If 20 articles cost ? 90, then the cost of 9 articles is ?
? 45
? 4.50
? 40.50
? 42

Answer:

Because most of the times they can learn from their answers and the answers are correct.

Step-by-step explanation:

Answer:

n - 5

Step-by-step explanation:

have a good day :)

Answer:

n-5

Step-by-step explanation:

first stated should be at first, and second stated will be at second.

plz mark as brainliest

Answer:

43cm

Step-by-step explanation:

96-10 (5 x2 sides)=86

86/2 sides=43 longest side

The length of the longest side is 43 cm.

A rectangle is a two-dimensional shape where the length and width are different.

The area of a rectangle is given as:

Area = Length x width

We have,

Perimeter of a rectangle = 2 (length + width)

Perimeter = 96 cm

Width = 5 cm

Length = x

Now,

96 = 2 (x + 5)

48 = x + 5

x = 48 - 5

x = 43

Thus,

The longest side is 43 cm.

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Answer:

0.871

Step-by-step explanation:

a. Solve the formula for r.

V = C (1 + r)²

dividing both sides by C, we have

V/C = (1 + r)²

(1 + r)² = V/C

taking square root of both sides, we have

√(1 + r)² = √(V/C)

1 + r = √(V/C)

r = √(V/C) - 1

b. Lew bought a condo 20 years ago for $50,000, and the current value of the condo is $175,000. Assuming the same

rate each year, what has the annual rate of appreciation been? Round your answer to the nearest half a percent.

Since r  = √(V/C) - 1 and V = $ 175,000 and C = $ 50,000

Substituting the values of the variables into the equation for r, we have

r  = √($ 175,000/$ 50,000) - 1

r  = √3.5 - 1

r = 1.871 - 1

r = 0.8708

r ≅ 0.871

1. The degree form of 4π/9 is approximately 228.6°.

2. A positive coterminal angle to -123° that is between 500° and 750° is 677°. A negative coterminal angle to -123° that is between -300° and -500° is -243°.

3. The terminal side of 215° lies in the second quadrant.

4. The radius of the circle is approximately 15.7.

1. The degree form of 4π/9 is approximately 228.6°. To express an angle in degrees, we multiply its radian measure by 180°/π.

2. A positive coterminal angle to -123° that is between 500° and 750° is 677°. A negative coterminal angle to -123° that is between -300° and -500° is -243°. To find a coterminal angle, we can add or subtract 360° as many times as necessary to bring the angle into the desired range.

3.

In the standard position, an angle is measured counterclockwise from the positive x-axis. The positive x-axis corresponds to the 0° angle, the positive y-axis corresponds to the 90° angle, the negative x-axis corresponds to the 180° angle, and the negative y-axis corresponds to the 270° angle. Angles in the first quadrant are between 0° and 90°, angles in the second quadrant are between 90° and 180°, angles in the third quadrant are between 180° and 270°, and angles in the fourth quadrant are between 270° and 360°.

So, the terminal side of 215° lies in the second quadrant.

4.

We can set up the equation l = Cθ/2π and solve for r.

Substituting the given values, we have 56π = (2πr)(120°/180°), which simplifies to r = 56π/(2π) = 28.

Dividing this value by 2, we get the radius of the circle as approximately 15.7.

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Answer:

Area of the lawn = 62493π m^2

Step-by-step explanation:

Answer:

6 for the number of triangles or 7 because all the triangles form a hole triangle

Step-by-step explanation:

Answer: The answer is 6. If you add the triangle that all the small triangles are within, then you would get 7.

The correct answer is option c) 16.

4 x (9 ÷ 3 ) + 6 - 2

Simplification can define as exicute the operations according to the mathematical operators.

4 x (9 ÷ 3 ) + 6 - 2
by PEMDAS

Bracket solved 1 st
than division further mortification, addition and substraction.

4 x (3 ) + 6 - 2
12 + 6 - 2
= 16

Thus the required value of simplification is 16.

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Answer:   11......................................................................................

Answer:

1.425

Step-by-step explanation:

when 1pound is 0.95

then 1.5should be multiplied by 0.95

Therefore , the solution to the given problem of interest comes out to be $272.

