Choose the conditional statement that can be used with its converse to form the following biconditional statement: "an angle is a right angle if and only if it measures 90 degrees." a. if a right angle measures 90 degrees, then it is a right angle. b. if an angle does not measure 90 degrees, then it is not a right angle. c. if an angle is not a right angle, then it does not measure 90 degrees. d. if an angle is a right angle, then it measures 90 degrees.

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.