Which expression is equivalent to 4(42)? select each correct answer a. 4(40 + 2) b. 4(20 + 22) c. 4(4 + 20) d. 4(4 + 2)

By the PEMDAS rule, as long as the stuff inside the parentheses add up to 42, it would be correct. Therefore:

A. Correct because 40 + 2 = 42

B. Correct because 20 + 22 = 42

C. Incorrect because 4 + 20 = 24 ≠ 42

D. Incorrect, because 4 + 2 = 6 ≠ 42

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.