The amount of work (or the rate) done by the first person is 1/21
r = 1/21
Answer:
yes
Step-by-step explanation:
Answer:
9 = x (assuming 15 is the hypotenuse)
Step-by-step explanation:
15^2 = 12^2 + x^2
225 = 144 + x^2
subtract 144 from both sides
81 = x^2
square root both sides
9 = x
7*122 = 854
5*68 = 340
854 + 340 = 1294, closest to 1200.
Answer B is correct.