tyler5281 tyler5281

02-04-2018
Mathematics

contestada

The speed of a stream is 2 mph. A boat travels 7 miles upstream in the same time it takes to travel 11 miles downstream. What is the speed of the boat in still water?

Respuesta :

Smiley105 Smiley105

02-04-2018

4 = (r-2) t

8 = (r+2) t

4 = (r-2) * [8/(r+2)]

4 = (8r-16)/ (r+2) . . .multiply by 2

4r + 8 = 8r - 16

4r = 24

r = 6

Answer Link

Otras preguntas

The governor presides over the legislature. True False

Egypt is bordered by the Red Sea and the Mediterranean Sea. a. True b. False

in brown versus the Board of Education the Supreme Court overturned the prettiest woman in Plessy v ferguson that separate but equal was constitutional so long

Luis colors 1/4 of a spinner using a red crayon. write the fraction of the spinner Luis colored red in twelfths.

What is the mean of these groups of numbers? 1,1,5,3,6,6

By 1750, each colonial government had

the presidential election of 1973 resulted in a landslide victory for

I don't know what subject would fit this question: Mistakes made through laziness or negligence are mistakes made ______.

Why is biography important to art and literature?

The Texas revolution started when Mexico refused to allow settlers to own weapons