using the law of cosines:
a^2 = b^2 + c^2 - 2*b*c*cos(A)
a = 90, b = 55, c = 50
90^2 = 55^2 + 50^2 - 2*55*50*cos(A)
8100 = 3025 + 2500 - 5500 * cos(A)
5500 * cos(A) = 3025 + 2500 - 8100
5500 * cos(A) = -2575
cos(A) = -103/220
A = arccos(-103/220)
A = 117.9 degrees
So we have 0.1777777...
let x=0.1777...
then 100x=17.7777 and 10x=1.7777 upon subtraction of the 10x from 100x you get:
100x-10x=17.777-1.777
90x=16
x=16/90
x=8/45
<h3>Step-by-step explanation:</h3><h3>8( x + 7) = - 24</h3><h3>x + 7 = - 24 / 8</h3><h3>x + 7 = - 3</h3><h3>x = - 3 - 7</h3><h3>x = - 10</h3>
<h2>
Answer: </h2><h2>
Mohammed's net pay each week is $298.90 (61%).</h2>
Step-by-step explanation:
- 15% + 8% + 9% + 7% = 39%
- 39% - 100% = 61%
- $490 x 61% = $298.90
<h2> </h2>
<h2> <u><em>
The answer is 61%.</em></u></h2><h3><u><em>
The exact cash amount is $298.90 </em></u></h3>
Answer:
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Step-by-step explanation:
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