24. Madison spent $1,192 on 11 textbooks
Without dividing, decide what the average cost
of Madison's textbook would be?

$109

Step-by-step explanation:

With mental math, we can find that 1100/11 is 100 this gives us the first half of the answer. The second part we can conclude is 9 because we know that 99/11 is 9. Because we are not dividing to get an exact answer, we must round up our divisor by 7 so can get to the next whole number. Hope this helps!

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )