Asked by A

solve the square root of 2a-1 is equal to 5

solve c- the square root of c is equal to 30
Answered by MathMate
a.
2a-1 = 5
Add one to each side:
2a -1+1 = 5+1
2a = 6
a = 6/2 = 3

b.
√c = 30
square both sides
c = 30^2 = 900
Answered by A
for the first question it's the square root of 2a -1 not just 2a -1

and for the second question its c- the square root of c = 30 not just the square root of c = 30
Answered by MathMate
Sorry, here it is, square both side before working on it:

√(2a-1) = 5
square both sides:
2a-1 = 25
Add one to each side:
2a -1+1 = 25+1
2a = 26
a = 26/2 = 13
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