57 dollars, 30% tax what is the total price
2 answers:
Answer:
Total price: $74.10
Step-by-step explanation:
Given the $57 amount, and the additional 30% tax:
<h2>Step 1: Conversion of 30% to Decimal Form</h2>First, we must determine the nominal amount of 30% tax. In order to do so, simply convert 30% to its decimal form:
<h3><u>Conversion methods from percentage to decimal form:</u></h3>Method 1: move the decimal point two places to the left, which results in 0.30.
Method 2: Divide 30 by 100:
Multiply $57 by 0.30 to find how much is the dollar value of the 30% tax.
$57 × 0.30 = $17.10
<h2>Step 3: Find the total price</h2>Add $57 and $17.10 to determine the total price:
$57 + $17.10 = $74.10
Therefore, the total price is $74.10.
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9514 1404 393
Answer:
a square 175 m on a side
Step-by-step explanation:
Let x and y represent the sides of the rectangle. Then the perimeter is ...
P = 2(x + y) = 700
x + y = 350 . . . . . . . divide by 2
y = 350 -x . . . . . . . . subtract x
The area of the fenced field is ...
A = xy
A = x(350 -x)
This is a quadratic function that has zeros at x = 0 and x = 350. The axis of symmetry is x = (0 +350)/2 = 175. The vertex (maximum area) is on the axis of symmetry, so corresponds to x = 175. The y-value there is ...
y = 350 -x = 350 -175 = 175
That is, the maximum area will be obtained when the fenced area is a square. Each side of the square is 175 m, which is 1/4 of the total length of the fence.
The dimensions of the space are 175 m by 175 m.
