Find the equation of a parabola with focus F(-10, -12) and directrix y = -4.
A. y = –16(x + 10)2 – 8
B. y = -8(x + 10)2 - 8
C. y = -(x + 10)2 - 8
D. y = -fokos + 10)2 – 8

The ratio of wooden bats to metal bats in the baseball coach’s bag is 2 to 1. if there are 20 wooden bats, how many metal bats are in the bag?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

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