dmdicarlo dmdicarlo
  • 12-09-2016
  • Mathematics
contestada

if 2s +10r = 2(2s-5r) = 42, then what is the value of r?

Respuesta :

xuchen xuchen
  • 12-09-2016
R=7/5
You can list two equations:
2s+10r=42 and 4s-10r=42.
Then try to delete S, you will get r
Answer Link

Otras preguntas

Jamaal buys his clothes at Super Discounts. On Saturday, he bought shoes regularly priced at $40 for 25% off, and a jacket regularly priced at $100 for 30% off.
how do you can you solve this problem 37 + y = 87; y =
how do you can you solve this problem 37 + y = 87; y =
rewrite the expression without using grouping symbols. -6(8+12)
Can water and pebbles form a solution?
You bought a car for $25,000. You have owned it for one year, and it is now worth $21,000. What is the percent decrease in your car's value?16%19%84%119%
what times what equal 16?
How did machines speed up  textile manufacturing
How did machines speed up  textile manufacturing
50 is 40% of what number?