have opposite (O) and hypotenuse (H) we have OH. Soh has the letters O and H, and the S means we should use sine.

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7 0
3 years ago
Mathematics and body temperature? Please answer the questions in 3.
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Answer:

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3 0
3 years ago
Find the area of the region that is inside the square and outside the circle. The circle has a diameter of 8 inches. Round to th
raketka [301]

Answer: 13.7 in²

<u>Step-by-step explanation:</u>

Area of Square:

A = s²

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  = 64

Area of Circle:

A = π r²

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Area of Square - Area of Circle:

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5 0
3 years ago
A car dealership decreased the price of a certain car by 4% . The original price was $43,600 . write the new price in terms of t
defon

Answer: The new price of  the car is $41856

Step-by-step explanation:

So we know the the original price as 43,600 which is 100% and is being dropped by 4%  so you would have to subtract 4% from a 100% and multiply it by the original price.

100% - 4% = 96%

Now 96% of the original price is the new price.

96% * 43,600= ?

0.96 * 43,600 = 41856

6 0
3 years ago
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