0.59
59/100 is written 0.59 in decimal form
In order to add, both numbers should have the same denominator:100
denominator is the number below the the line in a common factor, in other word the divisor. 5/10 is the same as 50/100(just multiply both numerator and denominator by 10)
So we want to use the Pythagorean a^2 + b^2 = c^2
The answer is explained in photo. B
The point 0,-7 C , is not a solution
times by a on both sides
a(a+8)= -5
expand brackets
a^2 + 8a = -5
minus 5 on both sides to set equal to 0
a^2 + 8a -5 = 0
use quadratic formula to get 2 solutions
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type into calculator. one solution from + other from -