Which expression is equivalent to 4.2a−2(0.4a−1.3) answer choices
3.4a+2.6
3.4a−1.3
3.4a+1.3
3.4a−2.6

please give an explanation!

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)

Select all the expressions that will include a remainder.

What is the answer to the question 5x+2x