Answer:
18 km/hr
Step-by-step explanation:
To find the unit rate, we must find the rate in kilometers per hour.
Let’s divide the total kilometers by the total number of hours.
unit rate = kilometers/hours
Juan rode 72 kilometers in 4 hours.
unit rate = 72 kilometers/ 4 hours
unit rate = 72 km/4 hrs
unit rate = 18 km / hr
The unit rate is 18 kilometers per hour.
0.98 . Z z. ...... z .. .
6 cups of flour is needed for a big batch of cookies that uses 9 cups of oatmeal
Step-by-step explanation:
For 3 cups of oatmeal 2 cups of flour is required.
We need to find how much flour is needed for 9 cups of oatmeal.
Solving by using Unitary Method
3 cups of oatmeal require flour = 2 cups
1 cup of oatmeal require flour = 
9 cups of oatmeal require flour = 
= 
So, 6 cups of flour is needed for a big batch of cookies that uses 9 cups of oatmeal
Keywords: Word Problems
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<span>A random sample is drawn from a population with mean μ = 66 and standard deviation σ = 5.5. use table 1.
a. is the sampling distribution of the sample mean with n = 16 and n = 36 normally distributed? yes, both the sample means will have a normal distribution. no, both the sample means will not have a normal distribution. no, only the sample mean with n = 16 will have a normal distribution. no, only the sample mean with n = 36 will have a normal distribution.
b. can you use the standard normal distribution to calculate the probability that the sample mean falls between 66 and 68 for both sample sizes? yes, for both the sample sizes, standard normal distribution could be used. no, for both the sample sizes, standard normal distribution could not be used. no, only for the sample size with n = 16, standard normal distribution could be used. no, only for the sample size with n = 36, standard normal distribution could be used.
c. calculate the probability that the sample mean falls between 66 and 68 for n = 36. (round intermediate calculations to 4 decimal places, "z" value to 2 decimal places, and final answer to 4 decimal places.)</span>
the slope is -4, so B is the answer.
