(07.01 MC) If the sin 90° is 1, then the cos _°= _. (4 points)

a. 90°; 1/2
b. 0°; square root of 2 over 2
c. 90°; square root of 3 over 2
d. 0°; 1

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet