Answer:
D. taking two marbles from a box without replacing the first marble are dependent events
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Find the volume of the pyramid.
1 answer:
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Answer:
It will take the bakery 2.875 hours to make back the amount invested.
The total expenses and receipts, both will = $112.125
Step-by-step explanation:
Given:
Cost of equipment = $69
Operation cost per hour = $15
Average hourly receipts = $39
To find how many hours will it take for the Bakery to make back the amount invested and what would the total expenses and receipts both equal
Solution:
Let the bakery take hours to make back the amount invested.
Operation cost for hours in dollars will be =
Equipment cost = $69
Total expenses in dollars can be given as =
Receipts for hours in dollars will be =
<em>Since the bakery makes up the amount invested in </em><em> hours, so the amount in expenses must be equal to the total receipts for </em>
<em> hours.</em>
Thus, we have:
Subtracting both sides by
Dividing both sides by 24.
∴
So, in 2.875 hours the bakery will be able to make back all the investment.
Total expenses in 2.875 hours will be =
Total receipts will be the same and can be given as =
Answer:
1022 minutes
Step-by-step explanation:
Let x be the number of minutes the executive used the phone
There is a base charge of $35 and only minutes greater than 900 min are charged at the rate of $0.40 per minute
So total bill A = 35 + 0.4(x-900)
We know the bill was $83.80
So we can rewrite the equation as
35 + 0.4(x-900) = 83.30
and solve for x
To make it easier for computational purposes
1) Multiply both sides by 10
2) Perform individual multiplication
3) Subtract 350 from both sides
4) Simplify
5) Divide both sides by 4
6) Simplify
7) Add 900 to both sides to isolate x
8) Simplify to obtain x
Answer: The executive used the phone for 1022 minutes that month