Answer:
6%
Explanation:
The marked price of the electric heater = Rs 4000
• In winter, when 10% discount was given, the retailer made 20% profit.
• In summer, ,when the discount was increased by x%,, the retailer made 12% profit.
We want to find the value of x.
First, we find the sale price of the good after a 10% discount.
\(\begin{gathered} Sale\;Price=4000-(10\%\text{ of }4000) \\ =4000-400 \\ =\$3600 \end{gathered}\)Next, the retailer made a 20% profit when he sold the heater at $3600, we find the cost price of the heater.
\(\begin{gathered} \text{Percentage Profit}=\frac{\text{ Selling Price}-\text{ Cost Price}}{\text{ Cost Price}} \\ \frac{20}{100}=\frac{3600-CP}{CP} \\ 0.2=\frac{3600-CP}{CP} \\ \text{ Cross multiply} \\ 0.2CP=3600-CP \\ CP+0.2CP=3600 \\ 1.2CP=3600 \\ CP=\frac{3600}{1.2} \\ CP=3000 \end{gathered}\)The cost price of the water heater is Rs 3000.
In the summer, she increased the discount percent to get only 12% profit from the same type of heater.
We find the selling price that gives a 12% profit.
\(\begin{gathered} \text{Percentage Prof}\imaginaryI\text{t}=\frac{\text{Sell}\imaginaryI\text{ng Pr}\imaginaryI\text{ce}-\text{Cost Pr}\imaginaryI\text{ce}}{\text{Cost Pr}\imaginaryI\text{ce}} \\ \frac{12}{100}=\frac{SP-3000}{3000} \\ \frac{12}{100}\times3000=\frac{SP-3000}{3000}\times3000 \\ 360=SP-3000 \\ SP=3000+360 \\ SP=3,360 \end{gathered}\)The selling price in summer was $3,360.
Finally, we find the discount.
\(\begin{gathered} \frac{3360}{4000}=0.84 \\ \implies(1-0.84)\times4000=3360 \\ 0.16\times4000=3360 \end{gathered}\)The new discount was 16%.
Therefore:
\(x=16-10=6\%\)The retailer increased the discount by 6%.
Find the value of k for which equation k2x2+2kx=4x-6 has no real roots.
Answer:
Step-by-step explanation:
Find the gradient of the line segment between the points (-2,3) and (2,4). Give your answer in its simplest form.
Answer:
slope = \(\frac{1}{4}\)
Step-by-step explanation:
Calculate the slope m using the slope formula
m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)
with (x₁, y₁ ) = (- 2, 3) and (x₂, y₂ ) = (2, 4)
m = \(\frac{4-3}{2+2}\) = \(\frac{1}{4}\)
1. Use the following to answer the below questions: the sum of 2 times a number and 5 is 13
part a. Translate the above phrase into an algebraic equation. (5 points)
b. Describe a real-life situation that can be represented with that equation. Make sure to identify what
your variable represents (i.e. let x represent…) and include each operation and the part of the
equation in your description. (5 points)
I NEED BOTH ANSWERS ASAP ITS A TESTTT
Answer:
2x + 5 = 13
Step-by-step explanation:
a) 2x + 5 = 13
b)
Dylan goes to the movies and spend 13 dollars in total, the ticket cost 5 dollars and also bough two chocolates, how much was each chocolate?
2x + 5 = 13
2x = 13 - 5
2x = 8
x = 8/2
x = 4
The width of a rectangle is 4 feet and the diagonal length of the rectangle is 13 feet. Which measurement is closet to the length of this rectangle in feet?
Answer:
.
Step-by-step explanation:
A builder is using the drawing below to build a house. If the owner decides to increase the living room dimensions by 20%, what is the new length and width of the living room floor?a. 14.4 feet x 9.6 feetb. 144 feet x 96 feetc. 13.2 feet x 8.2 feetd. 10 feet x 8 feet
Percentage increment means the part of original value is added to the value. The new length of the living room is 14.4 feet long and new width of the living room is 1.6 feet long. The option A is the correct option.
The length of the living room is 12 feet.
The width of the living room is 8 feet.
The owner increases the 20 percent of length and 20% width.
Suppose new length is feet long. As the owner increases the 20 percent of length. Thus the new length will be sum of original length and the 20 percent of it. Hence,
l=12+12/100*12
l=14.4
Thus the new length of the living room is 14.4 feet long.
Suppose new width is feet long. As the owner increases the 20 percent of width. Thus the new width will be sum of original width and the 20 percent of it. Hence,
w=8+20/100*8
w=9.6
the new width of the living room is 1.6 feet long.
Hence the new length of the living room is 14.4 feet long and new width of the living room is 1.6 feet long.
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A carton of grapefruit juice displays the nutritional information shown below. How many grams of sugar are there in a 200 ml glass of juice? Grapefruit juice 250 ml contains Carbohydrate Sugar Protein 19.5 g | 16.5 g | 1.5 g
Answer:
13.2 g
Step-by-step explanation:
let x = grams sugar in a 200 ml glass
16.5 g sugar / 250 ml = x g sugar / 200 ml
x(250) = (16.5)(200)
x = (16.5)(200) / (250) = 3300 / 250 = 13.2
Answer: there are 13.2 g sugar in a 200 ml glass of juice
In this problem, you will investigate similarity. The heights of two similar cylinders are in the ratio 2 to 3 . The lateral area of the larger cylinder is 162π square centimeters, and the diameter of the smaller cylinder is 8 centimeters.
c) How many times as great is the volume of the larger cylinder as the volume of the smaller cylinder?
The volume of the larger cylinder is 27/8 times greater than the volume of the smaller cylinder.
To find the ratio of the volumes of the larger and smaller cylinders, we need to understand the relationship between their heights and radii. Since the heights of the cylinders are in the ratio 2:3, we can assume the height of the smaller cylinder to be 2x and the height of the larger cylinder to be 3x.
Given that the diameter of the smaller cylinder is 8 centimeters, we can calculate the radius by dividing the diameter by 2. Therefore, the radius of the smaller cylinder is 4 centimeters.
To determine the radius of the larger cylinder, we can use the property that the ratio of the volumes of similar shapes is the cube of the ratio of their corresponding lengths. Since the heights of the cylinders are in the ratio 2:3, the ratio of their lengths is also 2:3. Therefore, the radius of the larger cylinder can be calculated as (3/2) * 4 = 6 centimeters.
Now we have the radius and height for both cylinders. The formula to calculate the volume of a cylinder is V = π\(r^2\)h. Substituting the values, we find that the volume of the smaller cylinder is V1 = π(\(4^2\))(2x) = 32πx and the volume of the larger cylinder is V2 = π(\(6^2\))(3x) = 108πx.
To find the ratio of the volumes, we divide V2 by V1: V2/V1 = (108πx)/(32πx) = 108/32 = 27/8.
Therefore, the volume of the larger cylinder is 27/8 times greater than the volume of the smaller cylinder, which simplifies to approximately 3.375 times.
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The following figure shows AABC with side lengths to the nearest tenth.
C
48
6
71
A
B
Find AB in AABC.
Round to the nearest tenth.
Answer:
AB = 4.7 to the nearest tenth
Step-by-step explanation:
Usine the Sine Rule:
6/sin71 = AB/sin48
AB = (6 * sin48)/ sin71
= 4.716
Which descriptions from the list below accurately describe the relationship between QRS and TUV? check all the apply.
Answer:
The triangles are similar.
Step-by-step explanation:
They are similar because they have the same angles. They may be the same size, but it would be best to refer to whatever definition you were given.
The correct descriptions from the list accurately describe the relationship between QRS and TUV is,
⇒ Similar
What is mean by Triangle?A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.
We have to given that;
Two triangles are shown in figure.
Here, All the corresponding angles are same in both triangles.
And, The ratio of their corresponding sides are,
In triangle TUV;
⇒ 90 / 108 = 30 / 36
In triangle QRS;
⇒ 30 / 36
Hence, The correct descriptions from the list accurately describe the relationship between QRS and TUV is,
⇒ Similar
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PLEASE HELP
If a 1/2 gallon of paint covers 1/6 of a
wall, continuing at this rate how much
paint is needed for the entire wall?
Answer:
3 Gallons
Step-by-step explanation:
If half a gallon of paint covers 1/6 of a wall, then we need 6 1/2 gallons of paint. To make this simpler, we can just say that a gallon of paint can cover 2/6 of the wall. This means that with 2 gallons of paint, we can cover 4/6 of the wall. 3 gallons of paint will cover 6/6 of the wall.
Find the area of a regular octagon with
a side length of 8 cm. Round to the
nearest tenth.
8 cm
[? ] cm2
Enter
Answer:
Step-by-step explanation:
Area=2(1+\(\sqrt{2}\))8²
=309.0(round to nearest tenth)
(a - b) (x²-7) - (a - b) (4x + 5)
The final factorized form of the expression (a - b) (x²-7) - (a - b) (4x + 5) is:(a - b) (x - 6) (x + 2)
Given expression is (a - b) (x²-7) - (a - b) (4x + 5).Here, (a - b) is a common factor in the given expression. We can factor out (a - b) as follows:(a - b) (x²-7) - (a - b) (4x + 5) = (a - b) [(x² - 7) - (4x + 5)] = (a - b) (x² - 4x - 12)Next, we can further factorize the expression x² - 4x - 12 as follows:x² - 4x - 12 = (x - 6) (x + 2)
Therefore, the final factorized form of the expression (a - b) (x²-7) - (a - b) (4x + 5) is:(a - b) (x - 6) (x + 2) - this is the answer.
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1.3.19
The selling price of a refrigerator, is $677.50. If the markup is 25% of the dealer's cost, what is the dealer's cost of the refrigerator?
Answer: $542
Step-by-step explanation:
Given the following :
Selling price of refrigerator = $677.50
Markup = 25% of dealers' cost
Dealers' cost of refrigerator =?
Selling price = Dealers' cost + markup
Markup = 25% of dealers' cost
Let dealers' cost = d
Hence,
Selling price = d + 25% of d
Selling price = d + 0.25d
Selling price of refrigerator = $677.50
Then,
$677.50 = d + 0.25d
$677.50 = 1.25d
d = $677.50 / 1.25
d = $542
1 Alex uses 1 yards of ribbon to decorate each picture frame. He wants to decorate 6 picture frames 3 • Determine how many yards of ribbon Alex needs to decorate the picture frames. • Show your work or explain your answer.
Part A:
Jessica has 1/2 yard of ribbon
1/2 yd = 0.5 yd
She uses an equal amount of ribbon to decorate 3 picture frames.
So, basically we need to divide the total amount of ribbon by 3:
0.5 yd/ 3 = 1/6 yd
Part B:
Let's first express the mixed number as a fraction:
1 1/3 yd = 4/3 yd
Alex uses the same amount of ribbon for each frame. And he needs to decorate 6, Hence:
We multiply the amount of ribbon in each frame, by the total of frames:
4/3 yd * 6 = 8 yd
Divide a 6 and 3/4 inch line into three parts so that each part is 1/4 inch shorter than the one before it.
Answer:
Hey there!
x+x+1/4+x+2/4
3x+0.75=6.75
3x=6
x=2
The lines are 2, 2 1/4, and 2 2/4.
Let me know if this helps :)
The three numbers or parts are 2 , 2 1/4 and 2 1/2
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the number be n = 6 3/4
Now , for the number to be divided into three parts where each number is 1/4 shorter than the one before it ,
Let the first divided number be = x
So , the second number will be 1/4 more than the first number
Second number = x + 1/4
And , the third number will be 1/4 more than the second number
Third number = x + 1/4 + 1/4
= x + 2/4
= x + 1/2
Now, the equation will be
The sum of all three numbers = 6 3/4
So ,
x + ( x + 1/4 ) + ( x + 1/2 ) = 6 3/4
3x + 3/4 = 6 3/4
Subtracting 3/4 on both sides , we get
3x = 6
x = 2
Substituting the values of x in the equation , we get
First number = 2
Second number = 2 1/4
Third number = 2 1/2
Hence , the three numbers or parts are 2 , 2 1/4 and 2 1/2
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True or False:
It is possible for an integer linear program to have more than one optimal solution.
True, it is possible for an integer linear program to have more than one optimal solution.
In an integer linear program, the objective is to optimize a linear objective function subject to linear constraints and integer variable restrictions. While it is common for linear programs to have a unique optimal solution, in the case of integer linear programs, it is possible to have multiple optimal solutions.
This occurs when there are multiple feasible solutions that achieve the same optimal objective value. In such cases, any of the feasible solutions that satisfy the optimality conditions can be considered optimal. Therefore, it is true that an integer linear program can have more than one optimal solution.
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PLEASE HELP
A jar contains only pennies, nickels, dimes, and quarters. There are 16 pennies, 29 dimes, and 24 quarters. The rest of the coins are nickels. There are 96 coins in all. How many of the coins are not nickels? If n represents the number of nickels in the jar, what equation could you use to find n?
Answer:
the answer is 67 coins are not Nickels
Step-by-step explanation:
29+24+16=67 so there is 27 Nickels in the jar
In significant figures whats 28.97 + 45.876
Answer:
74.85 (Plato/Edmentum)
Step-by-step explanation:
#1: 28.97 + 45.876
#2: 74.846
#3: 74.85
As of the 2010 census, there were about 811,147 constituents per state senate district in Texas. What is the only state that had more constituents per senator
The mean is 172, the variance is 34.4, and the standard deviation is 5.86.
The United States has a system of bicameralism, which means that each state has two chambers in its legislature: a lower chamber (such as the Assembly or House of Representatives) and an upper chamber (such as the Senate).
The number of constituents per district in each chamber varies from state to state, and it is usually determined by the state's constitution or by a state redistricting commission.
As of the 2010 census, Texas had about 811,147 constituents per state senate district.
However, this is not the highest number of constituents per senator among all the states.
In fact, the state with the highest number of constituents per senator is California.
According to the U.S. Census Bureau, as of the 2010 census, California had a population of approximately 37.3 million people.
The state's constitution provides for 40 state senators, which means that each senator represents approximately 933,000 constituents.
This is significantly higher than the number of constituents per senator in Texas.
The high number of constituents per senator in California can be attributed to the state's large population and the fact that the number of state senators has not kept up with population growth.
The last time the number of state senators in California was increased was in 1973, when the state's population was around 20 million people.
In conclusion, while Texas has a high number of constituents per state senate district, it is not the only state with a high number of constituents per senator.
California has a significantly higher number of constituents per senator, due to its large population and the fact that the number of state senators has not kept up with population growth.
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which relation is a function? responses image with alt text: a coordinate grid containing a u shape with arrows on both ends that opens to the right. the bottom portion of the u passes through the origin. image with alt text: a coordinate grid with the graph of a circle centered at the origin and passing through the point begin ordered pair 2 comma 1 end ordered pair. image with alt text: coordinate grid with graph of a vertical line at x equals 3.
The the coordinate grid containing a U shape with arrows on both ends that opens to the right and passes through the origin is a function. Therefore, the correct option is option 1.
To determine which relation is a function, you should consider these three graphs:
1. A coordinate grid containing a U shape with arrows on both ends that opens to the right, with the bottom portion passing through the origin.
2. A coordinate grid with the graph of a circle centered at the origin and passing through the point (2, 1).
3. A coordinate grid with the graph of a vertical line at x=3.
A relation is a function if each input (x-value) has exactly one output (y-value).
Let's analyze each graph:1. The U shape with arrows on both ends that opens to the right is a parabola. In this case, for every x-value, there is only one corresponding y-value. Therefore, this relation is a function.
2. The graph of a circle centered at the origin and passing through the point (2, 1) is not a function. This is because there are x-values that have more than one corresponding y-value (e.g., points on opposite sides of the circle sharing the same x-value). Hence, this relation is not a function.
3. The coordinate grid with the graph of a vertical line at x=3 is not a function either. In this case, every x-value (3) has an infinite number of y-values, which violates the definition of a function.
In conclusion, among the given relations, option 1: the coordinate grid containing a U shape with arrows on both ends that opens to the right and passes through the origin is a function.
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Brainliest to correct answer
Answer:
If a relationship between two quantities is not proportional then when the fraction is reduced there should not be an equal ratio and the graph should not be a line that passes through the origin.
hi hello! please help me.
Answer:
x= -4
Step-by-step explanation:
hope it's helpful to you
Answer:
A) x= -4
Step-by-step explanation:
To solve you must isolate the variable. Do this by using the properties of equality to subtract and divide numbers from both sides of the equation. First, subtract 8x to move all x terms to the right side.
-48=12x
Then, divide both sides by 12
-4=x
Tina turners wrists are 2 inches wide and her arms are 4 inches wide but Tina turners thighs are triple the width of the wrists and arms how thick is Tina's thighs?
Answer:
Tina Turner's thighs are 18 inches wide.
