note2sethw note2sethw

02-01-2019
Mathematics

contestada

mary goes running each day. in 3 hours she runs a total of 7 miles. how many miles does she run in 1 hour

Respuesta :

offguard offguard

02-01-2019

Simply set up a proportion: hours/miles=hours/miles

3/7=1/x.

Cross multiply to get 3x=7. Divide by 3 to get 7/3.

Therefore, Mary runs 7/3 miles in an hour.

Answer Link

Otras preguntas

Using pairs of opposites, such as Helena and Hermia, is called A. doubling. B. foreshadowing. C. irony. D. realism.

Earth's greenhouse effect is most directly related to the _____ cycle. a. argon b. carbon c. oxygen d. nitrogen

ian has 12.2 ounces of ketchup he uses 1/20 of the ketchup every time he has buafflo burger how many ounces of ketchup are left after ian has eaten 4 burgers

A star at the end of its life-cycle, composed of mostly carbon, is a A. nova. B. giant. C. red dwarf. D. white dwarf.

Which is not one of the four strategies writers use to create coherence? a. synonyms b. description c. pronouns d. transitions

Which of the following is NOT a function of proteins? A. store and transmit genetic information B. help to fight disease C. control the rate of reactions D.

Which is not one of the four strategies writers use to create coherence? a. synonyms b. description c. pronouns d. transitions

Which of the following is true? A. Some levels of tobacco use are safe. B. Some tobacco products do not cause cancer. C. All forms of tobacco are addictive.

The reciprocal of a fraction less than 1 is always a fraction greater than 1. Why is this?

What is the role of DNA helicase during DNA replication?