Answer:
search up-area of circle formula and circumference of a circle formula
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
easy question, 3x9=27
You might have to do the quadratic formula
D = k + 20
j = 3k - 120
d = j
k + 20 = 3k - 120
20 + 120 = 3k - k
140 = 2k
140/2 = k
70 = k.....so Katie weighs 70 lbs
David and Johnathan each weigh 90 lbs
