Step-by-step explanation:
48/4+[6+{12/2 of 3}-4]+20
48/4+[6+18-4]+20
12+20+20
52
To solve a square root, get the ^2 on one side and the 81 on the other side.
add 81 to both sides.
c^2 = 81
to clear the power of 2, take the square root of both sides.
c = + - sqrt81
c = + - 9
c = 9 and c = -9
<span><span>If you want to evaluate what
is 10 percent of 400, you
can do this using the following few steps:</span><span>
10% * 400 = 10/100 * 400 = 0.1 * 400 = 40
<span>10% of 400 is 40.</span></span></span>
It's B, and being mental won' help when having a calculator next to you) It's B for sure!!!
The answer (im pretty sure) is: 10 2/5
