briannakern18 briannakern18
  • 02-11-2018
  • Mathematics
contestada

-22.5-7r=9.5 (2.5r+4)

Respuesta :

gmany
gmany gmany
  • 02-11-2018

[tex]-22.5-7r=9.5(2.5r+4)\qquad|\text{use distributive property}\\\\-22.5-7r=(9.5)(2.5r)+(9.5)(4)\\\\-22.5-7r=23.75r+38\qquad|\text{add 22.5 to both sides}\\\\-7r=23.75r+60.5\qquad|\text{subtract 23.75r from both sides}\\\\-30.75r=60.5\qquad|\text{divide both sides by}\ -30.75\\\\r=-\dfrac{60.5}{30.75}\\\\r=-\dfrac{6050}{3075}\\\\r=-\dfrac{6050:25}{3075:25}\\\\r=-\dfrac{242}{123}[/tex]

Answer Link

Otras preguntas

One month, Jon worked 3 hours less than Chaya, and Amgelica worked 4 hours more than Chaya. Together they worked 196 hours. Find the number of hours each person
the unit cm3 is used to express .?
What does audacity means
Emily has clearly stated to her boyfriend that she doesn't want to have sex, and she has offered alternatives for sharing time together. Nevertheless, her boyfr
round each decimal to the nearest whole number 30.92
Why do cellular organelles have different structures
Malika charges $7.20 per hour for babysitting.she babysits 4 hours each week.she spends $10 per week and puts the rest of her earnings in a saving account.after
The weight of an object on the moon is 1/6 it's weight on Earth. Write 1/6 as a decimal.
Which place is home of the first known written code of law? a. Egypt b. Mesopotamia c. Both d. Neither
True or false The Federal Reserve Bank is responsible for minting new coins.