-3u+8v=-28x9
9u-4v= 44x-3
-27u+72v=252
-27u+12v= -132
60v=384
Divide both sides by 60
60v= 384
60. 60
v=6.4
Substitute v=6.4 in equ 1
-3u+8(6.4)= 28
-3u+51.2=28
-3u=28-51.2
-3u=-23.2
Divide both sides by-3u
-3u=-23.2
-3. 3
u=7.73
Therefore u=7.73 and v=6.4
Answer:
10 hours and 20 minutes.
Step-by-step explanation:
We can find out how many hours of sleep Tucker gets every night by counting in one-hour intervals.
One hour from 8:25 is 9:25.
9:25, 10:25, 11:25, 12:25, 1:25, 2:25, 3:25, 4:25, 5:25, 6:25.
This is 10 hours.
Now we count in ten-minute intervals to get to 6:45
6:35, 6:45.
This is 20 minutes.
Therefore, Tucker gets 10 hours and 20 minutes of sleep each night.
Answer:
12
Step-by-step explanation:
3*4 = 12
12/6 = whole number
6/4 is not a whole number
12 is the lowest it could be.
Also those kids have issues.
Answer:
x=±√7
Step-by-step explanation:
Hi there!
We're given the quadratic equation 6x²-42=0 and we need to find the roots of the equation (the values of x that make the equation true).
So we need to isolate x onto one side.
We can start by adding 42 to both sides
6x²=42
divide both sides by 6
x²=7
Now, take the square root of both sides (remember that when we take the square root, we get both POSITIVE and NEGATIVE answers).
x=√7 and x=-√7 (can be rewritten as x=±√7)
Hope this helps! :)
Answer: A, C, and D
Step-by-step explanation:
Substitute -4 for X and solve