Answer:
y=-5,x=2
Step-by-step explanation:
3x+3y=-9________________eqn 1
3x-3y=21________________eqn 2
using elimination method
3x+3y=-9
-
3x-3y=21
subtract equation 2 from equation 1
0+6y=-30
6y=-30
y=-30/6
y=-5
substitute the value of y in equation 1
3x+3y=-9
3x+3(-5)=-9
3x-15=-9
3x=-9+15
3x=6
x=6/3
x=2
Answer:
$260
Step-by-step explanation:
Turn the percentage into a decimal.
35% -> 0.35
Multiply.
400 * 0.35 = 140
Subtract.
400 - 140 = $260
Best of Luck!
Answer:
-9x(-8)
9x8
=72
Step-by-step explanation:
Answer:
x = 8.
Step-by-step explanation:
Because its an isosceles trapezoid the diagonals SV and TU are equal, so
4x - 9 = x + 15
3x = 24
x = 8 (answer)>