Giải hệ ( toán cao cấp ) x + 3y - z + 2t = 0

2x + 7y - z + 2t = -3

-3x - 7y + 6z - 12t = -4

-x - 2y + 5z - 11t = -1

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay

How many ordered pairs of positive integers satisfy xy=32?

Astudent has created the give circuit diagram. it consists of a battery, a resistor, and a light bulb. in one minute, 1.2c of charge flows through the resistor. how much charge flows through the light bulb in one minute?