Using technology, calculate the weighted mean of the rors for each portfolio. based on the results, which list shows a comparison of the overall performance of the portfolios, from best to worst? portfolio 3, portfolio 1, portfolio 2 portfolio 2, portfolio 3, portfolio 1 portfolio 1, portfolio 2, portfolio 3 portfolio 3, portfolio 2, portfolio 1

Answer:

4f^2/3 divided 1/4f 16f^3/3 f/3 3/16f^3 3/f

✓ Lets use algebra and simplify:[tex]\frac{\frac{4f^{2}}{3}}{\frac{1}{4f}} \\=\frac{4f^{2}}{3}* \frac{4f}{1} \\=…

Answer:

A)- 65

B)- 25

c)- 25

To find A- pay attention to the bottom..add 60+55 then subtract that from 180

yu get 65..now we know that 65+90= 155 subtract that from 180 you get 25. so now we have B..B and C are congruent meaning they are equals

hope this helps

A pharmacist wants to mixture of 40 % saline solution with a 12% saline solution to get 119 ml. of a 32% saline solution. He used 85 ml of 40% saline solution and 34 ml of 12% saline solution.

Mixture word problems require you to combine two or more separate items, and then calculate some quantity of the resulting mixture (such as a percentage, price, or number of liters, for example). There will always be some type of "rate," like miles per hour or price per pound. Mixtures are substances that contain two or more distinct substance categories. To separate them, utilize physical tools. Examples include air, different gases, a mixture of sugar and water, a solution of salt and water, and so on.

Given,

A pharmacist wants to mixture of 40 % saline solution with a 12% saline solution to get 119 ml. of a 32% saline solution.

Equation:

X + y = 119

y = 119 - x

0.40x + 0.12y = 119 of 0.32

0.40x + 0.12y = 38.08

Using y = 119 -x

0.40x + 0.12(119 - x) = 38.08

0.40x + 14.28 - 0.12x = 3808  Eq(2)

0.28x = 23.8

x = 85

y = 119 - 85

y = 119 - 85

y = 34

Equating values in equation (2),

0.40(85) + 0.12(34)

34 + 4.08

38.08

A pharmacist wants to mix a 40 % saline solution with a 12% saline solution to get 119 ml. of a 32% saline solution. He used 85 ml of 40% saline solution and 34 ml of 12% saline solution.

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Answer: I would say it is 2 and 3

Step-by-step explanation:

I can't be 1 ben franklin was not the one fooling the king and France

It can't be 4 because Mesmers force did not exist.

The given circle equation  [tex]x^2+4x+y^2-2y-4[/tex]=0 has center(-2,1) and radius r=3.

What is circle equation?

 For all values of g, f, and c, the general equation of any type of circle is written as x2 + y2 + 2gx + 2fy + c = 0. The collection of all points in a plane that maintain a fixed, finite distance r from a fixed point is known as a circle. O = (a,b). The definition of a circle on the coordinate plane can be expressed using the equation of a circle. The equation is where r is the radius and if the centre of the circle is at the origin of the coordinate plane.

Here the given circle equation is,

=> [tex]x^2+4x+y^2-2y-4[/tex]=0

=>[tex]x^2+4x+y^2-2y =4[/tex]

[tex]= > x^2+4x+4+y^2-2y+1=4+4+1\\= > (x+2)^2+(y-1)^2=9[/tex]

we know that equation of circle is [tex](x-a)^2+(y-b)^2=r^2[/tex]

Here (a,b)= center and r is radius.

=> [tex](x+2)^2+(y-1)^2=3^2[/tex]

Then the Center (a,b)=(-2,1) and radius r=3.

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One of the unknown adjacent angle measures 48.3 degrees.

The adjacent angles are next to each other and hence are calculated by performing addition of the constituent angles. Let us assume the unknown adjacent angle be x.

Forming the equation based on x, adjacent angles and it's sum

104.7 + x = 153

Rewriting the equation as per the x

x = 153 - 104.7

Performing subtraction on Right Hand Side of the equation to find the value of x

x = 48.3 degrees

Thus, the measure of the adjacent angle is 48.3 degrees.

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Answer: its 48.3

Step-by-step explanation:

x+104.7= 153                                                                                                                 -104.7     -104.7                                                                                                                      =48.3

The number of times Aarf the Dog bark for 15 seconds if the dog starts barking at midnight and stops at 1:01 AM is 91.5 times

Total time of barking and silence = 15 seconds + 25 seconds

= 40 seconds

Difference in time = 1:01 AM - 12:00 am

= 1 hour 1 minutes

Convert hours and minutes to seconds

1 hour 1 minutes = 61 minutes × 60 seconds

= 3,660 seconds

Number of times Aarf the Dog bark for 15 seconds = Total hours Aarf dog barks / Total time of barking and silence

= 3,660 / 40

= 91.5 times

So therefore, the number of Aarf the Dog bark for 15 seconds is 91.5 times

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Marcus would need to save for 24 weeks in order to purchase a new electronic keyboard.

A mathematical assertion in which you use mathematical symbols to demonstrate that two sums are equal.

As per specified data-

Let 'x' be the number of weeks required to complete the amount.

The equation becomes.

378 = 15.75x

For the number of week required.

x = 378/15.75

x = 24

Thus, Marcus would need to save for 24 weeks in order to purchase a new electronic keyboard.

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The number of  boys and girls in a class of 150 students is 90 and 60 respectively.

RATIO:

Comparing two quantities of the same units and determining the ratio tells us how much of one quantity is in the other.

i.e., it shows how many times a number contains another.

Total number of students = 150

ratio of boys to girls = 3 : 2

B:G = 3 : 2

now

3x + 2x = 150

5x = 150

x = 30

the number of boys = 3x = 3 X 30 = 90 boys.

the number of girls = 2x = 2 X 30 = 60 girls.

The number of  boys and girls in a class of 150 students is 90 and 60 respectively.

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The amount of honey that Bert’s new beehive hold would be; 200.

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

Given data that the Number of frame beehive = 6

The Pound of honey = 40

The Current Frame beehive = 30

First step is to formulate an equation and then use the formulated equation;

40 × 30 ÷ 6

Hence, 40 × 5

= 200 honey

Therefore, the number of honey would be; 200.

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This graph represents a continuous function. Also, the domain of this function is 0 ≤ x ≤ 6 and the range of this function is 20 ≤ y ≤ 200.

Mathematically, a range can be defined as the set of all real numbers that is associated with the elements of a domain. This ultimately implies that, a range simply refers to the set of all possible output numerical values which are shown on the y-coordinate (y-axis) of the graph of a function.

In Mathematics, a domain can be defined as the set of all real numbers for which a particular function is defined and it connects with the range.

This ultimately implies that, a domain is the set of all possible input numerical values to a function. Additionally, the domain of the graph of a function comprises all the input numerical values which are shown on the x-coordinate (x-axis).

From the information provided, the total weight of the barbell and plates in pounds is represented by this function:

f(x) = 30x + 20.

When x = 6, we have:

f(6) = 30(6) + 20.

f(6) = 180 + 20

f(6) = 200 lb.

Therefore, the domain is equal to 0 ≤ x ≤ 6 while the range of this function is 20 ≤ y ≤ 200.

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The factored form of x² + 2x - 15 is (x + 5)(x - 3).

Factorisation is a process of finding the factors of algebraic equations and representing them in simple form instead of expanded form.

Therefore, let's factor x² + 2x - 15

x² + 2x - 15

let's find two numbers we can add to get 2 and multiply to get - 15. The two numbers are -3 and 5.

Therefore,

x² - 3x + 5x - 15

x(x - 3) + 5(x - 3)

(x + 5)(x - 3)

Therefore,

x² + 2x - 15 = (x + 5)(x - 3)

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Answer:

150

Step-by-step explanation:

The sum of the interior angles, in degrees, of a regular polygon is given by the formula 180(n – 2), where n is the number of sides. The problem concerns a polygon with twelve sides, so we will let n = 12. The sum of the interior angles in this polygon would be 180(12 – 2) = 180(10) = 1800.

Answer:

Step-by-step explanation:

Ok:

1. Caculate all of the two triangles' angles

First triangle on the left!

50+90= 140+40= 180degrees

So: Angles for first one are 50,90,40

Second Triangle on right

51+90= 141+39= 180degrees

So: Angles for second one are 51,90, 39

2. Subtract the corners added together from 180 degrees

40+39= 79 degrees

180-79=101 degrees

3. Answer: Choice B or 101 degrees!

The jar of chemicals contains 176 grams of zinc.

Using ratio and proportion to calculate the amount of zinc. Let us assume the mass of zinc to be x. Equating the ratios.

4 : 11 = x : 484

Rewriting the equation in terms of x

x = (484 × 4) ÷ 11

Performing multiplication in numerator on Right Hand Side of the equation to find the value of x

x = 1936 ÷ 11

Performing division on Right Hand Side of the equation to find the value of x

x = 176

Thus, the mass of zinc is 176 grams.

