Answer:
n(A) = 10
Step-by-step explanation:
The number of elements in the set of even numbers from 2 to 20 is 10.
n(A) = 10
_____
<em>Additional comment</em>
Dividing the set elements by 2 maps them to the Natural numbers 1 .. 10. This makes them easy to count.
The volume of a rectangular prism is L • W • H
We are looking for whole numbers that multiply to 28.
So in total there are 10 possible molds.
Hello!
OK, so first we need to see all of our info.
To rent a bike = $17
Each additional hour = $2 per hour
Let "rent a bike" = r
Let "each additional hour" = h
27 = r + 2h
Now to solve.
27 - 17 = 10
10 ÷ 2 = 5
This shows us that she rented the bike for 5 hours.
Check:
27 =? 17 + 2(5)
Solve:
27 = 17 + 10
27 = 27
Yes, we are correct!
Final equation = 27 = r + 2h
Final answer = Ashely rents the bike for 5 hours.
Hope this helped!
Answer:
Z value for the first pump = -0.68
Z value for the second pump = 0.45
Step-by-step explanation:
Data provided in the question:
Mean labor cost to repair a heat pump = $90
Standard deviation = $22
Labor cost for the first, X₁ = $75
Labor cost for the Second, X₂ = $100
Now,
Z value for the first pump = [X₁ - Mean] ÷ Standard deviation
thus,
Z value for the first pump = [ $75 - $90] ÷ $22
= - 0.68
Z value for the second pump = [X₁ - Mean] ÷ Standard deviation
thus,
Z value for the second pump = [ $100 - $90] ÷ $22
= 0.45
Answer:
4
Step-by-step explanation:
The absolute value is just the positive version of a number so if you have like -28 the absolute value is just 28