Ustin weighs 15 pounds less than greg weighs. half of greg's weight is 75 pounds less than justin's weight. how much does each of them weigh? a. greg weighs 200 pounds, and justin weighs 185 pounds. b. greg weighs 190 pounds, and justin weighs 175 pounds. c. greg weighs 180 pounds, and justin weighs 165 pounds. d. greg weighs 170 pounds, and justin weighs 155 pounds.

answer:

80 degrees

step-by-step explanation:

to start, use the fact that the largest angle is the opposite of the longest side. now, use the law of cosines (a^2 = b^2 + c^2 - 2bc cos a), where a is the longest side and a is its opposite, and b and c are the other sides. plug the values in to get 1681 = 1962 - 1638 cos a, or cos a = 281 / 1638. now, use a calculator to get that a is approximately 80.12 degrees, or 80 degrees.

answer:

the length is 0.83

step-by-step explanation:

answer:

b im pretty sure

step-by-step explanation: