A painting cost $225. If the sale price is $191.25, what is the percent discount

Answer-

The extra cost paid by taking this deal is equivalent to actual yearly rate of interest 36%

Solution-

Price of truck = $4500

John made a down payment of $1500, so the present value of annuity will be,

[tex]4500-1500=\$3000[/tex]

We know that,

[tex]\text{PV of annuity}=P[\frac{1-(1+r)^{-n}}{r}][/tex]

[tex]PV\ of\ annuity=3000,\\\\P=350,\\\\r = x%\ monthly\\\\n=10\ months[/tex]

Putting  the values,

[tex]\Rightarrow 3000=350[\dfrac{1-(1+x)^{-10}}{x}][/tex]

[tex]\Rightarrow \dfrac{3000}{350}=[\dfrac{1-(1+x)^{-10}}{x}][/tex]

[tex]\Rightarrow \dfrac{60}{7}x=1-(1+x)^{-10}[/tex]

[tex]\Rightarrow (1+x)^{-10}+\frac{60}{7}x-1=0[/tex]

Using calculator we get,

[tex]\Rightarrow x=0.0291=2.91\% \approx 3\%[/tex]

Therefore, annual interest will be,

[tex]=12\times x=12 \times 3=36\%[/tex]

The population of city A is 82% of the population of city B.

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

Given:

Let y be the population of the city A.

and, x be the population of city B.

As, the population of city A is 18% less than the population of city B.

So, (100- 18) = 82% = 0.82

Thus, the relation is y= 0.82 x

Hence, The population of city A is 82% of the population of city B.

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Final answer:

City A's population is 82% of city B's population, which is calculated by subtracting the decrease percentage (18%) from 100%.

Explanation:

The question focuses on finding the percentage of city A's population relative to city B's population. Given that city A's population is 18% less than city B's population, it means that city A has 82% (100% - 18%) of the population of city B. Therefore, if city B is considered 100% in terms of population size, city A's population is 82% of city B's population. This is calculated by understanding that subtracting the percentage decrease from 100% gives us the remaining percentage.

Hence, City A's population is 82% of City B's population, indicating that City A's population is 82/100 or 0.82 times the population of City B.

Answer:

65.4 in³

Step-by-step explanation:

Answer:

  0.7 building

Step-by-step explanation:

The allowed time is the same, so we expect the amount of building to be proportional to the number of people working. If 7/10 of the workforce is present, we expect 7/10 of the building to be painted.

Answer:

C. x = 4 2/3  or x = -5 1/3

Step-by-step explanation:

4|x + 1/3| = 20

Divide both sides by 4.

|x + 1/3| = 5

Deal with the absolute sign symbol.

x + 1/3 = 5  or  x + 1/3 = -5

x = 4 2/3  or x = -5 1/3

Answer: C. x = 4 2/3  or x = -5 1/3

There are 22 problems Grace get correct.

What is mean by Percentage?

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

To Calculate the percent of a number , divide the number by whole number and multiply by 100.

Given that;

Total number of questions = 25

And, Grace got 88% correct.

Now,

Since, Total number of questions = 25

And, Grace got 88% correct.

Hence, The correct questions = 88% of 25

                                              = 88/100 x 25

                                              = 88/4

                                              = 22

Thus, There are 22 problems Grace get correct.

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Answer:

At this rate traveler receives 82.33 Swiss Francs.

Step-by-step explanation:

A traveler has $50 United States bills. He wishes to convert them to Swiss Francs.

The current exchange rate : 1 Dollar = 1.6465 Swiss Francs

50 Dollars = 1.6465 x 50 = 82.325 Swiss Francs  rounded to 82.33.

At this rate traveler receives 82.33 Swiss Francs.

Tracy has the equivalent of 2 and 1/2 full boxes of tile left after tiling the bathroom, as each of the four boxes has 5/8 of tile remaining.

The question involves a scenario where Tracy is cleaning up after tiling a bathroom and assessing how much tile is remaining. With four open boxes of tile and each box containing 5/8 of tile remaining, we can calculate the total amount of tile left. To do this, we simply multiply the number of boxes by the fraction representing the remaining tiles in each box. This gives us:

4 boxes × 5/8 tile per box = 20/8 (or 2 and 1/2 boxes when simplified).

Therefore, Tracy has the equivalent of 2 and 1/2 full boxes of tile left after tiling the bathroom. The small gaps mentioned in another context are typically recommended to accommodate expansion and contraction of the tiles due to changes in temperature and humidity, which is an important concept in laying tile.

 A = E = 25.02 feet

 B = D = 31.11 feet

 C = ║(37, 65) -(63, 39)║ = √((-26)² +26²) = √1352 ≈ 36.77 . . . feet

i litterly need just 49 points lol thank man XD

To find the area of a parallelogram with base length x+4 and height x+3, multiply these two values to yield an area represented by the quadratic equation x²+7x+12.

The area of a parallelogram is calculated by multiplying the base length by the height of the parallelogram. For a parallelogram with a base length of x+4 and a height of x+3, the area can be found by the formula Base x Height = Area of parallelogram.

The calculations follow these steps:

Therefore, the area of the parallelogram is represented by the equation x²+7x+12, given the dimensions provided.

Final answer:

To find the width of the rectangular classroom, we divide the area, expressed as -3a - 21, by the length, expressed as a+3. Simplifying the trinomial by binomial division, we find that the width is represented by the expression (a - 7).

Explanation:

To find the expression for the width of the classroom, we need to divide the area of the rectangle by its length. The area of the rectangular classroom is given by the trinomial a - 4a - 21, which simplifies to -3a - 21. Since we are given that the length of the rectangle is a+3, we divide the area by the length to get the width.

Width = Area / Length

Width = (-3a - 21) / (a + 3)

Now, to divide the trinomial by the binomial, we look for a binomial that when multiplied by the length gives us the area. The factors of -21 that add up to -4 (the coefficient of 'a' in the area expression) are -7 and 3. So, the binomial that we seek can be written as (a - 7) because:

(a+3)(a-7) = a² - 7a + 3a - 21 = a² - 4a - 21

Which matches our area expression. Therefore, the expression for the width of the classroom is (a - 7).

The questions are solved by setting up equations based on the information provided, and then solving. The equations help identify the larger integer, the denominator, and the positive integer in the various problems.

The first question talks about two integers, hence we can express them as x and y. It is stated that one is 3 less than the other, so we let y = x - 3. The sum of their squares is 185, so we can write this as x² + y² = 185. Replacing y in the equation, we get x² + (x - 3)² = 185. Solve this quadratic equation for its roots, one of which is the larger integer.

In the second question, the numerator of a fraction is described to be 1 more than twice its denominator. If the denominator is x, the numerator becomes 2x + 1. We're also told that when 4 is added to both, the fraction reduces to 1/2. Thus, we have: (2x + 1 + 4) / (x + 4) = 1/2. Solve this equation to find the denominator.

The third question talks about a positive integer and its inverse (1/x if x is the integer). It is mentioned that their difference is 1/4. Hence, we get the equation: x - 1/x = 1/4. Solving this equation gives the required integer.

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Answer:

50%

Step-by-step explanation: