Answer:
Step-by-step explanation:
Answer:
x+18
Step-by-step explanation:
Answer:
- A) x > 3 and x < 2 has no solutions
Step-by-step explanation:
Given inequalities below and we are looking for a pair with no solution.
Let's verify:
A) x > 3 and x < 2,
- It has no solutions since the two inequalities have no common interval.
B) x > - 3 and x < - 2,
- Its solution is -3 < x < - 2, the interval between two given endpoints.
C) x > - 3 and x < 2,
- Similar to option B, the interval is between two endpoints:
D) x > - 3 and x > - 2,
- Its solution is x > - 2, the two inequalities cover almost same interval.
Answer:
only students who have recess at 12 p.m. or later may go out
Step-by-step explanation:
Let the time after midnight be represented by t, and the temperature be y. Since the temperature increases by 1.2 degrees Fahrenheit each hour, the time taken to reach 32 degrees Fahrenheit can be gotten from:
y = 1.2t + 18
put y = 32
32 = 1.2t + 18
1.2t = 14
t = 14/1.2 = 11.67 hours
Since the recess starts at half hour or hour, hence the recess would start at t = 12 hours, i.e. at 12 p.m.
Hence only students who have recess at 12 p.m. or later may go out
You can set up the equation x+9=6. So the number will be -3
