vizhnay9615 vizhnay9615
  • 01-12-2020
  • Mathematics
contestada

Solve the system by elimination. . 4x-9y=-21 , -4x-3y=9

Respuesta :

Emersoncushing
Emersoncushing Emersoncushing
  • 01-12-2020
(-3, 1)
4x-9y=-21
+-4x-3y=9
-12y= -12
y=1

4x- 9(1)= -21
4x-9=-21
+9 +9
4x= -12
x=-3
Answer Link

Otras preguntas

A student bought 34 pencils for school. If he sharpened 16 of the pencils before school, what is his ratio of unsharpened pencils to sharpened pencils?
What is the smallest of 3 consecutive positive integers if the product of the smaller two integers is 5 less than 5 times the largest integer? Please explain.
a local sports team sells 6 tickets for $3,8 tickets for $4,and 10 tickets for $5.write a rule and equation to find out the cost of 20 tickets.
Need help urgent!!! xp
Why did city-states in the Delian League revolt against Athens?
What happened to Ruby Bridges?
5/6+3/7 in simplest form
On most computers the default font size in Word is _____. a. 8 b. 11 c. 14 d. 16
Explain the purpose of a key on a map
For most people, the majority of their total energy expenditure is from their basal metabolism energy intake physical activity thermic effect of food