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Zinaida [17]
3 years ago
14

During a sale, thetc price of a sweater was changed from $20 to $16. What was the percent of decrease in the price of the sweate

r?
Mathematics
2 answers:
Maru [420]3 years ago
7 0
The sweater has a 20% decrease in price. 

Here's the math:
$20 - $16 =$4
$4 / $20 =.2
.2= 20%
Shalnov [3]3 years ago
3 0
Percent change=change/original times 100

change=20-16=4
original=20

change=4/20 times 100=0.2 times 100=20

answer is 20%
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The height of a can of coke is in 11 cm and the radius is 6 cm calculate the total surface area of the can in cm^3 assuming that
Alecsey [184]

The total surface area of the can of coke is 641.143 cm².

<h3>What is the total surface area of the can?</h3>

A can of coke has the shape of a cylinder. A cylinder is a three-dimensional object that is made up of a prism and two circular bases. The total surface area of a closed cylinder can be determined by adding the area of all its faces.

Total surface area of the closed cylinder = 2πr(r + h)

Where:

  • r = radius = 6cm
  • h = height = 11 cm
  • r = pi = 22 / 7

Total surface area of the closed cylinder = (2 x 22/7 x 6) x (6 + 11)

(264 / 7) x (17)

37.714 x 17 = 641.143 cm²

To learn more about how to calculate the total surface area of the closed cylinder, please check: brainly.com/question/13952059

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8 0
2 years ago
At a sale, dresses were sold for $22 each. This price was 55% of a dress's original price. How much did a dress originally cost?
-BARSIC- [3]

Answer:

$9.90

Step-by-step explanation: I DID THE WORK. SIMPLE

6 0
3 years ago
Read 2 more answers
Find the vertex, focus, directrix, and focal width of the parabola. (5 points)
Anarel [89]

\bf \textit{vertical parabola vertex form with focus point distance} \\\\ 4p(y- k)=(x- h)^2 \qquad \begin{cases} \stackrel{vertex}{(h,k)}\qquad \stackrel{focus~point}{(h,k+p)}\qquad \stackrel{directrix}{y=k-p}\\\\ p=\textit{distance from vertex to }\\ \qquad \textit{ focus or directrix}\\\\ \stackrel{"p"~is~negative}{op ens~\cap}\qquad \stackrel{"p"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}

\bf -\cfrac{1}{20}x^2=y\implies \cfrac{x^2}{-20}=y\implies x^2=-20y\implies (x-0)^2=-20(y-0) \\\\\\ (x-\stackrel{h}{0})^2=4(\stackrel{p}{-5})(y-\stackrel{k}{0})

something noteworthy is that the squared variable is the "x", thus the parabola is a vertical one, the "p" value is negative, so is opening downwards, and the h,k is pretty much the origin,

vertex is at (0,0)

the focus point is "p" or 5 units down from there, namely at (0, -5)

the directrix is "p" units on the opposite direction, up, namely at y = 5

the focal width, well, |4p| is pretty much the focal width, in this  case, is simply yeap, you guessed it, 20.

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Ab" that goes through points (0,17)
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it takes 70 oz of grass seed to seed 2800ft of lawn. at this rate, how much would be needed for 3600 ft of lawn?
Rom4ik [11]
Find the multiplier to get from 2800ft to 3600ft. Multiply the weight of seed required for 2800ft by this multiplier for your answer.
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