The number that is its own opposite is zero. Zero is both a positive and a negative number at the same time.
Answer:
Javier rode bike 34 minutes before lunch.
Step-by-step explanation:
Let the number of minutes Javier rode the bike after lunch be = x minutes
Then according to question number of minutes he rode the bike after lunch

Total number of minutes he rode bike = 41 min
Therefore,

On solving

Divide both side by 6 we get

Number of minutes he ride before lunch
min
Answer:
D. 64
Step-by-step explanation:
I calculated it logically
The hypothesis testing for this problem is:
a. The hypothesis for this problem are:
Null: H0: μ=6
Alternative: Ha: μ≠6
b. Test
T-statistics = (6.08 - 6) / 0.44* √(121) = 2
c. P value = 0.047759
Since our p-value is smaller than the significant level of 0.05, we can say that we reject the null hypothesis.
Conclusion: there is enough evidence to say lathe is not in perfect adjustment.