A stock lost 8 1/4 points on Monday and then another 2 3/4 points on Tuesday. On Wednesday, it gained 12 points.
What was the net gain or loss of the stock for these three days?

division

john stops at toy store a to buy 16 toy cars. Toy store A sells 6 toy cars for $4.20. John stops at toy store b and sees that they sell 4 toy cars for $3.80. How much money did John save by buying toy cars at toy store A?

Result is x = - 2 and y = 1.6 so the ordered pair ( -2, 1.6) is the solution of the system equations.

It is a mathematical expression that shows the equalities between two or more terms. There are different types of equation such as linear equation, quadratic equation, exponential equation and so on.

Given, the two systems of equation.

y = - 0.5x + 0.6

and y = x + 3³₅

rewrite the second equation and get y = x +18/5

                                                       5y = 5x + 18 ....  equation 2

                   the first equation is multiplied by 5 and we get.

                                               5y = - 2.5 x + 3

                                               5y = 5x +18

                                            -          -     -

                        we will now solve the above equations by addition method.

                                       0 = - 7.5 x - 15

                                    7.5 x = - 15

                                     x = -2

        putting the value of x in any equation, we get the value of y = 1.6

    x = - 2 and y =1.6

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The solution is

a) The ratio of x values to the y values from the table is 2 : 3

b) The ratio of x values to the y values from the graph is 2 : 3

c) The ratio of x values to the y values from the table and graph is equivalent

The proportion formula is used to depict if two ratios or fractions are equal. The proportion formula can be given as a: b::c : d = a/b = c/d where a and d are the extreme terms and b and c are the mean terms.

The proportional equation is given as y ∝ x

And , y = kx where k is the proportionality constant

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Given data ,

Let the proportion be represented as A

Now , the equation will be

Let the x values from the table be x = { 8 , 10 , 12 }

Let the y values from the table be y = { 12 , 15 , 18 }

Now , y = kx , where k is the proportionality constant

Substituting the values in the equation , we get

12 = k ( 8 )

Divide by 8 on both sides of the equation , we get

k = 12/8

k = 3/2

So , the ratio of x values to the y values is 1/k = 2 : 3

Now ,

15 = k ( 10 )

Divide by 10 on both sides of the equation , we get

k = 15 / 10

k = 3/2

So , the ratio of x values to the y values is 1/k = 2 : 3

And ,

18 = k ( 12 )

Divide by 12 on both sides of the equation , we get

k = 18/12

k = 3/2

So , the ratio of x values to the y values is 1/k = 2 : 3

From the graph , the ratio is also 2 : 3

Hence , the ratio of x to y is given by 2 : 3

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The sum of three consecutive numbers for 150 is 49,50,51.

Three consecutive numbers:  x+(x+1)+(x+2)

x+x+1+x+2= 150

3x+3 = 150

3x = 150-3

3x= 147

X = 147/3

49 =x

But we also need to find (x+1) and (x+2)

49+1= 50

49+2= 51

49+50+51 = 150

The three consecutive numbers are 49,50,51.

Meaning: Numbers that follow one another numbers sequentially are known as consecutive numbers. The difference between any two numbers is always 1. A series of numbers' mean and median are equal. If n is a number, then it follows that n, n+1, and n+2 are also numbers. Examples. 1, 2, 3, 4, 5.

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On solving the provided question, we can say that  the given function, f(6)=26.

 where a, b, and c are numbers and an is not equal to zero, is  quadratic function. A parabola is the shape of a quadratic function's graph. Although the "width" or "steepness" of a parabola can vary as well as its direction of opening, they all share the same fundamental "U" shape.

f(n^2) = f(n) + 6

On putting n=2,

we get,

f(4) = f(2^2)  = f(2) + 6 = 8 + 6 = 14

On putting n=4, we get

f(16) = f(4^2) = f(4) + 6 = 14 + 6 = 20

On putting n=16, we get

f(256) = f(16^2) = f(16) + 6 = 20 + 6 = 26

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These types of questions are categorized under exponential equations which involve addition, subtraction, multiplication, and division of exponents.

Exponents is the term used to describe a way to represent huge numbers using powers. In other words, the exponential describes how many times a number has been multiplied by itself. Various rules of exponents are presented according to the capacities they possess.

The following rule governs multiplication: Add the exponents while maintaining the base's consistency.

When bases are raised by a power of two or more, multiply the exponents while maintaining the original base.

Division Rule: When dividing like bases, take the exponent of the denominator and divide it by the exponent of the numerator, keeping the exponential base constant.

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The angles of the rhombus are

             m∠ADC = 58°

             m∠BCD = 122°

What is a rhombus?

