The speed of light is about 3x10^8 m/s what is the speed of light in kilometers per hour

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?

Find the missing factor. write your answer inexponential form.9^2=9^4×

Jane has 5 nickels.john has 3 dimes.jane says she has a greater amount of money.with the information given,is she correct?