Are these right?
81 + b2 = 225
Subtract 81 from both sides
b2 = 144
b = √144
b = 12
~~~~~~~~~~~~~~~~~
52 + 122 = c2
25 + 144 = c2
Subtract 25 from both sides
c2 = 119
c 2= √119
c =59.5
~~~~~~~~~~~~
a2+7(2)=10(2)
a2+49=100
Subtract 49 from both sides
a2 = 51
a2= √51
A = 25.5
Answer:
Work backwards to check your answers.
Your said that b2 is 144. Well is 95+144 equal to 152? If it is, your answer is right. If it isn't, your answer is incorrect. Is 81+144 equal to 225?
That's how you can check your answers. ;)
I would post this in homework help. Good luck
ummmmmmmmmmmmmmmmm...... thanx 2 points
im,13 i havent learned that
post this in homework help. and no they are not right when u have the variable and a number such as 2x. that means u divide 2 from each side, not find the square root
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