i don’t know this answer i need help

The area of the largest possible norman window with a perimeter of 25 ft is 43.75 ft²

Let r = the semicircle's radius

h = the rectangle's radius

2r = the window's width

C = 2πr is the formula for the perimeter of a circle,

The perimeter of the semicircle =πr

The perimeter of the window is

P=πr + 2h + 2r = 25

2h + (π +2)r = 25

h = ½[25 - (π + 2)r]

h = 12.5 - (π/2 +1)r ...............(1)

The formula for the area of a circle is A= πr²,  so

½πr² = the perimeter of the semicircle

The area of the window is

A = ½πr² + 2rh.............. (2)

Substitute (1) with (2).

A = ½πr² + 2r[12.5 - (π/2 +1)r] = ½πr² + 25r - (π +2)r²

A = 25r - (π + 2 - π/2)r²

A =  -(π/2 + 2)r² + 25r ........(3)

One way to notice the vertex is to set the first derivative equal to zero.

dA/dr =-2(π/2 + 2)r + 25 = 0

-(π + 4)r  + 25 = 0    

 r = 25/(π + 4)

 r ≈ 3.50 ft .......... (4)

Substitute (4) with (1).

h = 12.5 - (π/2 +1)(3.50) = 12.5 - (2.571× 3.50)

h  = 12.5 - 9.00 = 3.50  

h = 3.50 ft

Area =  1.571(3.50)² + 2×3.50×3.50 = 19.25 + 24.50

Area = 43.75 ft²

So, the area is 43.75 ft².

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Answer:

Solution:

Let another number be x.

Then positive number = 5x

According to the question,

5

�

+

21

=

2

(

�

+

21

)

5x+21=2(x+21)

⇒

5

�

+

21

=

2

�

+

42

⇒5x+21=2x+42

⇒

5

�

−

2

�

=

42

−

21

⇒5x−2x=42−21

⇒

3

�

=

21

⇒3x=21

⇒

�

=

21

3

=

7

⇒x=

3

21

​

=7

Hence another number = 7 and positive number = 7 x 5 = 35.

The correct statements to the given polynomials are  x²-5, x³, x⁴+3x+6, 1,x+2

Polynomial is made up of two terms, namely Poly (meaning “many”) and Nominal (meaning “terms.”). A polynomial is an expression composed of variables, constants, and exponents, combined using mathematical operations such as addition, subtraction, multiplication, and division (No division operation by a variable). Based on the number of terms present in the expression, it is classified as monomial, binomial, and trinomial. For example P(x) = x2-5x+11

Given; To find a polynomial for each of the example.

A polynomial’s degree is the highest or the greatest power of a variable in a polynomial equation. The degree indicates the highest exponential power in the polynomial (ignoring the coefficients). You call an expression with a single term a monomial, an expression with two terms is a binomial, and an expression with three terms is a trinomial. An expression with more than three terms is named simply by its number of terms.

Thus we have the examples to the required polynomial accordingly:

1. A binomial of degree 2 is : x²-5

2. A monomial of degree 3 is: x³

3. A trinomial of degree 4 is: x⁴+3x+6

4. A monomial of degree 0 is: 1

5. A binomial of degree 1 is: x+2

Hence, The examples are x²-5, x³, x⁴+3x+6, 1,x+2

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48.15% people visited one of the three coffee shops on monday

The scholars discovered that;

518 people went to Cool Beans, 974 to Planet Euro, and 1,160 to Frothies.

Assume that x% of Monday's customers at each of the three coffee shops were x.

One hundred thirty-five people went to Cool Beans on Monday.

Of the total number of customers who went to one of the three coffee shops on Monday, 52% went to Cool Beans.

Consequently, 52/100 * x = 135

The calculation for x is (135*100)/52.

x = 260 individuals

On Monday, the following number of visitors visited either PlanetEuro or Frothies:

260-135 =125

Calculating the percentage of Monday visitors to either PlanetEuro or Frothies;

135= 52%

125=?

Cross-product as you

(125*52)/135 =48.15%

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Answer:

You will need to pay $48.06.

Solution:

Given that,

The fixed fee of online recruiting website offers listings is $30,

and $0.42 per word.

Your listing has 43 words,

so,

No.of words*Cost per word = 43*0.42

                                              =$18.06

Total fee for 43 listings =$30 + $18.06

                                                  =$ 48.06

The polynomial function is the product of two different linear factors, (x-2) and (x+3)^2, which means that we have two different roots, x=2 and x=-3

A polynomial function is a function that can be written as constants and n is the degree of the polynomial. The polynomial function y = (x − 2)(x + 3)² is a quadratic function because it has an [tex]x^{2}[/tex] term.

The roots of a polynomial function are the values of x that make the function equal to zero. In other words, they are the solutions to the equation y = 0.

