Answer:
4
Step-by-step explanation:
Find the LCM of 12 and 15.
LCM = 60.
Now divide the LCM by the two numbers.
60/12 = 5, 60/15 = 4.
As the sister got an hour head start, subtract one.
5-1=4.
Therefore it will be 4 hours.
Answer:
w=-3
Step-by-step explanation:
-3+w=-6 = original problem
w=-6+3 = u add 3 because u have it was negative so if u bring it to the other side u have to make it positive
w=-3 = answer
x= 5
Slove for x by simplifying both sides of the equation, then isolating the variable
Answer:
A. Because the sample size is very large.
Step-by-step explanation:
The sample is quite large, so the t test is safe. With a sample size of at least 100, this test is going to be safe.
So the correct answer is:
A. Because the sample size is very large.
The x-value of the vertex of the given parabola is x = 5, so the correct option is b.
<h3>
How to get the x-value of the vertex?</h3>
If we define the parabola by f(x), by looking at the table, we can read:
So, notice that:
f(2) = f(8).
Then the x-coordinate of the vertex is the midpoint between 2 and 8.
x = (2 + 8)/2 = 5
The x-value of the vertex of the given parabola is x = 5, so the correct option is b.
If you want to learn more about parabolas:
brainly.com/question/4061870
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