amandamiro05 amandamiro05
  • 03-02-2019
  • Mathematics
contestada

two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Respuesta :

prosborough198p2ub41
prosborough198p2ub41 prosborough198p2ub41
  • 03-02-2019
2x+3y=4
x=2-3/2y

3x+4y=7

3(2-3/2y)+4y=7
6-9/2y+4y=7
-1/2y=1
y=-2

3x+4(-2)=7
3x=15
x=5

So the two numbers are 5 and -2

Answer Link

Otras preguntas

In which system of government would states function independently of each other?
_______ is the largest continental biome. It experiences long, cold winters; short, mild summers; and low precipitation. It is characterized by coniferous fore
PLEASE HELP I GIVE THANKS
Which is the best description of civil liberties? A. natural rights B. privileges C. rights guaranteed by law D. democratic goals E. trial procedures
Which word has the long e sound? a. client b. inferior c. beautiful d. poetic
3+1/4x greater than 11
How many years does an apple tree live useful?
Sophia bought 3 yards of trim to put around a rectangular scarf. She wants the width of the scarf to be a whole number that is at least 6 inches and at most 12
What is the primary purpose of the Supremacy Clause?
A flatbed truck is loaded 7,000 pounds of bricks. How many tons of bricks are on the truck?