bramdonquestionable bramdonquestionable

19-04-2017
Mathematics

contestada

Terry can run 15 miles in the same amount of time it takes Mark to run 21 miles. If Mark runs 2 mph faster than Terry, How fast does Mark run?

Respuesta :

crisforp crisforp

19-04-2017

We have the formulas 15 = v1 x t; 21 = v2 x t, where v1 is the velocity of Terry, v2 is the velocity of Mark and t is the time;
Then v2 = v1 + 2;
v2 x t = (v1 + 2) x t;
So, 21 = 15 + 2xt;
6 = 2xt;
t = 3h;
v1 = 5mph;
v2 = 7mph;

Answer Link

Otras preguntas

Identify the like terms. 2a, –2b, 2ab, –13ab A. 2a, –2b, 2ab B. 2ab, –13ab C. 2a, 2ab D. 2a, –2b

What advantage do computers give scientist as tools for investigations?

is this statement true or false the plants animals people and land in the eastern and western parts of North america are the same

Kendra and her horse completed barrel racing course in 15.839 seconds what is the number rounded to the nearest tenth

Two planes, which are 37403740 miles apart, fly toward each other. their speeds differ by 35mph35â¢mph. if they pass each other in 44 hours, what is the speed o

Which action is a critical part of listening

Select the object that has the most gravitational force. a sand grain a marble a bowling ball a tennis ball

The terms of the Treaty of Ghent

PLEASE HELP ASAP!!!! GIVING AWAY 14 POINTS SO PLEASE HELP!

1. Use the expression below to the answer the following questions: (8 points total) 4x – 7y + 3z - 10 a. Determine the constant. (2 points) Answer: b.