Use the substitution method to solve the system of equations. x + y = 20 30x + 25y = 550

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

The table below shows the approximate height of an object x seconds after the object was dropped. the function h(x)= -16x^2 +100 models the data in the table. for which value of x would this model make it the least sense to use? a. -2.75 b. 0.25 c. 1.75 d. 2.25

Which shows a reasonable estimation for 124% of 42 using the distributive property?