Please help thank you. Solve the following equation algebraically:
x^2 = 20
a. 4.47
b. 3.97, 3.97
c. -10, 10
d. -4.47, 4.47

Please select the best answer from the choices provided

If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

Karen will divide her garden into equal parts. she will plant corn in 8/12 of the garden. what is the lowest number of parts she can divide her garden into?