To control an infection, a doctor recommends that a patient who weighs 92 pounds be given 320 milligrams of antibiotic. If the antibiotic is given proportionally according to the patients weight, how much antibiotic should be given to a patient who weighs 138 pounds?

Hello!

To control an infection, a doctor recommends that a patient who weighs 92 pounds be given 320 milligrams of antibiotic. If the antibiotic is given proportionally according to the patients weight, how much antibiotic should be given to a patient who weighs 138 pounds?

Weighs ........ milligrams

92 -------------- 320

138 ------------- X

multiply the means by the extremes

92*x = 320*138

92x = 44160

x = 44160/92

x = 480  

b) 480 milligrams

________________________

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75

mean, 40.6

step-by-step explanation: