Pls answer this...its very important for me...i have an exam coming up...and this 2 questions will come up so pls help. I WILL MARK AS BRAINLIEST WHOEVER ANSWERED RIGHT. 1. Find the value of x
a)
b)

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2