Answer:4
Step-by-step explanation:
Answer:
-7
Step-by-step explanation:
63/9 but there is an odd number of negative numbers so negative answer
Answer:
12 hours
Step-by-step explanation:
Let the number of hours be represented as h.
Sarah's surfboards charges a fee of $60 to rent a surfboard and then $10.50 per hour.
Mathematically ,
60 + 10.50h
Sally's surfboards does not charge a fee, but they cost $15.50 per hour
Mathematically,
15.50h
Equating both equations together
60 + 10.50h = 15.50 h
Collect like terms
60 = 15.50h - 10.50h
60 = 5h
h = 60/5
h = 12 hours
Therefore, the number of hours that the cost will be the same to rent a surfboard for each shop is 12 hours.
Answer:
A chi-square goodness-of-fit test shows that the frequencies observed fit well with those that were expected. Hence, the decision was to <u>retain the null hypothesis .</u>
Step-by-step explanation:
A chi-square goodness-of-fit test shows that the frequencies observed fit well with those that were expected then the value of the test statistic is equal to zero.
Then the decision would be to retain the null hypotheses as zero is included in any value of the level of significance applied.
The chi square is a continuous distribution ranging from zero to plus infinity.
-2(-9-2a)
18+4a
If you need it so that "a" equals something let me know.