The polynomial function y = (x − 2)(x + 3)² can be factored as (x-2)(x+3)(x+3), which means that we have three different linear factors, (x-2), (x+3), and (x+3) . Each linear factor corresponds to one root of the polynomial.

So the polynomial function y = (x − 2)(x + 3)² has 2 distinct roots. The correct answer is C.

Alternatively, we can also see that the polynomial function is the product of two different linear factors, (x-2) and [tex](x+3)^{2}[/tex], which means that we have two different roots, x=2 and x=-3.

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Answer:

no solution

Step-by-step explanation:

6x - 8y = 10

Divide by 2,

6x/2 - 8y/2 = 10/2

3x - 4y = 5

3x - 4y = 6

3x - 4y = 5 = 6

But actually, 5 ≠ 6

The system shown has no solution. The answer is obtained by solving the linear equations.

What is a linear equation?

The equation with the highest degree of one is a linear equation. This demonstrates that there are no variables in a linear equation with an exponent bigger than one. Such an equation yields a straight line on the graph.

We are given 6x - 8y = 10

On dividing both sides by 2, we get

⇒6x/2 - 8y/2 = 10/2

⇒3x - 4y = 5

But, we are given that 3x - 4y = 6

This shows that 5 must be equal to 6

But, 5 ≠ 6

Hence, the system shown has no solution.

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According to the formula of area of rectangle, the dimensions of the rectangle is 3.6 x 18

The term called area of rectangle is calculated by using the formula

=> A = l x w

where l refers the length of rectangle and w refers the width of the rectangle.

Here we have know that the area of the rectangle is 66 square inches.

And let us consider that W refers the width of rectangle and here we know that the length is 5 inches longer than it is wide so it can be written as 5W.

Then the dimensions of the rectangle is calculated as,

=> 66 = (W x 5W)

=> 66 = 5 W²

=> W² = 13.2

=> W = 3.6

Then the value of length is calculated as,

=> L = 5 x 3.6

=> L = 18

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Answer:

see attached

Step-by-step explanation:

just draw a narrower one, about 1/2 of the x value.

The correct answer i.e. the total area is A. (3 × 13^2) + (2 × 15^2).

The edge of a shape's area is measured. You must divide the length and breadth of a rectangles or square in order to determine its area. A is x times y in size.

The area of a square is composed of (Side) (Side) square units. Once the diagonally, d, is known, the surface of a square is equal to d22 square units. For instance, 8 8, or 64 sq ft is the size of a cube with sides that are each 8 feet long (ft2).

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Answer:

it should be

Step-by-step explanation:

no.c half - open

The side lengths for Quadrilateral EFGH are 4, 5, 6, and 8 units.

Quadrilateral EFGH is a reduction of Quad WXYZ by a ratio of 1:2. To find the side lengths for Quad EFGH, divide the side lengths of Quad WXYZ by 2. Therefore, the side lengths of Quad EFGH will be 4, 5, 6, and 8 units.

There are four sides, four vertices, and four angles in a closed quadrilateral. It is a form of polygon. Quadrilaterals' inner angles add up to 360 degrees in total. The English word quadrilateral is derived from the Latin words quadra, which means four, and latus, which means sides.

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[tex]1\frac{5}{12}[/tex] liter of water Gabriella drink altogether.

A fraction represents a part of a whole.

Gabriella drank 2/3L water before jog

Gabriella drank 3/4L water after her jog

Altogether water she drank (2/3+3/4)

2/3+3/4

LCM of 3 and  4 is 12

8+9/12

17/12

17/12 can be written as mixed fraction [tex]1\frac{5}{12}[/tex].

Hence,  [tex]1\frac{5}{12}[/tex] liter of water Gabriella drink altogether.

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The factorized expressions are (4x - 1)(4x + 5), (2z - 7)(z + 10) and (3x - 8)(2x + 5)

The pair factors of -80 are (-1, 80), (-2, 40), (-4, 20), (-5, 16) and (-8, 10).

The pair factors of -80 in this category is

(-4, 20)

This is so because

-4 + 20 = 16

We have

16x^2 + 16x - 5

So, we have

16x^2 + 20x - 4x - 5

Factorize

4x(4x + 5) -1(4x + 5)

So, we have

(4x - 1)(4x + 5)

For the other expressions, we have

2z^2 + 13z - 70

2z^2 + 20z -7z - 70

So, we have

(2z - 7)(z + 10)

6x^2 - x - 40

6x^2 + 15x -16x - 40

So, we have

(3x - 8)(2x + 5)

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Greta’s capital allocation is 0.37 for the S& P 500 and whereas  for the  hedge fund the captial allocation is  0.63. it is done using the  Capital Allocation formula.

