You need to multiply 21 by $4.65, which gets you $97.65
Answer: x=3.6; y=-2.5
Step-by-step explanation:
To solve this pair of equations, we can use elimination method.
5x+4y=8
10x-4y=46
Add both equations together to cancel out 4y.
15x=54 [divide both sides by 15]
x=3.6
Now that we know x, we can plug it back into any equation to find y.
5(3.6)+4y=8 [multiply]
18+4y=8 [subtract both sides by 18]
4y=-10 [divide both sides by 4]
y=-2.5
Now, we have x=3.6 and y=-2.5.
Answer:
x=2
Step-by-step explanation:
first distribute the 1/2
1/2x - 5=-4
then add 5 to both sides
1/2x=1
multiple by 2 on both sides
x=2
Answer: 336
Step-by-step explanation:
The numbers are all multiples of 6
Answer:
The answer is both
Step-by-step explanation:
8x8=64
and 4x4x4=64