Which of the systems of equations below is equivalent to the system shown? 4x + 5y = 3
2x + 3y = 1
Ο Α.
4x + 5y = 3
- 4x - 5y = 2
ОВ.
12x + 15y = 9
- 12x + 18y = 6
O C.
4x + 5y = 3
- 4x - 3y = 1
OD.
12x + 15y = 9
- 12x - 18y = -6

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?

Common binomial factor of 6x(3x+7)+5(3x+7)