If you are making a complementary angle and one angle is 70 degrees. What must the other angle measure?

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27