The calculation was done using the Capital Allocation formula, which is Risk Aversion multiplied by Risk Premium divided by the sum of the squared standard deviations of the two portfolios plus the correlation between the two portfolios multiplied by the standard deviation of portfolio 1 times the standard deviation of portfolio 2.

for  S& P 500 : Capital Allocation = Risk Aversion x Risk Premium / (SD^2 + (Correlation x SD1 x SD2)) = 3 x 5.6% / (20.6^2 + (0.3 x 20.6 x 35.6)) = 0.37 .

whereas Hedge Fund: Capital Allocation = Risk Aversion x Risk Premium / (SD^2 + (Correlation x SD1 x SD2)) = 3 x 10.6% / (35.6^2 + (0.3 x 20.6 x 35.6)) = 0.63

The Risk Aversion was given as 3, the Risk Premiums of the S& P 500 and the Hedge Fund were given as 5.6% and 10.6% respectively, and the standard deviations of the S& P 500 and the Hedge Fund were given as 20.6% and 35.6% respectively. The correlation between the two portfolios was given as 0.3. The calculation yielded a capital allocation of 0.37 for the S& P 500 and 0.63 for the Hedge Fund.

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The polynomial which is not equivalent to (5x – 2)(-2x + 4) is -10x + 20x + 4x – 8 and is therefore denoted as option A.

This is referred to as a type of algebraic expression in which the exponents of all variables should be a whole number.

(5x – 2)(-2x + 4) when expanded will give:

-10x² + 20x + 4x – 8 which can be rewritten as the following below:

This is therefore the reason why -10x + 20x + 4x – 8 was chosen as the correct choice.

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The options are:

A) -10x + 20x + 4x – 8

B) 4x + 20x – 10x2 – 8

C) -8 + 24x – 10x2

D) -10x2 + 24x – 8

The number of years it would take for $1500 to earn $350 will be 5.43 years.

Simple interest is the concept that is used in many companies such as banking, finance, automobile, and so on.

The formula for interest is written as,

I = (PRT)/100

Where P is the principal, R is the rate of interest, and T is the time.

The amount of $1500 is invested to earn $350 in simple interest at a rate of 4.3%.

Then the number of years is given as,

350 = (1500 x 4.3 x T) / 100

350 = 15 x 4.3 x T

64.5T = 350

T = 5.43 years

The number of years it would take for $1500 to earn $350 will be 5.43 years.

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If the data for every person who took the tests were tabulated, the correlation between the Math and Verbal SATs would be less than 0.97.

Are the SAT verbal and SAT reading the same test?

The word used to designate the SAT Reading and Writing part is an older, outmoded one. The SAT Verbal section's material is still highly significant today, though. Many of the subjects and abilities from the old SAT Verbal portion are now included in the Evidence-Based Reading and Writing section.

Here we know that the correlation between these 51 pairs of averages was 0. 97.

And as we all know that the Educational Testing Service computed the average Verbal SAT score for each state, as well as the average Math SAT score for each state.

As we know that  the individual people tend to have more variation when you compare them to the average person

then if we look at the individual math and rebels course then there's probably a way more variation.

Here we know that the straight line wouldn't be there.

Then the whole thing would not be the same.

And which tells that It would be less of a correlation coefficient.

So it is less that 0.97.

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The given function is continually increasing at an interval (3, ∞)

An interval is a set of (real) numbers with the property that for every pair of numbers y and z that it contains, it contains also every number between y and z.

Given that, a function f(x) = 2/3|x - 3| + 2

Plot the graph for the function. we get that, the graph is continuously decreasing from ∞ to -3 and continuously  increasing in 3 to ∞

Hence, the given function is continually increasing at an interval (3, ∞)

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1) Note the line of best fit is indicated in the attached graph.

2) Based on the line, the total score (on the y-axis) for the person who didn't study for the test (that is whose hours of homework are zero) is 38.

3) The y-intercept of the line of best fit in graph two is 8

4) The slope of the line of best fit for the scatter plot in graph 2 is -1/2

5) the equation of the line of best fit is given as y = -0.5x + 8

A straight line with the best fit is one that minimizes the distance between it and certain data. In a scatter plot of multiple data points, the line of best fit is used to express a connection.

It is a result of regression analysis and may be used to forecast indicators and price changes.

Note that most of the answers above are self-explanatory.

1) When drawing a line of best fit, you try to keep the line in such a way that it captures as many points as possible while balancing the number of points to the left and to the right of the line as much as possible.

2) Note that the person who didn't study is the person with zero hours of homework. Thus identifying the corresponding grade

3) to determine the y-intercept, just look at the point on the y-axis where the line is touching. The total score that corresponds with zero on the y-axis is 38.

4) the formula for slope is ΔY/ΔX

Since we have the two corresponding points each on the y-axis and on the x-axis, that is:

X1 = 0

X2 = 2

Y1 = 8

Y2 = 7

ΔX = 2 – 0 = 2

ΔY = 7 – 8 = -1

Thus,

Slope (m) = ΔY/ΔX

= -1/2

=-0.5

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20 : 7 is already the simplest term and  there is no need to further simplify.

