mattiemeredith5 mattiemeredith5

02-07-2020
Mathematics

contestada

Solve the system by substitution. In the space provided, type the answer without any
spaces between the letters, numbers, or symbols.
3. x - y= 12
x + y = 18

Respuesta :

alishoaibm2004 alishoaibm2004

02-07-2020

Answer:

x=15,y=3

Step-by-step explanation:

x-y=12

x+y=18

now,x=12+y

substituting in x+y=18

(12+y)+y=18

12+2y=18

2y=18-12

2y=6

y=6/2

y=3

now,x=12+y

so,x=12+3

x=15

Answer Link

Otras preguntas

if f(x)=3x+7 and g(x)=2x-5 find g(f(-3))A. -26 B.-9 C. -1 D. 10

Which of the following changes will decrease the rate of collisions between gaseous molecules oftype A and B in a closed container? A. decrease the volume of t

which number will make the fractions equivalent 25/35

How to convert 0.39 into a fraction?

number 1 I need help with confused

i need a diagram for how a scrap heap magnet works

A 36-tooth gear turns three times. It is connected to a 12-tooth gear. How many times does the 12-tooth gear turn?

The edge of one cube is 4 m shorter than the edge of a second cube. The volumes of the two cubes differ by 1216 m^3. Find the edge of the smaller cube.

A 36-tooth gear turns three times. It is connected to a 12-tooth gear. How many times does the 12-tooth gear turn?

a bottle contains 12 red marbles and 8 blue marbles. A marble is chosen at random and not replaced. Then a second marble is chosen at random. Determine the prob