Answer:
(x, y) = (3, -4)
Step-by-step explanation:
See the attached for a graph.
Answer: x= 5
Step-by-step explanation:
Plug the second equation into the first equation’s y.
3x-2(-2x+7)=21
Then use distribution
3x+4x-14=21
Add 4x and 3x
7x-14=21
Then add 14 to both sides
7x=35
Divide by 7 to get x
35/7=5
x=5
Answer: 6 cm,22.9 cm, 20.1 cm
Step-by-step explanation:
$21.60 - $18.00 = $3.60
$3.60 : $18.00 = 0.2
0.2 · 100% = 20%
The cube with 1 face with area 36 ft^2 has an edge of 6 ft.
The other cube has edges 2 * 6 = 12 ft long and its volume is 12^3
= 1728 ft^3 (answer).