Heather paid $2,022.30 for a computer. If the price paid includes a 7% sales tax, which if the following equation can be used to
determine the price of the computer after tax?
(Let x represent the cost of the computer and y represent the total cost after tax.)
(Let x represent the cost of the computer and y represent the total cost after tax.)
2 answers:
Answer:
D)
Step-by-step explanation:
The Total cost, price plus taxes, will given by
1) Dividing the tax 7 by 100, and write it in its decimal form:
2) Add the number 1, and make it a constant
This function fits to calculate the total cost after a 7% tax. In this case just plug $2,022.30 for x, then solve for y to have the total cost.
You might be interested in
Answer:
- <u>Option A. about 100.5ft²</u>
<u />
Explanation:
Since the <em>bases</em> must not be painted, their areas are <em>not included</em> in the calculation.
The <em>surface</em> to paint, of each pillar, is equal to the lateral area of a<em> cylinder </em>with he dimensions given.
The formula for the laeral area of a cylinder is:
Substitute including the conversion factor to convert inches to feet:
Answer:
4√13
Step-by-step explanation:
1. Calculate the length of SN
Your triangle (below) is a relatively tall isosceles triangle.
∆STN is a right triangle, so we can use Pythagoras theorem to calculate the length of SN.
SN² + NT² = ST²
SN² + 4² =22²
SN² + 16 = 484
SN² = 468
SN = √468 = 6√13
2. Calculate the length of SX
UM and SN are lines from an angle to the centre of the opposite side, so they are medians.
The medians of a triangle meet at a single point, X — the centroid.
Another characteristic is that the centroid divides each median into segments in a 2:1 ratio.
Thus,
SX = ⅔SN = ⅔ × 6√13 = 4√13