An example of a quadrilateral is a rhombus. It is a unique instance of a parallelogram in which the diagonals bisect each other at a 90° angle and all sides are equal.

The properties of a rhombus are:

From the figure,

In ΔDOC.

∠ODC = 180° - ( 90+61) = 29°

The diagonal bisects ∠ADC

So ∠ADC = 2∠ODC = 2 × 29° = 58°

Since the diagonal bisects the angle, ∠BCD = 2∠ACD

                                                                           = 2×61° = 122°

Therefore the angles of the rhombus are

             m∠ADC = 58°

             m∠BCD = 122°

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∠1and∠2 form a linear pair, so by the Supplement Postulate, they are supplementary. That is, m∠1+m∠2=180°. m∠2+m∠3=180°.

We must determine the dimensions of angles 1 and 2. The geometric property can be used to: When two chords collide inside of a circle, the angle that is created is half the total of the intercepted arcs of the chords. In light of this, m1 = 50° and m2 = 130°.

According to the diagram, the angles 1 and 3 are vertical, and m1 = 90. Since their measurements are equivalent, m3 = 90 and 1 and 2 are additional. Angles 1 and 2 compliment one another. Two additional angles, the total of whose measurements equals 180 degrees.

The angles 1 and 2 complement one another. Because they have a similar side, angles 1 and 2 are neighbouring angles. Adjacent angles are two angles in a plane that do not share interior points but do share a vertex and a side.

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Answer:

First tank = 13 fish

Second tank = 13 fish + 8 more fish

13 + 8 = 21 fish in the second tank.

Answer:

125 days

Step-by-step explanation:

1.) First, you need to make the number equivalent!

1.5L=1500mL

2.) Then you need to divide 1500mL by how much she drinks every day!

1500mL divide by 12mL = 125 days

So the carton will last 125 days

:) Hope you have a good day!

Answer:

the carton will last for 125 days

Step-by-step explanation:

carton contain 1.5L

1.5L= 1.5×1000ml

= 1500ml

1day=12ml

1/12 ×1500 days = 1500ml

125 days = 1500ml

If Ellis drink 12ml of yoghurt everyday then the carton with 1.5L will last for 125 days.

The answers to each part of the labelled graph is given below.

A function describes a relationship between a dependent and independent variable. Example -

y = f(x) = 5x + 9

Given are the distance - time (x{t}) and the velocity - time, (v{t}) graphs as shown in the image.

We can conclude for each part of the graph as -

The object is moving in the forward direction at a constant velocity.

The object is not moving.

The object is slowing down in the backward direction.

The object is changing directions.

The object is speeding up in the forward direction.

Therefore, the answers to each part of the labelled graph is given above.

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The inequalities that represent the situation can be presented as follows;

x + y ≤ 13

16·x + 6·y ≥ 120

Please find attached the graph of the inequality created with MS Excel

An inequality is a non equal comparison between expressions, quantities, or numbers.

The specified information are;

The amount Gabriella makes lifeguarding = $16 per hour

The amount she makes walking dogs = $6 per hour

The maximum number of hours Gabriella can work in a week = 13 hours

The minimum amount Gabriella must earn in a week = $120

Let x represent the number of hours Gabriella spends lifeguarding, and let y represent the number of hours Gabriella spends walking dogs.

The system of inequalities that can be obtained based on the above details are;

The graph of the above inequalities can be obtained by making y the subject of the inequalities as follows;

y ≤ 13 - x

y ≥ (120 - 16·x)/6 = 20 - (8/3)·x

y ≥ 20 - (8/3)·x

The feasible region is in the triangle with vertices (13, 0), (7.5, 0), (4.2, 8.8)

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Answer:

The "solution" is the intersection point of the two lines when drawn on a graph plot.

Explanation:

If a graphical plot is made with sufficient resolution linear equations may be solved by observing the solution point(s) on the graph coordinates.

Based on whether the function is increasing or decreasing, the slope values are calculated. Then, the required slope values of A, B, C, D, E, and F are 1/2, 0, 1, 3, -3, and -1.

We match the slopes with the points in the given graph. For this, we must know that,

We may determine the rate at which the function is increasing or decreasing by measuring the slope's magnitude. Here, in this graph, first, the slope is zero at B. Therefore, the value of the slope in B is zero (0).

We can determine from the graph that the slope is descending at points E and F. Additionally, the slope is ascending at points A, C, and D.

Therefore, slope D> slope C> slope A> slope B. So, the slope values for D, C, and A are 3, 1, and 1/2 respectively.

Also, slope F> slope E. So, the slope values for F and E are -1 and -3.

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By comparing the population range to the mean of the sample ranges, the answer will be D) The population range equal the youngest official at the time of death and the mean of the sample ranges is equal to the oldest official at the time of death.

