Which of the following is a perfect square trinomial?
a) 4x^2+20xy-25y^2
b) 4x^2+14xy-25y^2
c) 4x^2-14xy+25y^2
d)4x^2-20+25y^2

Write two subtraction equations that are equivalent to 5 + 12 = 17.

In a probability experiment, karen flipped a coin 76 times. the coin landed on heads 32 times. what percentage of the coin flips resulted in tails? round to the nearest percent. a. 58% b. 65% c. 42% d. 60%

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy. how much will she pay after the discount