What is 1+1?

I don't know

(Super Easy Question)

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?