Answer:
C) x = -2
Step-by-step explanation:
Original equation:
![12+\sqrt{1-4x}=15\\](https://tex.z-dn.net/?f=12%2B%5Csqrt%7B1-4x%7D%3D15%5C%5C)
subtract 12 from both sides:
![\implies \sqrt{1-4x}=3](https://tex.z-dn.net/?f=%5Cimplies%20%5Csqrt%7B1-4x%7D%3D3)
square both sides:
![\implies 1-4x=9](https://tex.z-dn.net/?f=%5Cimplies%201-4x%3D9)
subtract 1 from both sides:
![\implies -4x=8](https://tex.z-dn.net/?f=%5Cimplies%20-4x%3D8)
divide both sides by -4:
![\implies x=-2](https://tex.z-dn.net/?f=%5Cimplies%20x%3D-2)
Answer:
32 hours
Step-by-step explanation:
14x + 250 < 22x
250 < 22x - 14x
250 < 8x
250/8 < x
x = 31.25 = 32 hours
Tim charge for 32 hrs: 14(32)+250= $698
Colorful paints charge for 22 hrs: $704
x/5 = 7/3
Cross multiply:
3x = 35
Divide by 3 on both sides:
x = 35/3
Change to mixed number:
x = 11 2/3
Answer: x = 11 2/3
The fourth event is dependent. Not replacing draws changes the probability of drawing a certain number or thing.
Answer:
x=−0.25
Step-by-step explanation: