Hurry please! Write each biconditional as a conditional and its converse. Then determine whether

the biconditional is true or false. If false, give a counterexample.

1. Two angles are complements if and only if their measures have a sum of 90.

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

a

step-by-step explanation:

strong negative correlation

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.

step-by-step explanation: