3y - 2x = -15 and x = -6y
2 answers:
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Answer:
STEP
1
:
12
Simplify ——
1
Equation at the end of step
1
:
-15 k 5
(((————)+((8•—)•k))-————————-10k)+(12•k2))-5k)-12
(k2) 2 (k3)(k2)
STEP
2
:
Equation at the end of step 2
-15 k 5
(((————)+((8•—)•k))-————————-10k)+(22•3k2))-5k)-12
(k2) 2 (k3)(k2)
STEP
3
:
Equation at the end of step
3
:
-15 k 5
(((————)+((8•—)•k))-——————-10k)+(22•3k2))-5k)-12
(k2) 2 (k3)k2
STEP
4
:
5
Simplify ——
k3
Equation at the end of step
4
:
-15 k 5
(((————)+((8•—)•k))-————-10k)+(22•3k2))-5k)-12
(k2) 2 k3k2
STEP
5
:
k
Simplify —
2
Equation at the end of step
5
:
-15 k 5
(((————)+((8•—)•k))-————-10k)+(22•3k2))-5k)-12
(k2) 2 k3k2
STEP
6
:
15
Simplify ——
k2
Equation at the end of step
6
:
15 5
(((——)+4k2)-————-10k)+(22•3k2))-5k)-12
k2 k3k2
Answer:
The cube must be 21.125 feet long.
Step-by-step explanation:
David can completely cover a cube of side length equal to 2 feet, using 16 quarts of paint.
With this we make a conversion factor:
feet/quarts = 0.125 feet/quarts
This means that with each quart of paint you can paint a 0.125-foot long cube
We need to know how big is the length of a cube that can be covered with 169 quarts of paint
Then we use the conversion factor found earlier
The cube must be 21.125 feet long.