Please help!! In the diagram below of triangle ABC, D is a midpoint of AB and E is a midpoint
of BC. If DE = 9x - 20, and AC = 5x + 12, what is the measure of AC?

Will give brainliestbased on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m?

Answer asap! urgent! will give brainliest!

Maria heard on the radio that the high temperature that day would be to determine the temperature in degrees celsius, she used the formula , where c is the temperature in degrees celsius and f is the temperature in degrees fahrenheit.