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3 years ago

What is the discount and sale price of a $300 item that has been discounted 10%?

Mathematics

2 answers:

Paha777 [63]3 years ago

7 0

270 I think if not my bad

murzikaleks [220]3 years ago

3 0

Answer:

$270

Step-by-step explanation:

x 10

___ = ___

300 100

300 x 10 = 100x

3000=100x

x=30

300-30=270

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Can someone please explain how the answer is D

Kitty [74]

Step-by-step explanation:

Because the length of ST is calculated using pythagorean theorem:

${c}^{2} = {a}^{2} + {b}^{2}$

Where the square of the hypotenuse is equal to the sum of squares of the other two sides of a right triangle. In this case, the hypotenuse is ST and the other two sides are distances between S and T over the X and Y axis. Those are easily calculated:

$x = |sx - tx| \\ y = |sy - ty|$

Where x is the distance between S and T over X axis and Y distance over Y axis, sx and tx are X coordinates of S and T, sy and ty are Y coordinates of S and T.

Using that formula, you get that y = 17 and x = 8.

Back to the pythagorean theorem, if we put those number in the formula of the pythagorean theorem, we get something like this:

${c}^{2} = {x}^{2} + {y}^{2} \\ {c}^{2} = {8}^{2} + {17}^{2} = 64 + 289 \\ {c}^{2} = 353 \\ c = \sqrt{353}$

And finally, the correct answer is in fact 353.

3 0

3 years ago

1.5 lbs of gum balls I want to buy it’s 3.99 per pound

zubka84 [21]

Answer:

$5.99 for 1.5 lbs of gumballs

Step-by-step explanation:

You want to buy One and a half pounds of gumballs for $3.99 per pound. It is 3.99 for one pound of gumballs, so the price for half a pound of gumballs is half of that price.

3.99 / 2 = 1.995

Then add the price of 1 pound

3.99 + 1.995 = 5.985

Then you can round that up to 5.99

5 0

3 years ago

Suppose a quiz has 12 multiple choice questions. Each question has 4 answer choices. If a student takes the quiz and randomly gu

Gnoma [55]

The probability that the student gets between 1 and 6, exclusive, questions correct will be 0.7872...

Explanation

If the probability of success is $p$ , then the probability of $r$ successes in $n$ trials will be......

$P = ^nC_{r}*(p)^r (1-p)^n^-^r$

Here, the quiz has total 12 questions and each question has 4 answer choices. So, $n=12$ and $p=\frac{1}{4}= 0.25$

The student gets between 1 and 6, exclusive, questions correct. It means there can be 2 or 3 or 4 or 5 questions as correct. So....

The probability of 2 or 3 or 4 or 5 questions correct will be:

$=^1^2C_{2}*(0.25)^2(1-0.25)^1^0 + ^1^2C_{3}*(0.25)^3(1-0.25)^9 +^1^2C_{4}*(0.25)^4(1-0.25)^8+^1^2C_{5}*(0.25)^5(1-0.25)^7\\ \\ =0.2322...+0.2581...+0.1935...+0.1032... \\ \\ =0.7872...$

3 0

3 years ago

Lou had r rocks in his collection. He separated his rocks into 3 equal piles. He now has 12 rocks in each pile. Which equation r

laila [671]

Answer:

$r$ $\div$ 3 = 12

Step-by-step explanation:

Given:

Lou had r rocks in his collection.

He separated his rocks into 3 equal piles.

He now has 12 rocks in each pile.

Question asked:

Which equation represents this situation?

Solution:

Total number of rocks = $r$

He separated in number of piles = 3

Each pile contains = 12 rocks

The equation will be :-

$r$ $\div$ 3 = 12

Therefore, equation which represents this situation is $r$ $\div$ 3 = 12

5 0

3 years ago

Wha happens when a solid is dissolved into a liquid?

barxatty [35]

Answer:

the correct answer is

Step-by-step explanation:

When a solid dissolves the solid (solute) and the liquid (solvent) form a very close intimate mixture called a solution. ... If a solid dissolves on mixing its particles break apart and form a loose association with the liquid (solvent) particles.

hope this helps u!!!!

3 0

3 years ago