Stella uses the expression 0. 40a, where a is the original attendance at a play, to find the reduced attendance at the next performance. Which is an equivalent expression?
0. 60a
1. 60a
a−0. 60a
0. 40(a−1)
The equivalent expression of 0.40a is 0.40(a - 1)
Stella uses the expression 0.40a, where a is the original attendance at a play, to find the reduced attendance at the next performance. A formula for calculating the reduced attendance at the next performance can be represented by this expression 0.40a.
To find the equivalent expression to 0.40a, we have to distribute 0.40 and simplify as shown below:0.40a= (0.40 * a) = 0.40a
Also, 0.40(a - 1) can also be used to calculate the reduced attendance at the next performance.
The equivalent expression to 0.40a is 0.40(a - 1).
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find the surface are and volume of the composite figure
The total volume is,
= 350 + 100
= 450 in³
And, The total surface area is,
= 150 + 70 + 140 + 50
= 410 in²
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
For Top prism:
To find the volume of the top prism, multiply the area of the base by the height. This is 1/2 times width times height times length.
V = 1/2 × l × w × h
= 1/2 × 5 × 10 × 4
= 100 in.
To find the surface area of a prism, find the area of the triangular base and the area of each rectangular side.
Area of the base is,
A = 1/2 bh = 1/2 × 7 × 4 = 14 .
Since there are 2 bases, the area is 28.
Now, Area of the rectangular side is,
A = bh
= 10 x 5 = 50 in².
Since there are two,
Hence, the area is,
A = 2 × 50 = 100
And, The surface area of the prism is ,
50 + 100 = 150 in²
Bottom prism:
To find the volume of the bottom prism, multiply the width times the height times the length.
V = lwh
= 10 x 5 x 7
= 350 in³
And, To find the surface area of the bottom prism, find the area of the base and each side of the house.
A = 10 x 5 = 50 in
A = 10 × 7 = 70 which occurs twice so it has a total area of 140.
A = 5 x 7 = 35 which occurs twice so it has an area of 70
Hence, The total volume is,
350 + 100
450 in³
And, The total surface area is,
= 150 + 70 + 140 + 50
= 410 in²
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Ezra and Benji are playing the game with Harrison. After Ezra doubles his hand's value, he has a total of -12.5 points. What was his hand's value before
he doubled it?
How many elementary events are in the sample space of the experiment of rolling three fair coins? O2 09 O 8 6
very easy trig with pic
Answer:
1st Option
Step-by-step explanation:
Pythagorean Theorem: a² + b² = c²
Step 1: Find the missing leg
2² + b² = 6²
b² = 36 - 4
b = √32
Step 2: Find cosA
cosA = √32/6
cosA = 4√2/6
cosA = 2√2/3
1) Calcule o valor de x nos triângulos retângulos.
6
X
8
R:
Calculi of valor X no's Triangulo's rectangles a) x= 6 +8 b) x= 9+12 c) x=4+5 d)20=4x+3x
A car rental company has 468 cars on their lot. They can rent all 468 cars at a rate of $46 per day. They determine that for every $1 increase in the rental cost, they will rent 3 fewer cars. Find the car rental rate that will maximize revenue for the company.
Given: A car rental company has 468 cars on their lot. They can rent all 468 cars at a rate of $46 per day. They determine that for every $1 increase in the rental cost, they will rent 3 fewer cars. We have to find the car rental rate that will maximize revenue for the company.
Let's start the solution, Let x be the increase in the rental cost Let the original rate be R1=46The rental rate for x is R2=R1+xLet C1 be the cars rented at R1 and C2 be the cars rented at R2C1 = 468C2 = 468 - 3xFrom the given information, it is known that revenue is the product of the rental rate and the number of cars rentedRevenue1 = C1 * R1Revenue2 = C2 * R2Maximize the revenue equation,
We have to take its derivative, Equation of Revenue for C1 = R1 * C1 and Revenue for C2 = R2 * C2So,Revenue equation: R(x) = (468 - 3x)(46 + x)R(x) = 21468 + 115x - 3x^2Revenue'(x) = -6x + 115Differentiating the equation with respect to x Revenue'(x) = 0-6x + 115 = 0x = 19.166R2 = R1 + x = 46 + 19.166R2 = $65.166Thus, the car rental rate that will maximize revenue for the company is $65.166.
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