The Peachtree Road Race is a 10-kilometer run held annually in Atlanta, Georgia. How many meters long is this run? (1 km = 1000 m)

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Which of these angles are supplementary? a. 100o and 90o b. 78o and 102o c. 54o and 146o d. 12o and 78o