1. How much percent more than the cost price should a shopkeeper mark his goods so that after allowing a discount of 25% on the marked price, he gains 20% ?




2. When a bicycle is sold at marked price, a profit of 20% is earned by the seller. If a discount of 5% is allowed, the profit is only Rs. 180 earned by the seller. How much did the seller pay for the bicycle?​

Answer:

[tex]y = \frac{1}{10}x - 1[/tex]

Step-by-step explanation:

We are given the equation x - 10y = 10.

We want to write it in slope-intercept form.

Slope-intercept form is given as y=mx+b, where m is the slope and b is the value of y at the y intercept, hence the name.

Notice how in slope-intercept form, only y is on one side.

This is because the equation is basically solved for y in slope-intercept form.

So, we should solve the equation for y.

Start by subtracting x from both sides.

x - 10y = 10

-x           -x

_______________

-10y = -x + 10

Now, divide both sides by -10 to isolate y.

-10y = -x + 10

÷10    ÷10

_______________

[tex]y = \frac{1}{10}x - 1[/tex]

This system of equations has infinitely many solutions.

An equation is a mathematical statement that two expressions are equal. It can be written using numbers, symbols, and mathematical operations such as addition, subtraction, multiplication, and division. Equations can also be used to describe relationships between known values, like a line of best fit for data points. Equations are used in many areas of mathematics, such as geometry and calculus, to help solve problems or to describe physical phenomena.

This can be determined by looking at the coefficients of the variables. Since the coefficients of x in each equation are the same and the coefficients of y in each equation are different, this indicates that the equations are not equivalent and therefore, have infinitely many solutions.

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Therefore , the solution to the given problem of combination comes out to be  1,2,3,4, 5,6,7,8,9 .

Combinations are a method for determining an event overall results where the results' sequence is immaterial. Combinations will be calculated and use the formulae nCr = n! / r! * (n - r)!, were n includes the number of items and r represents the number of things being picked at a time.

Here,

Given: (14) 9,10, 11,12,.., 25

= A group of natural integers between 9 and 25.

(18)

The lowercase letter x follows d and comes before j in the alphabet.

e, f,g, h, I

(22)

the collection of natural numbers below 10.

1,2,3,4, 5,6,7,8,9 .

Therefore, 1, 2, 3, 4, 5, 6, 7, 8, and 9 are the answers to the given combination problem.

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The given expression is:

(23^20-53^19)/(-9)^9

This is a mathematical expression that involves multiple operations. The first step is to understand the order of operations, or PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction)

Parentheses: The expression does not contain any parentheses, so we can move on to the next step.

Exponents: The first term, 23^20, contains an exponent. The exponent operator (^) has higher precedence than the multiplication operator (), so we will simplify the exponent first. 3^20 is equal to 3 raised to the power of 20, which is equal to 3 * 3 * 3 * ... * 3 (20 times) = 59,049. Therefore, the first term is now 2 * 59,049.

The second term 5*3^19 also contains an exponent, so we simplify it in the same way as the first term. 3^19 is equal to 3 * 3 * 3 * ... * 3 (19 times) = 7,29,043. Therefore, the second term is now 5 * 7,29,043.

Multiplication and Division: After simplifying the exponents, we can see that the expression contains both multiplication and division. Since division has the same precedence as multiplication, we can simplify the expression from left to right.

The first term 2 * 59,049 is the product of 2 and 59,049. Multiplying these two numbers gives us 118,098.

The second term 5 * 7,29,043 is the product of 5 and 7,29,043. Multiplying these two numbers gives us 36,45,215.

The third term is the division of two terms. We have (23^20-53^19) / (-9)^9

Subtraction : Now we have the subtraction of two terms (118,098 - 36,45,215)

Now we have the division of two terms (-35,27,117) / (-9)^9. In this step, we are dividing the subtraction with -9 raised to the power of 9

The final step is to simplify the division. -9^9 is equal to -9 * -9 * -9 * -9 * -9 * -9 * -9 * -9 * -9 = -3486784401.

So the final expression is -35,27,117/-3486784401.

The expression is a very large negative number divided by a very large negative number, which results in a very small positive number.

Answer:

The answer is (A) 57

Step-by-step explanation:

[tex]4x^{2} + 3y = 4(3^{2}) + 3(7) \\= 4(9) + 21 \\= 36 + 21 \\= 57[/tex]

Hope this helps!