Creating a tonne of random numbers between 40 and 70 points so that we can see that the population range is equal to 70. That is presumably the oldest value that is still valid. The population range is the sum of the data generated at the highest level and the lowest level. The population range is now 30 points. by taking a handful of random samples.

We want a sample table containing random samples of the data so we don't have to worry about this. Going through the samples with the new table that will be generated here and want to find this range by taking the max of each sample. Subtracting the mean from each sample from the range samples from 1 to 10. The range for the initial data was 30 points because the entire range was 40 to 70 points; nevertheless, we can observe that this range varies from 64 to 70 points.

We made the table because we wanted the mean of the average of our separate ranges to be 21.7. The mean value of the ranges in 100 samples will be discovered if the sample size is increased. A sample's range is not representative of the population. We can infer that we do it since the samples' range and average range are greatly dissimilar.

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1.)Monomial 2.) Constant term 3.) Formula 4.) Expression 5.)Variable.

A monomial is defined as an algebraic expression with one term, but it can have many variables and higher degrees. It can also be defined as the product of a number and variable(s).

Constant term is defined as the term that contains only a number with no variables.

A formula is defined as an equation that uses variables to state a rule term.

An expression is defined as one term or multiple terms connected by an addition or subtraction sign expression.

A variable a letter or symbol used to represent an unknown number formula.

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The original value for the first angle so that the angle measures form a triangle is 39.5°

For any triangle to be formed, its three interior angles must sum up to 180°. Thus the sum of the interior angles of a triangle is 180°

Considering, the angles: 115.1°, 47.5° and 93°, their sum which is 255.6° is not equal to 180° so they cannot form a triangle.

but a new value represented by x for the first angle 115.1° can be derived as follows;

x + 47.5° + 93° = 180°

x + 140.5 = 180° {subtract 140.5° from both sides}

x = 180° - 140.5°

x = 39.5°

Therefore, the new value for the first angle 115.1° that will make the angle measures form a triangle is 39.5°

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Dividing 3x³ - 4x² - 9x + 15 by 3x + 5. will yield a quotient of x² - 3x + 2 and a remainder of 5 that is (x² - 3x + 2) + 5/(3x + 5).

Applying the long division method will require us to; divide, multiply, subtract, bring down the next number and repeat the process to end at zero or arrive at a remainder.

We shall divide the 3x³ - 4x² - 9x + 15 by 3x + 5 as follows;

3x³ divided by 3x equals x²

3x + 5 multiplied by x² equals 3x³ + 5x²

subtract 3x³ + 5x² from 3x³ - 4x² - 9x + 15 will result to -9x² - 9x + 15

-9x³ divided by 3x equals -3x

3x + 5 multiplied by -3x equals -9x² - 15x

subtract -9x² - 15x from -9x² - 9x + 15 will result to 6x + 15

6x divided by 3x equals 2

3x + 5 multiplied by 2 equals 6x + 10

subtract 6x + 10 from 6x + 15 will result to a remainder of 5

Therefore by the long division method, 3x³ - 4x² - 9x + 15 by 3x + 5 gives a quotient x² - 3x + 2 and a remainder of 5 and can be written as (x² - 3x + 2) + 5/(3x + 5).

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Question 20

The quadrilateral is a rhombus because there are four congruent sides. The quadrilateral cannot be more specifically classified as a square because one of the interior angles is not a right angle.

Question 21

The quadrilateral is a parallelogram because the diagonals bisect each other.

Question 22

The quadrilateral is a square because it is a rhombus (four congruent sides) with a right angle.

If A=(4,-5) and 8 (7,-9), 7 units is the length of AB

distance = √( (7−4)^2 + (−9−(−5))^2 )

Plugging in the numbers and solving, we get:

distance = √( (3)^2 + (−4)^2 )

distance = √( 9 + 16 )

distance = √49

distance = 7 units

Therefore, the length of AB is 7 units.

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The scale factor that would be applied to Figure A to produce Figure B is 10/3 = 3 (1/3).

By scaling, we can create a drawing of an object that corresponds to the object's true size. In geometry, scaling refers to either growing or reducing figures in order to preserve their fundamental shape. Similar figures are those that have been scaled.

Given two pentagons in Figure A and figure B.

We are asked the scale factor from figure A to figure B.

Hence the final figure is figure B and the initial figure is Figure A.

The scale factor of any figure is defined as formulated as:

Scale factor = Dimensions of final figure ÷ Dimensions of original figure

According to the given figures we can observe that:

Length of the base of the pentagon in figure A is 5 inches, and that of figure B is 1 (1/2) = 3/2 inches.