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4, 7/4, -1/2, -11/4, is Arithmetic progression.

What is Arithmetic progression ?

An arithmetic progression or arithmetic sequence ( AP ) is a sequence of numbers such that the difference between the consecutive terms is constant.

Here the series is given

4, 7/4, -1/2, -11/4,.....

In series, take 1st and 2nd terms to know common difference.

the common difference is = 7/4 - 4

                                              = (7 - 16) / 4 = -9/4

Now, take 3rd and 2nd term

common difference = -1/2 - 7/4

                                 = (-2 - 7) / 4 = - 9/4

so, we get the common difference is -9/4.

By that we can clearly say that given sequence of series is a Arithmetic sequence.

Hence, 4, 7/4, -1/2, -11/4, is Arithmetic progression

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The rate of change of volume is 418.6  inch³/s .

Rate of increase of radius with time is ( dr/dt ) = 5

rate of decrease of height with time is (dh/dt ) = -3

volume of a cone is given by (V) =  [tex]\frac{1}{3} \pi r^{2}h[/tex]

Now the rate of change of volume  with respect to time is given by dV/dt

∴ dV/dt = d( [tex]\frac{1}{3} \pi r^{2}h[/tex]) / dt

dV/dt =  [tex]\frac{1}{3} \pi (2rh\frac{dr}{dt} + r^{2}\frac{dh}{dt} )[/tex]

value of radius and height when volume is changing are :

r = 20 inches

h = 40 inches

dV/dt = [tex]\frac{1}{3} \pi ([/tex] 2×20×40 ×5 - [tex]20^{2}[/tex]×3 )

dV/dt = [tex]\frac{1}{3} \pi[/tex](1600 - 1200)

dV/dt = (400/3) 3.14

dV/dt = 418.66 inch³/s

So the rate of change of the volume is 418.66 inch³/s.

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The Area of the circle is 149.6 when the radius is 6.9cm.

Given that,

The radius is 6.9cm when the pi value is 3.142

Find the circle's area is what we must do.

We know that,

Radius is 6.9cm

r= 6.9cm

The space a circle occupies in a two-dimensional plane is referred to as its area. As an alternative, the area of a circle is the area included within the circle's perimeter.

Area of the circle is πr²

Area of the circle= 3.142×6.9²

Area of the circle= 3.142×47.61

Area of the circle=149.6

Therefore, The Area of the circle is 149.6 when the radius is 6.9cm.

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False, the leftmost end point of a line segment cannot be specified as the start point of the line

A line segment in geometry has two different points on it that define its boundaries. A line segment is sometimes referred to as a section of a line that links two places. The difference between a line and a line segment is that a line has no endpoints and can go on forever in either direction. A line segment is either an edge (of that polygon or polyhedron) if its end points are adjacent vertices, or a diagonal more generally when both of its end points are vertices of a polygon or polyhedron. A line segment is referred to as a chord when both of its end points are located on a curve, like a circle.

Given,

False, the leftmost end point of a line segment cannot be specified as the start point of the line.

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[tex]~~~~~~~~~~~~\textit{distance between 2 points} \\\\ P(\stackrel{x_1}{8}~,~\stackrel{y_1}{2})\qquad Q(\stackrel{x_2}{3}~,~\stackrel{y_2}{8})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ PQ=\sqrt{(~~3 - 8~~)^2 + (~~8 - 2~~)^2} \implies PQ=\sqrt{( -5 )^2 + ( 6 )^2} \\\\\\ PQ=\sqrt{ 25 + 36 } \implies PQ=\sqrt{ 61 }\implies PQ\approx 7.8[/tex]

The equation of line t in slope intercept form is 5y - 3x = -1

The equation of line s is y=3/5x + 2/5

This is in the slope intercept form

y = mx + c

where m represents the slope of the line

The slope of the line  y=3/5x + 2/5 is 3/5

The slope of two parallel line is same

The slope of line t is 3/5, it passes through the points (2, 1)

The equation of the line is

y - y₁ = m(x - x₁)

y - 1 = 3/5 (x - 2)

5y - 5 = 3x - 6

5y - 3x = -6 + 5

5y = 3x  -1

y = 3/5 x - 1/5

Therefore, the equation of line t in slope intercept form is 5y - 3x = -1

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Answer:

5/9

Step-by-step explanation:

The result of a spin is either an odd number or an even number.  The two outcomes are complements.

If the probability of getting an odd number is 4/9, the probability of getting an even number is  1 - 4/9 = 5/9.

The perimeter of Ragans new mural is 530cm.

Rectangle:

A rectangle is a type of quadrilateral, whose opposite sides are equal and parallel. It is a four-sided polygon that has four angles, equal to 90 degrees. A rectangle is a two-dimensional shape.

Here it is given that the measure of the rectangle is 238 cm and 435cm.

The Raegan creates a mural that is 27cm.

The formula to calculate the perimeter of a rectangle:

Perimeter = 2(length + breadth)

Earlier the length is 238cm and the breadth is 435cm.

Now replace the breath 435cm to 27cm.

length = 238cm

breadth = 27cm

Therefore we get the perimeter of the rectangle:

Perimeter = 2( 238 + 27)

= 2( 265)

=530cm

Therefore the perimeter is 530cm.

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Answer:

1400

Step-by-step explanation:

The equation could be used to determine cc is 5.25x + 133 = 579.25 and cost of labor per hour is $85.

Given:

The technician at the store worked on the computer for 5.25 hours and charged her $133 for parts.

Total charged = 579.25

Let x be the charge per hour.

so the equation = 5.25x + 133 = 579.25.

Technician charge  = 579.25 - 133 = 446.25

5.25 hours = 446.25

divide by 5.25 on both sides

5.25 hours / 5.25 = 446.25/5.25

1 hour = $85

Therefore The equation could be used to determine cc is 5.25x + 133 = 579.25 and cost of labor per hour is $85.

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The number of large boxes of porridge that William bought, using a system of equations, was of:

8.

A system of equations is a set of equations involving multiple variables that are related, and then operations are made to solve these equations and identify the numeric value of each variable in the context of the problem.

For this problem, the variables are defined as follows:

William buys 5 small boxes of oat porridge, hence:

x = 5.

The total weight of his purchase is of 6825 grams, hence, considering the weight of each box, the following equation is built:

325x + 650y = 6825.

It is already stated on the problem that x = 5, hence the value of y can be obtained as follows:

325(5) + 650y = 6825.

y = (6825 - 325(5))/650

y = 8 large boxes.

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Based on the solution set S:{4}, the false equation is 3m + 7 = 14, because the solution of the equation is not 4

The first equation is

3t = 12

t = 12/3

t = 4

The solution is {4}

The second equation is

3m + 7 = 14

3m = 14 - 7

3m = 7

m = 7/3

The solution is not {4}

The third equation is

4(4c + 1) = 68

4c + 1 = 68/4

4c + 1 = 17

4c = 17-1

4c = 16

c = 16/4

c = 4

The solution is {4}

The fourth equation is

9 = 5p - 11

5p = 9 + 11

5p = 20

p = 20/5

p = 4

The solution is {4}

Hence, Based on the solution set S:{4}, the false equation is 3m + 7 = 14, because the solution of the equation is not 4

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The total cost of the shirts that have same cost when x=5 is,

c=70

A mathematical equation is a formula that joins two expressions and expresses their equivalence using the equals symbol (=). The definitions of the word equation and its cognates in different languages may differ slightly.

The entire cost is c

c = 40 + 6x

c = 20 + 10x

The quantity of shirts is x.

Via utilizing one of the equations to solve for one of the variables and then substituting that variable's value into the other equation, you can solve by substitution.

40+6x=20+10x

4x=20

x=5

You would solve for c in the first equation in this problem.

40+6x where x=5 then,

c=70

Since it has already been solved for c, all that is left to do is swap out c with its equivalent in the second equation.

20+10x where x=5 then,

c=70

Therefore, the total cost of the shirts that have same cost is c=70 when x=5.

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Step-by-step explanation:

6.

the factors need to be zero for the x-intercepts.

but (-3 - 3) = -6 and not 0.

the same for (-7 - 7) = -14 and not 0.

his mistake was the signs.

what do I need to add to -3 to get 0 ? 3. and 7 to -7.

so, the correct f(x) is

f(x) = (x + 3)(x + 7)

to get x-intercepts at -3 and -7.

7.

in the same way we get the factors here : for a given x the y value has to be 0.

how is y turning 0 for a polynomial in factor form ? well, at least one of the factors has to be 0.

therefore, for (-6, 0) the factor has to be

(x + 6) as -6 + 6 = 0

for (2, 0) the factor has to be

(x - 2) as 2 - 2 = 0

pick one of them as your answer. they are both correct factors for f(x).

Answer:

-4/5

Step-by-step explanation:

do -3/2to get your answer

Step-by-step explanation:

You find the image of triangle by translation