84/10 (Thats the fraction of 8.4)
<u>42 </u> = 8.40000
5
Sami is 9 inches taller than his sister
Hope this helps.
The answer is C.
x^2 + z = 103x^2 + 22 = 103*Subtract both sides by 22*x^2 + 22 - 22 = 103 - 22x^2 = 81*square root both sides to find x*√x^2 = <span>√81</span>
<span>x = +- 9</span>
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