I don’t know how to solve its very hard sorry I can’t even solve it ;(
Answer: It would take 40 minutes to mow a lawn with a mower containing 12-inch wide blades.
Step-by-step explanation:
Answer:
Step-by-step explanation:
2) Take the number you see (7). How many 7s are there? There are three.
7 x 3
3) What number do you see? 3. How many 3s? Five 3s.
3 x 5
Now you try
Answer:
90 degrees
Step-by-step explanation:
Because AC is tangent to the circle at point C, the radius is perpendicular to the tangent line. This means that OAC = to 90 degrees
∘
Answer:
The mean of of the sample mean of these quality checks is 10 and the standard deviation is 0.7155.
Step-by-step explanation:
To solve this question, we use the central limit theorem.
The Central Limit Theorem estabilishes that, for a random variable X, with mean 
and standard deviation 
, the sample means with size n can be approximated to a normal distribution with mean and standard deviation 
In this problem, we have that:
The mean of of the sample mean of these quality checks is 10 and the standard deviation is 0.7155.