Simple interest is calculated by dividing initial capital by the interest rate, the duration, and other variables. The formula employed in marketing is simple return = principle + interest plus hours. This approach is the simplest way to calculate interest. Calculating interest as a percentage of the principle sum is the most common approach. For instance, he may only pay his portion of the interest if he borrowed $100 from a friend and agreed to pay it back with 5% interest. $100 (0.05) = $5. You should pay interest when you make loans, and you also must pay interest when you lend it. Usually, interest is calculated as a portion of a loan.

Here,

Given: $250 in principal

a 2.2% interest rate

and a 4-year term

To discover the basic interest:

Using this formula

Simple interest is equal to

=>P*R*T/100,

=> 250*2.2*4/100

=> 22.

Total amount after 4 years = 250 + 22 =272

Therefore , the solution to the given problem of simple interest comes out to be $272.

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Answer: Tonya's calculation is incorrect because she mixed units of measurement. She used feet to measure one dimension of the room (10 feet) and inches to measure the other dimension (120 inches) and then calculated the area as 10 x 120 = 1200 square feet.

Area is a measure of the amount of space inside a two-dimensional shape, and it's typically measured in square units. To calculate the area of a rectangular room, you multiply the length of the room by the width of the room,

However in this case, Tonya used different units of measurement for length and width (feet and inches), and therefore the answer is incorrect.

You would need to convert inches to feet before multiplying 10 feet by 120 inches to get the area.

120 inches = 10 feet

So, the correct calculation of the area would be 10 feet * 10 feet = 100 square feet

It's worth mentioning that before calculating any area or volume, it's important to make sure that all units of measurement are consistent and the same.

Step-by-step explanation:

An equation is y = -4x/3 + 10.

A graph of the equation is shown in the image attached below.

In order to write and graphically solve an equation that model this situation, we would assign variables to the number of pound of peaches and number of pounds of apples respectively, and then translate the word problem into algebraic equation as follows:

Next, we would translate the word problem into an algebraic equation as follows;

$2/pound × Pounds of peaches = 2x.

$1.50/pound × pounds of apples = 1.50y

Combining the two expressions above, we have the following:

2x + 1.50y = 15

Making y the subject of formula, we have:

1.50y = 15 - 2x

y = (15 - 2x)/1.50

y = -4x/3 + 10

Therefore, an equation in slope-intercept form that relates the variables is y = -4x/3 + 10.

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Answer:

Step-by-step explanation:

Find z-score:

Get the rank from the z-table:

Function: A function is a mathematical relationship between two sets of values, where each element in the first set (called the domain) is related to exactly one element in the second set (called the range). A function can be represented by a formula, equation, or graph, and it describes how one set of values is related to another.

Domain: In a function, the domain is the set of all possible values that can be used as input for the function. It is the set of values that the function operates on.

Range: In a function, the range is the set of all possible values that can be produced as output by the function. It is the set of values that the function produces as a result of operating on the domain.

Vertical line test: The vertical line test is a method used to determine whether a graph represents a function.

Hope This Helps You!

Answer:

first option

Step-by-step explanation:

y = 3 is a horizontal line parallel to the x- axis and passing through all points with a y- coordinate of 3

x + y = 4 ← is the equation of a straight line

find the x and y- intercepts

to find the y- intercept let x = 0 in the equation and solve for y

0 + y = 4 , that is

y = 4 ⇒ (0, 4 ) is a point on line

to find the x- intercept let y = 0 in the equation and solve for x

x + 0 = 4 , that is

x = 4 ⇒ (4, 0 ) is a point on the line

the graph representing the system is

a horizontal line y = 3 and another line passing through (0, 4 ) and (4, 0 )

Answer:

Domain: All real numbers

Range: All real numbers greater than or equal to -1

Combination of variables x+y=7. 2x-y=-1 has (5/2, 2) as its solution. For each value of the variables, an identity is true.

