A researcher wishes to examine the effects of a new reading program on students' literacy skills. The researcher plans to examine the effects on
students in a kindergarten classroom. What is wrong with this design?
Select all that apply.
O A. Only one grade level is described.
OB. A control group is not used.
O C. Randomization is not used.
O D. The entire population is not used.
SUBMIT

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.

Can anyone explain to me how to do this? anything will .