I guess since you have the correct answer there that you need to know how to get it. Start by rewriting that exponent as a radical. It would look like this: . The first step is to undo that square root by squaring both sides. That will give you this:
. Next we have to undo that cubing by taking the cubed root of both sides, leaving us with this:
. We add 8 to both sides to get 8x = 24 and x = 3.
Find the radius r of the circle. Round your answer to the nearest tenth.
1 answer:
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To make a square for x²+bx=c, add( 
)²on both side
in this case, b is-3/4, half of b is -3/8, and (-3/8)² is 9/64, so you add 9/64 to both side.
in this case, b is-3/4, half of b is -3/8, and (-3/8)² is 9/64, so you add 9/64 to both side.