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anastassius [24]
3 years ago
6

Please please please answer!!!

Mathematics
2 answers:
Llana [10]3 years ago
7 0

that is confusing i have no idea

levacccp [35]3 years ago
4 0

Two angles are complementary if they add up to 90 degrees.  The angels of 2x degrees and (30 - 5x) degrees are complementary thus the following equation is 2x + (30 - 5x) = 90

Hope this helps!  :)


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It's a simultaneous equation:
Steps:
1.Number the equations..

a+b=77 -1
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2. Choose what variable you want to use. In this case I would use the "b". Since the signs in front of the "b's" are different, add the two equations together

a + b = 77
+ + +
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Which gives;
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Then solve to find a:
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3.Then plug the "a" value into any of the original equations to find the "b" value. I would use equation 1 since the all the variables are positive.

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(45) + b = 77
b=77-45
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4.Solution

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