Answer:
75 × 12 + 30m = 990
∴ m = 3
Step-by-step explanation:
Assume the number of months Talia brings a guest to be 'm'.
So the amount of Talia has to pay for guests for one year is $ 30m .
So, <em>total amount of money Talia has pay for one year = (monthly membership cost)×(number of months in a year) + (additional amount for guests)</em>
Total cost = $990
Monthly membership cost = $75
Number of months in a year = 12
Additional amount for guests = $ 30m
∴ The equation which gives you the number of moths she brought guests is:
990 = 75×12 + 30m
990 = 900 + 30m
990-900 = 30m
30m = 90
∴ m = 3
Step-by-step explanation:
1 pound = 16 ounces
5 pound = 16 x 5 = 80
Cost per ounce = 15
Cost of 80 ounces = 15 x 80 = 1200
Option D is the correct answer
Survive because your persevering through a tough time
1) The error occurred when you moved the decimal place one spot to the left without changing the exponent of 10 to go along with it.
Not changing the exponent will change the entire value of the answer. By changing 10.35 to 1.035, we made our answer 10 times smaller, so in order to compensate for that, we need to make 10^10 ten times bigger by changing it to 10^11.
2) 10.35 x 10^10 gets changed to:
1.035 x 10^11
3) The strategy we used is to apply proper scientific notation to our answer. We should recognize when we drastically change the value of our original answer.
Answer:
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 16 days = 384 hours
Sample mean, 
= 15 days 10 hours = 370 hours
Sample size, n = 19
Sample standard deviation, s = 30 hours
First, we design the null and the alternate hypothesis
We use one-tailed t test to perform this hypothesis.
Formula:
Putting all the values, we have
The value of t-statistic is -2.03
