Why is the square root of a perfect square always rational?

If an object is dropped from a height of 55 feet, the function d=-16t^2+55 gives the height of the object after t seconds. Graph this function. Approximately how long does it take the object to reach the ground (d=0) ?

A street light is at the top of a 12 ft tall pole. A woman 6 ft tall walks away from the pole with a speed of 5 ft/sec along a straight path. How fast is the tip of her shadow moving along the ground when she is 50 ft from the base of the pole?

A store's change in total revenue over a 4-month period is - $1,240. What is the average change in revenue per month for that period? -$4,960 -$310 $310 $4,960

Positive common factor (other than 1) of 9 and 6

Suppose you bought a 6 percent coupon bond one year ago for $920. The bond sells for $940 today. a) Assuming a $1000 face value, what was your total dollar return on this investment ove the past year b) What was you total nominal rate of return on

Janice bought juice packets for the 15 players on the soccer team. The juice packets come in boxes of 6. How many boxes did janice buy?

What are the domain and range of the function Rx) = 2x+1?

A pair of corresponding angles are described as it follows, the measure of one angle is five less than seven times a number and the measure of the other angle is eight more than seven times the number of the number. are the angles congruent?

Find the total volume of soil in the three planters. Planter A is 14 inches by 3 inches by 4 inches. Planter B is 9 inches by 3 inches by 3 inches. Planter C is 13 inches by 3 inches by 3 inches.

Which is the graph of f (x) = x2+3