Substituting the dimensions in the formula of the scale factor we have:

Scale factor = 5 ÷ (3/2)

Scale factor = 10/3

Converting into mixed fraction:

10/3 = 3 (1/3)

Hence, the scale factor that would be applied to Figure A to produce Figure B is 10/3 = 3 (1/3).

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The onto functions (surjective functions) are:

c. f(m, n) = m + n + 1.

At first we have to identify onto (surjective) functions from Z x Z to Z, we need to check if each element in the codomain (Z) has at least one preimage in the domain (Z x Z).

a. f(m, n) = 2m - n

This function is not onto because for odd numbers in the codomain (Z), there is no pair of integers (m, n) in the domain that will map to them.

b. [tex]f(m, n) = m^2 - n^2[/tex]

This function is not onto because for negative numbers in the codomain (Z), there is no pair of integers (m, n) in the domain that will map to them.

c. f(m, n) = m + n + 1

This function is onto. For any integer 'z' in the codomain (Z), we can find a pair of integers (m, n) in the domain such that m + n + 1 = z.

For example, if z = 0, we can choose m = 0 and n = -1, and then m + n + 1 = 0.

d. f(m, n) = |m| - |n|

This function is not onto because negative numbers in the codomain (Z) cannot be obtained from the domain (Z x Z).

For example, there is no pair of integers (m, n) in the domain that maps to -1.

Hence, The onto functions (surjective functions) are:

c. f(m, n) = m + n + 1.

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Answer:

A) 10

Step-by-step explanation:

3(8)(5) / 6(2) = 120/12 which equals 10

Answer: A = 10

Step-by-step explanation:

substitute the value of the variable into the equation and simplify

Hope this helps !

Answer:

most appropriate is y=3x - 13 but it is not the correct one.comparing y=3x-13 with y=mx+c the we get,m(slope)=3 whereas comparing y=X+4 with y=mx +c,we get m(slope)=1.But the slopes of parallel lines are always equal.

The correct equation for the line is y=X -1.

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263,187.70 rad / hour is the angular velocity of the nail in radians per hour.

The equation relating angular velocity and linear velocity is:

w = v / r

where,

w = angular velocity, v = linear velocity, and r = radius

Since r is in inches, convert v to inches:

v = (54 miles per hour) * (63360 inches / mile)

v = 3,421,440 inches / hour

Solving for w:

w = (3,421,440 inches / hour) / 13 inches

w = 263,187.70 rad / hour

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8 148

- 2 077

______

6 07 1

_______

you cannot minus 7 from 4 so you borrow from the next number which is 1 then it will be 14-7 and 0-0

Answer:

Step-by-step explanation:

9.5

Answer:

Step-by-step explanation:

y=4x + (7/2)

when x=5

y=4(5)+ (7/2)

 =20+3.5             or         20+ (7/2)

 =23.5                 or          (40+7)/2 =47/2 =23.5

So, here on solving the provided question, we can say that  [tex]5^{2/3}[/tex] to write it without exponent = [tex]25^{1/3} = 1.70997594668[/tex] and [tex]4^{-3/2} = 64^{1/2} = 8[/tex]

Exponentiation, often known as "b raised to the nth power," is a mathematical operation denoted by the symbol bn that involves two numbers: a base number, b, and an exponent, or power, n. Exponents show how many times a number has been multiplied by itself. As an illustration, 2-3 (written as 23) denotes: 2 x 2 x 2 = 8. 23 is not equivalent to 2 + 3 = 6. Recall that an integer raised to the power of one equals itself. A approach to express huge numbers as powers is through the use of exponents. Exponent, then, is the quantity that indicates how many times a number has been multiplied by itself. As an illustration, 6 is multiplied by 4 to provide 6 x 6 x 6 x 6. It may be expressed as 64.

here,

we have [tex]5^{2/3}[/tex] to write it without exponent = [tex]25^{1/3} = 1.70997594668[/tex]

and [tex]4^{-3/2} = 64^{1/2} = 8[/tex]

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Answer:

How many couples bought tickets?

50

Step-by-step explanation:

s + 2c  = 196              Eq. 1

6s + 10c = 1076          Eq, 2

s = single tickets

c = couple tickets

From Eq. 1:

s = 196 - 2c                 Eq. 3

Replacing Eq. 3 in Eq. 2:

6(196-2c) + 10c = 1076

(6*196 + 6*-2c) + 10c = 1076

(1176 - 12c) + 10c = 1076

1176 - 2c = 1076

1176 - 1076 = 2c

100 = 2c

c = 100/2

c = 50

From Eq. 3:

s = 196 - 2c

s = 196 - 2*50

s = 196 - 100

s = 96

Check:

From Eq. 2:

6s + 10c = 1076

6*96 + 10*50 = 1076

576 + 500 = 1076