Answer:

A. 57

Step-by-step explanation:

If x is equal to 3 and y is equal to 7 then the equation should be written like this,

4 x (3)² + 3 x 7

Then solve it

First solve the number in the bracket

(3)² = 9

Then

4 x 9 + 3 x 7

According to BODMAS, we should solve numbers that need to be multiplied

4 x 9=36

3 x 7= 21

Then add those two numbers

36+21

The answer is 57

Hope this helps

The probability of getting 2 reds will be 13.3%.

The probability of a red and a yellow will be 22.2%.

Probability simply means the chance that a particular thing or event will happen. It is the occurence of likely events. It is simply the area of mathematics that deals with the numerical estimates of the chance that an event will occur or that a particular statement is true

From the information the bag contains 1 green, 4 red, and 5 yellow balls. Two balls, are selected at random.

The probability of getting 2 reds will be:

= 4/10 × 3/9

= 12/90

= 13.3%

The probability of a red and a yellow will be:

= 4/10 × 5/9

= 20/90

= 22.2%

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The quotient of the given answer is 0.

The divisor is the integer that divides a given number. The quotient is the sum that we arrive at as a result. The residual is the number that the divisor leaves after partially dividing the original integer.

Any number of equal parts is represented by a fraction, which also represents a portion of a whole. A fraction, such as one-half, eight-fifths, or three-quarters, indicates how many components of a particular size there are when stated in ordinary English.

On dividing 49 by 679 we will get quotient 0 and remainder 49

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Option A is the dot plots which would most likely have the highest standard

deviation.

This is referred to as the measure of the amount of variation or dispersion of a set of values and the one with a higher standard deviation will usually have its average points farther away from the mean which is located at the center while those with a lower  standard deviation will usually have its average points closer to the mean.

From the options provided , option A has a lot of points on 2 and 14 which are further way from the center (mean) and is therefore the reason why it was chosen as the correct choice.

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Outputs represent your y - values in coordinate.

Input represent your x - values in coordinate.

A pair of numbers which describe the exact position of a point on a cartesian plane by using the horizontal and vertical lines is called the coordinates.

We know that;

A relation is said to be a function if set of inputs having one output each.

Hence, In coordinate (x, y);

All x - values represents inputs and all y - values represent outputs.

Hence, Outputs represent your y - values in coordinate.

And, Input represent your x - values in coordinate.

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The coordinate matrix of x relative to an orthonormal basis b in [tex]R^n[/tex] can be found by computing the inner product of x with each basis vector and representing these inner products as the entries of a column vector.

To find the coordinate matrix of x relative to an orthonormal basis b in R^n, we need to express x as a linear combination of the basis vectors in b. This can be done by computing the inner product (dot product) of x with each basis vector and representing these inner products as the entries of a column vector. The resulting vector is the coordinate matrix of x relative to the orthonormal basis b.

For example, let x be a vector in [tex]R^n\\[/tex], b = [tex]{b_1, b_2, ..., b_n}[/tex] be an orthonormal basis in R^n, and let A be the coordinate matrix of x relative to b. Then the entries of A are given by:

A = [tex]( x, b_1 , x, b_2 , ..., x, b_n )^T[/tex] where [tex]x, b_i[/tex] denotes the inner product of x and [tex]b_i[/tex].

It is important to note that the basis b must be orthonormal for the coordinate matrix to have this form, if the basis is not orthonormal, the process will be different.

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The number of mechanical pencils Kimberly own are 61.

What is arithmetic?

In general, the term "arithmetic" (which comes from the Greek word "arithmos," "number") refers to the fundamental concepts of number theory, arts of mensuration (measurement), and numerical computation (that is, the processes of addition, subtraction, multiplication, division, raising to powers, and extraction of roots).

Given:

Jacqueline, Kimberly, and Julia collect mechanical pencils.

Kimberly owns two less than three times the number of mechanical pencils Jacqueline owns.

Julia owns three less mechanical pencils than Jacqueline.

Together, the three collectors own a total of 100 mechanical pencils.

We have to find the number of mechanical pencils Kimberly own.

Let the mechanical pencils of Jacqueline is x.

As Kimberly owns two less than three times the number of mechanical pencils Jacqueline owns.

⇒  The mechanical pencils of Kimberly are 3x - 2

As Julia owns three less mechanical pencils than Jacqueline.

⇒  The mechanical pencils of  Julia are x - 3

The three collectors own a total of 100 mechanical pencils.

⇒  x + (3x - 2) + (x - 3) = 100

                         5x - 5 = 100

                              5x = 105

                                x = 21

⇒ Mechanical pencils does Kimberly own are 3(21) - 2 = 63 - 2 = 61.

Hence, the number of mechanical pencils Kimberly own are 61.

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Correct options are C, D. On simplifying, a^(1/n) = r  can be written as n√a = r and a = rⁿ.

The fundamental guidelines and procedures to simplify any algebraic statement are as follows:

By multiplying factors, remove any grouping symbols like brackets and parenthesis.

If the words contain exponents, use the exponent rule to eliminate grouping.

Add or subtract like terms to combine them.

Add the constants together.

Given,

a^(1/n) = r                                      ...........(1)

It can be written as -

n√a = r

secondly,

multiplying power n on both sides of equation (1)

we get,

a = rⁿ

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The correct transformation is Horizontal Compression, Left 1 , Up 2.

What is transformation?

An operation that manipulates a polygon or other two-dimensional object on a plane or coordinate system is known as a transformation.

The shape in two dimensions before any alteration is known as a pre-image or inverse image. The shape after transformation is the image.

Given: [tex]f(x)=\sqrt{3x+3} +2[/tex]

The parent function of given function is square root function.

[tex]f(x)=\sqrt{x}[/tex]

Shift 1 unit left

[tex]f(x)=\sqrt{(x+1)}[/tex]

Horizontal Compression

[tex]f(x)=\sqrt{3(x+1)}[/tex]

Vertical up by 2 units

[tex]f(x)=\sqrt{3x+3}+2[/tex]

Hence, the parent function [tex]f(x)=\sqrt{x}[/tex], horizontally shrink by a factor of 3 , shift 1 unit to the left, shift 2 units upwards.

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Question: Given the function,[tex]f(x)=\sqrt{3x+3} +2[/tex], choose the correct transformation(s).

Answer:

Step-by-step explanation:

The table that represents a linear function is ob x 0 1 2 3 y 0149

Answer:

7/10

Step-by-step explanation:

steps linked below

Using the distributive property, the algebraic expression 15(2 + r) can be rewritten as: 30 + 15r.

To use the distributive property to rewrite an algebraic expression, you need to multiply the value outside the parentheses by each value inside the parentheses.

For example, if you have the expression "a(b + c)", you would use the distributive property to rewrite it as "ab + ac".

15(2 + r) (given)

15 * 2 + 15 * r

30 + 15r

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The lower bound on the probability that the plant will fill between 9,000 and 11,000 cans on a particular day is at least 1 - 1/10 = 9/10.

What is probability ?

A probability is a number that reflects the chance or likelihood that a particular event will occur.

(a) P(X > 11,000) ≤ E[X] / 11,000

Where X is the random variable representing the number of cans filled in a day, and E[X] = 1,000 is the expected value.

So, P(X > 11,000) ≤ 1,000 / 11,000 = 1/11

(b) P(|X - E[X]| ≥ kσ) ≤ 1/k^2

Where X is the random variable representing the number of cans filled in a day, E[X] = 1,000 is the expected value, and σ is the standard

As we know that for any random variable X, E[X^2] >= (E[X])^2

therefore Var(X) = E[X^2] - (E[X])^2 >= 0.

so the standard deviation of X is

σ = √(Var(X)) = √(1000) = 31.62

We can choose k = (11000-9000)/(2*31.62) = 3.16

so P(|X - E[X]| ≥ 3.16σ) = P(|X - 1000| ≥ 10000) ≤ 1/3.16^2= 1/10

Therefore, the lower bound on the probability that the plant will fill between 9,000 and 11,000 cans on a particular day is at least 1 - 1/10 = 9/10.

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Answer:

$63

Step-by-step explanation:

12-5=7

9*7= 63

Answer:

$63 Is the answer.

Step-by-step explanation:

$12 - $5 = $7
$7 x $9 = $63

Therefore , the solution of the given problem of equation comes out to be the vertex (h,k) is  (3,3).

