Considering that the hallway is rectangular in shape such that its perimeter is calculated by the equation,
P = 2L + 2W
where P is perimeter, L is length, and W is width. Substituting the known values,
10.4 = 2L + 2W
Dividing both sides of the equation by 2,
5.2 = L + W
W = 5.2 - L
Answer:
1) 4 bottles
2) $0.75
3) $5.25
Step-by-step explanation:
1)9/3 = 3 so you must divide 12 by 3
12/3=<u>4 bottles</u>
2)12/1=12
divide 9 by 12
9/12 =<u>$0.75</u>
3)12/7 =
(The actually number is too long to write so just leave it in fraction form)
9÷12/7=<u>$5.25</u>
Ok, this is a ratio problem; the ratio of the length to width is constant (and therefore equal): 4 /6 = 15 / x Now, with a ratio, we may do any allowable algebra operation: cross-multiply, invert both sides, multiply or divide both sides by the same amount, etc. Let's cross-multiply: 4x = (15)(6) x = 90/4<span> x = 22.5 in. </span>
The income statement illustrates that the net income will be $3530.
<h3>How to calculate the income statement?</h3>
The income statement will be:
<u>Revenue</u>
Consulting revenue 18350
<u>Expenses</u>
Miscellaneous expenses 720
Rent expense 4820
Salaries expense 8370
Telephone expenses 910
Total expenses 14820
Net income = 18350 - 14820 = 3530
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Let:
x = Chemistry textbooks sold
y = Physics textbooks sold
The textbook store sold a combined total of 260, so:
The number of chemistry books sold was three times the number of physics textbooks sold, so:
Let:
Replace (2) into (1):
Replace the value of y into (2):
