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maks197457 [2]
3 years ago
11

-1/5a+21=23 whats the answer

Mathematics
2 answers:
katrin [286]3 years ago
7 0
-a+105=115
-a= 115-110
-a=10
divide both sides by -1
answer : a=-10
sp2606 [1]3 years ago
6 0

Answer:

A =  -10

Step-by-step explanation:

Combine multiplied terms into a single fraction find common denominator etc etc.

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The value of side z will be equal to 99.32 cm.

<h3>What is trigonometry?</h3>

The branch of mathematics sets up a relationship between the sides and the angles of the right-angle triangle are termed trigonometry.

Given that:-

In ΔXYZ, x = 27 cm, y = 79 cm and ∠Z=142°

So by applying the formula given below:-

z²   =   x²  +  y²  -  2xyCos(142)

z²   =   79²  +   27²   -  2 ( 79 x 27  x  Cos142  )

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Hence the value of side z will be equal to 99.32 cm.

To know more about Trigonometry follow

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