Find the sum: 9y2 + 7y2

Tina decides to measure how the amount of force (in newtons) that concrete can withstand changes as the surface area over which the force is spread out increases. What would be an appropriate unit for Tina's purpose?

A cheese maker changes the temperature of her milk at a rate of negative - 2 F Per minute what is the change in the temperature of the milk after 25 minutes

Which statement describes how phase changes can be diagrammed as a substance is heated? A. The phase is on the y-axis and the temperature is on the x-axis. B. The temperature is on the y-axis and the phase is on the x-axis. C.

many trees have concentric rings that can be counted to determine the trees age. each ring represents one years growth. a maple tree with a diameter of 12 inches has 32 rings.

How many microseconds are in one second?

How many milliliters of olive oil (D=0.92 g/mL) have the same mass as 1.80 L of gasoline (D=.74 g/mL)

Leo's family keeps recyclables in a cylindrical trash can. Today Leo bought a larger can with a radius and height that are twice the radius and height of the old can. Leo claims the new and old cans are geometrically similar figures.

The value of Maggie's car decreased by 30% since last year, when she bought it. If the car is now worth $17,000.00, how much was the car worth when she bought it?

The base of a rectangle has a length of 4 inches and a diagonal has a length of 5 inches, Find the area of the rectangle

A ball is thrown from an initial height of 7 feet with an initial upward velocity of 28/fts. The ball's height h (in feet) after t seconds is given by the following. = h+7-28t16t2 Find all values of t for which the ball's height is 15 feet.