My sister is 12 years old. My brother says that his age minus twelve is equal to my sister's age. How old is my brother? Enter an equation, using as your variable, to find how old my brother is.

The equation is

Question 6 (10 points) ✓ saved what is the center of a circle described by the equation x2 + y2 +10y = -16? . (0,-5) (0,5) (-5,0) (5,0)

How do you answer this question? (step by step)

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)?