How many solutions does this linear system have? y = 2x - 5
DEE
-8x – 4y = -20
O one solution: (-2.5, 0)
one solution: (2.5, 0)
O no solution
O infinite number of solutions

Which of the choices shown could be used to prove that aacp=abcp ?

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95