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Andrew [12]
3 years ago
13

Math help will give brainliest what is X and M angle A

Mathematics
1 answer:
Anna [14]3 years ago
3 0
Supplementary = 180 degrees...

A + B = 180

3x + 12 + 7x + 38 = 180

10x + 50 = 180

10 x = 130

x = 13 

To find the A just substitute x in...

 
3 ( 13) + 12  

A = 51

To check substitute the x..

A + B = 180

3(13) + 12 + 7(13) + 38 = 180
        51 + 129 = 180
            180 = 180
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How much interest will she earn in 3 years?
alekssr [168]
For this, the equation is 
90× 1.13³=y
X was replaced with y. Since she is gaining, you have to remember she is going to have 100 percent of what he had before, she will not lose any.
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Now, we need to find the amount of interest she gained, so we have to subtract 90 from the total.
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We can also find the answer by completing a small chart.
The first column will be the year. The second will be the amount. The third will be the interest for the year.
1                                                90                                                11.7
2                                                101.7                                           13.22
3                                                 114.92                                        14.94
The total would round to 39.86, so her interest for the 3 year would be 39.86, with her having 129.86 altogether.




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3 years ago
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