Use the formula a2 – b2 = (a + b)(a – b) to factor completely. what are the factors of 36x8 – 49? a. (9x4 – 1)(4x2 + 49) b. (36x4 – 7)(x2 + 7) c. (6x4 – 7)(6x4 + 7 d. (6x8 – 7)(6x + 7)

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?