An expression is a mathematical representation of two equal variables , one on each end of a "equals" sign. Typical issues can be resolved using equations. We commonly look to pre algebra for solutions to problems in real life. The fundamental concepts of mathematics are covered in pre-algebra lessons.

Here,

use the vertex form y=a(x-h)2+k to get the values of a, h, and k.

Given : a =1

h=3

k=−3

Discover the vertex (h,k) (3,3).

So, we discovered the vertex of given equation.

Therefore , the solution of the given problem of equation comes out to be the vertex (h,k) is  (3,3).

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Answer:

7/4

Step-by-step explanation:

4 1/8=33/8

2 3/8=19/8

-----------------

33/8-19/8=14/8=7/4

The value obtained after calculating the first partial product of 26 × 107 is, 214

It is a mathematical technique, by which we do a multiplication operation by doing the sub-parts of the multiplier and then we do separately multiplication, after that we add both the results.

Given numbers,

26×107

Two sub-parts (26) of multiplier

26 = 2×13

First partial multiplier = 2

Second partial multiplier = 13

First partial product = 2×107 =214

Hence, First partial product 214

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The given function is continuous over the domain [-3,-2].

If a function f is continuous throughout its whole domain, it is referred to as a continuous function. A point in the domain of a function f at which the function is not continuous is known as the point of discontinuity of the function. is a perpetual function. The only non-zero number in the domain is 2.

Every polynomial function on R and every rational function on its domain are both continuous. Proof. On R, the identity function g(x) = x and the constant function f(x) = 1 are both continuous.

Either a discrete or continuous domain is possible. A discrete function would have x-values that can stand on their own with no surrounding interval.

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The angle measure used to create each section of the circle graph are (a) 90  (2) 195  (3) 72

The given parameters that will help us to find the angles are:

The measure of the angles are:

1)  number that use train =125/500 * 360 = 90⁰

2) Degree of people airplane is 275/500 *360 = 198⁰

3) Number that use boat = 100/500 * 360 = 72⁰

In conclusion the measurement of the angles for the three means are 90 degrees, 198 degree and 72 degrees respectively

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Answer:

Out of all possible choices you've shown, I'd say the best answer would be D

Step-by-step explanation:

On solving the provided question, we can say that from the graphs the function = [tex]f(x) = 1/2 (3)^x[/tex], it represents a half parabola

The subject of mathematics includes quantities and their variations, equations and related structures, shapes and their locations, and places where they can be found. The term "function" refers to the relationship between a set of inputs, each of which has an associated output. A connection between inputs and outputs in which each input leads to a single, distinct result is known as a function. Each function is given a domain and a codomain, or scope. Usually, f is used to denote functions (x). input is an x. There are four main types of functions accessible. based on the following factors: on functions, one-to-one functions, many-to-one functions, inside functions, and on functions.

from the graphs

the function = [tex]f(x) = 1/2 (3)^x[/tex]

it represents a half parabola

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Answer:

as: 4/3 * (2 * 1/3)

Step-by-step explanation:

Note: parentheses, 2 and 1/3 are being multiplied together first, before being multiplied by 4/3.

Answer:

4

Step-by-step explanation

for a rectangle you have to lengths and 2 width so you will have to have 2w+2 and then times 4w+3 which should equal 56

Changing the compound inequality x > −3 and x < 3 from “and” to “or” will change the solution set

A sentence having two inequality statements connected by the words "or" or "and" is referred to as a compound inequality.

The conjunction "and" denotes the simultaneous truth of both statements in the compound sentence. It is when the solution sets for the various statements cross over or intersect.

The conjunction "or" means that the entire compound sentence is true as long as either statement is true. When "or" appears in a compound inequality, a disjunction is created.

Hence changing “and” to “or” changes the solution set

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Answer: To calculate the percentage decrease in the number of available seats, we can use the following formula:

(original value - new value) / original value * 100

In this case, the original value is 125 (the number of available seats before the reduction) and the new value is 93 (the number of available seats after the reduction). Plugging these values into the formula:

(125 - 93) / 125 * 100 = 32 / 125 * 100 = 0.256 * 100 = 25.6

So, there is a 25.6% decrease in the number of available seats.

Step-by-step explanation: