3/8 + 4/5 answer i have a test tommorow

47/40 or 1 7/40

Step-by-step explanation:  Cross multiply for the numerator and multiply the denominators for the denominator, so 3 * 5 + 4 *8/ 8*5

idk the answer but just put a

step-by-step explanation:

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