Can someone help me, if u can ty bless you.

What is not true about kl and mn? what is mn? (show your work)

What does x = in this equation x+3+2x=x+5

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)?