A. solve for 1 variable
let's solve for x in 2nd equation
add 2y to both sides
x=2y+4
sub 2y+4 for x in other equation
3(2y+4)+y=5
6y+12+y=5
7y+12=5
minu12 both sides
7y=-7
divide 7
y=-1
sub back
x=2y+4
x=2(-1)+4
x=-2+4
x=2
(2,-1)
B. eliminate
eliminate y's
multiply first equation by 2 and add to first
6x+2y=10
<u>x-2y=4 +</u>
7x+0y=14
7x=14
divide by 7
x=2
sub back
x-2y=4
2-2y=4
minus 2
-2y=2
divide -2
y=-1
(2,-1)
(2,-1) is answer
25 * 5 + 15 * 3 - 40 * 2 =
125 + 45 - 80 =
170 - 80 =
90
2x1,000,000
9x100,000
3x10,000
7x1,000
0x100
8x10
2x1
Answer:
0.48
Step-by-step explanation:
I timed the percentage 0.16×3=0.48
Answer:
They sold 400 Dollhouses
Step-by-step explanation:
Grab a calculator! It's pretty simple.
Apply 240,000 in the calculator, and divide it by 600! That's it ! You now hvae 400. Thats how many dollhouses they sold!
