Answer:
BC=3root7
CD=root58
Step-by-step explanation:
According to Pythagorean theorem, in a right triangle,a^2+b^2=c^2. a, b are two legs of right triangle. Cis the hypotenuse
12^2-9^2=63
BC=root63=3root7
BD^2-BC^2=CD^2
121-63=CD^2
CD=root58
if you do a number line it = 39
92+65=157
157-14=143
Answer is 143
hope this helps:)
Answer:
b
Step-by-step explanation:
absoulute value is never negative.