URGENT!! 70 students went on a field trip.
They took both cars and maxis
They use 7 vehicles altogether
Write 2 simultaneous equations
to model this info.

I have 1 equation which is c+m=7

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

step-by-step explanation:

i am only able to answer the first part. i am not sure about the second part. sorry