Its simplest form is thought to be the number's smallest equivalent fraction. How to determine the simplest form. Look for shared factors in the denominator and numerator. A fractional number can be checked to discover if it is a prime number. A statement having two quadrilateral and an equal sign in the middle is referred to as a mathematical equation. Every variable's degrees are listed in descending order in the general form of any equation. The formula for a linear equation is x + b = 0. The general form of a two-variable linear equation is an x + b y + c = 0. (or something similar). Either contingent equations or identities are categories for equations. An identity holds true for whatever value of the variables.

given

x+y=7

2x-y=-1

8x=20

x= 5/2

-4y = -8

y = 2

Combination of variables x+y=7. 2x-y=-1 has (5/2, 2) as its solution. For each value of the variables, an identity is true.

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Answer:

True.

Step-by-step explanation:

It explains itself right

The option that best describes X on the scatterplot is;

C: Outlier

Let us first define the terms in the given options before we analyze the scatterplot.

1) Negative correlation is defined as a relationship between two variables whereby one variable increases while the other decreases, and vice versa.

2) A nonlinear relationship is also referred to as nonlinear association, and it exists when a constant change in the independent variable does not result in a constant change in the dependent variable.

3) An outlier is defined as a data point that differs significantly from other observations.

4) Clusters are small populations that a wider population is divided into.

Now, from the scatter plot, we see that X is isolated from the plotted points which tells us that it differs greatly from the other points and as such it fits the definition of an outlier.

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The missing options are;

A. negative correlation

B. nonlinear association

C. outlier

D. cluster

Answer:

true

Explanation

1. if a man has a hundred apples and like to share between 20 men. this has to be equal.

5 to 1man.

Answer:

124 units squared

Step-by-step explanation:

A(parallelogram) = 8 x 10 = 80

A(semicircle) = πr²/2

however, we need to use the Pythagorean Theorem to find 'r'

r² + 6² = 8²

r² = 84-36

r² = 28

r = [tex]\sqrt{28}[/tex] = [tex]\sqrt{4}[/tex]·[tex]\sqrt{7}[/tex] or 2[tex]\sqrt{7}[/tex]

A = π(2√7)² / 2

A = 4·7π / 2

A = 14π which is approx 44

Total Area = 44 + 80 = 124

Answer:

x = 4[tex]\sqrt{3}[/tex]

Step-by-step explanation:

using the cosine ratio in the right triangle and the exact value

cos30° = [tex]\frac{\sqrt{3} }{2}[/tex] , then

cos30° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{x}{8}[/tex] = [tex]\frac{\sqrt{3} }{2}[/tex]  ( cross- multiply )

2x = 8[tex]\sqrt{3}[/tex] ( divide both sides by 2 )

x = 4[tex]\sqrt{3}[/tex] ( exact value )

Step-by-step explanation:

SOHCAHTOA

CAH-

Cosine●= adj/hyp

cos30= y/8

0.8660=y/8

Cross multiply

0.8660×8=y

y=8×0.8660

y=6.928

Answer:

225 in.²

Step-by-step explanation:

Surface area of triangular prism = bh + (s1 + s2 + s3)*L

Where,

b = 4.5 in.

h = 6 in.

s1 = 7.5 in.

s2 = 4.5 in.

s3 = 6 in.

L = 11 in.

Plug in the values

Surface area = 4.5*6 + (7.5 + 4.5 + 6)*11

Surface area = 27 + 198 = 225 in.²

0.36d³ - 4.31d² - 2.5d - 2 = 0 is the function and the graph of the function is given below -

function is a mathematical phrase, rule, or law that establishes the connection between an independent variable and a dependent variable (the dependent variable).

y = x² is an illustration of this. Any input for x yields a single output for y. Because x represents the input value, one can state that y is a function of x.

To determine the number of days after the game's release that was played by the same number of students for the two functions S^1(d) and S^2(d).

Here, the functions each model the number of students S.

played an online video game d days.

We need to set the two functions equal to each other and solve for d.

S^1(d) = S^2(d)

or,  0.45d³ - 3d² + 4.75d + 16  = 0.09d³ - 1.31d² + 7.25d + 18

Subtracting 0.09d³ - 1.31d² + 7.25d + 18 from both sides we get:

or, 0.36d³ - 4.31d² - 2.5d - 2 = 0

So, the graph becomes:

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