Ratio can be defined as the given value divided by total value.

When presenting a ratio as an answer:

1. It has to be in the form of integer, it cannot be in the form of fraction or decimals

2. There should be of the equivalent units.

3. It must be in its simplest form

Convert the units in cm

Coloured Fabric = 70 mm

Coloured Fabric = 70 ÷ 10 cm

Coloured Fabric = 7 cm

Find the ratio of the Colour Fabric to White Fabric:

Coloured Fabric = 7 cm

White Fabric = 20 cm

Ratio of  White Fabric : Colour Fabric = 20 cm : 7 cm

Ratio of  White Fabric : Colour Fabric = 20 : 7

Therefore, 20 : 7 is already the simplest term and  there is no need to further simplify.

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The overall balance after 2 years on the account after taxes have been paid is 40.00.

The formula for simple interest is:

I=P*T*R

where P is the principal amount of money, R is the interest rate as a decimal, and T is the time.

We know the principal amount is 2000, the interest rate is 5%, and the time is 2 years.

We must convert the interest rate to a decimal.

Divide by 100 or move the decimal place to two spots to the left.

6/100=0.05 or 5.0 --> 0.5 --> 0.05

Now we know all the values.

P=2000

T=2

R=0.05

Substitute the values into the simple interest formula.

I=2000*2*0.05

Multiply.

I=2000*0.1

I=200

The simple interest is 200.00

Now, every year must also pay 20% income tax on the interest earned annually, for that we have to subtract 20% in simple interest.

overall balance =200*20/100

overall balance=40.

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In interval notation,  the interval of continuity of f(x) is (-∞, 2) ∪ (5, +∞)

A function is said to be continuous in an interval if all the values in the interval satisfy the function.

Since we have the function (x² - 4)/(x² - 7x + 10), we desire to find the interval in which it is continuous. So, we proceed as follows.

For the function f(x) = (x² - 4)/(x² - 7x + 10) to be continuous, then the denominator (x² - 7x + 10) ≠ 0

So, solving this inequality, we have

x² - 7x + 10 ≠ 0

x² - 2x - 5x + 10 ≠ 0

Factorizing, we have that

x(x - 2) - 5(x - 2) ≠ 0

(x - 2)(x - 5) ≠ 0

x - 2 ≠ 0or x - 5 ≠ 0

x ≠ 2 or x ≠ 5

Also, since the coefficient of x² is positive the function f(x) tends to ±∞.

So, the interval of continuity of f(x) is 2 < x and x > 5

So, the interval of continuity of f(x) is (-∞, 2) ∪ (5, +∞)

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He rode 1 kilometer farther than her, which is equal to 1,000 meters.

He rode the farthest as he rode 4 kilometers and she rode 3,000 meters. To calculate how much farther he rode, we need to convert 3,000 meters into kilometers. 1 kilometer is equal to 1,000 meters. So, 3,000 meters is equal to 3 kilometers. Therefore, he rode 1 kilometer farther than her, which is equal to 1,000 meters.

To calculate the difference between the two distances, we can use the following formula:

Difference = km1 - km2

In this example, km1 is 4 kilometers and km2 is 3 kilometers.

Difference = 4 - 3

Difference = 1

Therefore, he rode 1 kilometer farther than her, which is equal to 1,000 meters.

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Answer: I don't know

Step-by-step explanation: good luck

Answer:

A. 3/4

Step-by-step explanation:

[tex]\frac{8}{1}[/tex] x [tex]\frac{3}{4}[/tex] = [tex]\frac{24}{4}[/tex] = 6

6 is less than 8

Answer: NOT Parallel because 98 /= 82  (Alternate angles are equal)

The integer that makes the sentence true is -200

From the question, we have the following parameters that can be used in our computation:

50 - 250

The above expression is not a division sentence

Instead, it is a subtraction sentence

using the above as a guide, we have the following:

50 - 250

Evaluate the difference in the sentence above

50 - 250 = -200

Hence, the integer is -200

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Answer:

D

Step-by-step explanation:

Answer: The game piece is a right trapezoid and its area can be calculated by using the formula:

Area = (b1 + b2) * h / 2

Where b1 and b2 are the lengths of the bases (the parallel sides of the trapezoid) and h is the height.

We can use the information given to find the area of the game piece:

A square with sides measuring 3 inches is attached to a triangle, giving a total combined length on one side of 10 inches.

So, the length of the base of the triangle is 7 inches (10 inches - 3 inches) and the height of the trapezoid is 3 inches.

Now we can substitute these values into the formula:

Area = (3 + 7) * 3 / 2

Area = 10 * 3 / 2

Area = 15 in²

So the area of the game piece is 15 square inches.

Step-by-step explanation: