**MARKING BRAINLIEST IF RIGHT AND IF YOU SHOW WORK**
3. Use the Fermi process to estimate the number of bricks needed to fill an empty bathtub. Show your work.

My teacher said you can use approximate dimensions of the bricks and bathtub. He said use the easiest ones so that it will be easy to solve.

Answers

Answer 1
bath tub: 60 x 30 x 18

brick: 8 x 4 x 2

fermi process:
(60 x 30 x 18) /  (8 x 4x 2)
             
 =  32,400 / 64

 = 506.25

 estimated as 500 bricks



Related Questions

20 points!
Looking at circle O, ∠BOC is a(n)
Please contact your teacher immediately if you do not see the image.

Question options:

minor angle


central angle


inscribed angle


major angle

Answers

Central angle. It is in the center
Short Answer B
A central angle is one that goes through the center of a circle. It's two ends are the endpoints of  the chord BC which you should draw on your sheet. 

If you do, we can talk about the other answers. 
An inscribed angle is one that has it's vertex on the circumference. <BAC is an example. A is the vertex. 

A major angle is the part above BC that goes around the circle such that the angle is larger than 180 degrees. It is described above by BAC going clockwise. It is associated with the arc of a circle.

A minor angle is the angle not included in the major angle. In this case it is the angle formed by sweeping around from B to C underneath the chord BC


What is the equation of the line that passes through the points (0, -4) and (2, 8)?

A. y = 6x - 4
B. y = 6x + 4
C. y = 4x + 6
D. y = -4x + 6

Answers

Option A is your answer, y = 6x - 4.

m = Y₂ - Y₁ / X₂ - X₁

m = 8 -  (- 4) / 2 - 0
m = 12 / 2
m = 6

So now your equation is y = 6x + b. This eliminates options C and D. Plug in any of your ordered pairs to find b. I picked the first one. 

- 4 = 6(0) + b
- 4 = 0 + b
- 4 = b

Your equation is y = 6x - 4. 

What is the trigonometric ratio for sin C?

Answers

The simplified fraction for sinC will be 9/41

What is the radius of convergence of the maclaurin series (2x)/(1+x^2)?

Answers

To solve this problem you must apply the proccedure shown below:
 1. You have to find the radius of convergence of the following Maclaurin series:
 [tex](2x)/(1+ x^{2} ) [/tex]
 2. Let's take the denominator and find the roots:
 [tex]1+ x^{2} =0[/tex]
 [tex] x^{2} =-1 \\ x= \sqrt{-1} \\ x1=i \\ x2=-i[/tex]
 3. The roots are [tex]x1=i \\ x2=-i[/tex] and the distance from the origin is [tex]1[/tex].
 Therefore, the answer is: [tex]1[/tex]

The radius of convergence of the maclaurin series is 1 unit.

It is given that maclaurin series  [tex]\rm \frac{2x}{(1+x^2)}[/tex]

It is required to find the radius of the convergence of the maclaurin series.

What is maclaurin series?

It is defined as the expansion of a function that provide the approximation of the given function at any point of function.

We have:

[tex]\rm \frac{2x}{(1+x^2)}[/tex]

To find the radius of convergence of the maclaurin series, we must find the roots of denominator hence:

[tex]\rm 1+x^2= 0\\\\\rm x^2 = -1\\\\[/tex]

From the complex number: the roots are imaginary:

[tex]\rm x_1 = i\\x_2 = -i[/tex]

i is the iota

and the distance from the origin (0,0) is 1.

Thus, the radius of convergence of the maclaurin series is 1 unit.

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A rectangular plot of land that contains 1500 square meters will be fenced and divided into two equal portions by an additional fence parallel to two sides. find the dimensions of the land that require the least amount of fencing.

Answers

Let x = the length of the rectangle
Let w= the width

Two sections are required, hence 2w of fence required
2x+3w=500

this can be written as:
3w=1500-2x
w=(1500-2x)/3

Area=x*w
replacing w with our expression:
A=x(1500-2x)/3
A=(500x-2x^2)/3

This is a quadratic equation, if we find the axis of symmetry we will know what value of x gives maximum area:
Axis of symmetry: x=-b/2a
From our equation we get:
a=-2/3; b=1500/3
thus
x=(1500/3)/(-(-2/3))
x=750
thus the maximum area will be given by length of 750

The square root of 53 lies between which two numbers?

Answers

The square root of 53 lies between 7 and 8.

There are a couple ways to find this. You could...
A. Use a calculator and simply find the square root of 53 (7.280...) OR
B. You could square each number (1^2, 2^2, 3^2...) until you get the closest 2 numbers (one less than and one greater than) to 53 (7^2 = 49) and (8^2 = 64).

I hope this helps!

how do you convert cos(x) into sin(x) and tan(x) ?

Answers

since tan x = sin x    /    cos x, we could write:

              tan x
cos x = ----------    In other words, rewrite "cos x" in an expression as

  tan x 
-----------
  sin x

PLEASE ANSWER + BRAINLIEST!!!

What is the value of 3x^2 - 5xy + 5y^2 for x = -6 and y = 2?

A. -68

B. -4

C. 188

D. 208

Answers

If you put in x for -6 and y for 2, you get 3(-6)^2 - 5(-6)(2) + 5(2)^2. 

Simplifying all the numbers, it's 3(36) + 30(2) + 5(4), and then 108+60+20. Going along, you get 188

After a 40% discount an item costs $360. what is the original cost

Answers

Original Price = Final Price / (100 - Discount)

So...

OP = 360 / 100 - 0.40
OP = 360 / 0.60
OP = 600

The original price is $600. 

To check, do 600 - (600 * 0.40) in a calculator. You get 600 - 240 = 360, the discounted cost. 

Answer:

It is $600

Step-by-step explanation:

hope it helps, murdle

If and represent rational expressions and b0 and y0, what is true of their product? Check all that apply.

Answers

Their product will be rational. Can I see the answer options?

Correct options are Options B, D, E. The product of two rational expressions (a/b) and (x/y) is a rational expression, specifically the ratio of ax and by, or equivalently ax/by. Incorrect options include ay/bx and a/y(x/b).

To determine the product of two rational expressions (a/b) and (x/y), where b ≠ 0 and y ≠ 0, let's explore the given options. Here are the truths about the product:

The product is a rational expression: When you multiply two rational expressions, the result is also a rational expression. This follows from the definition of rational expressions, which are ratios of polynomials.

The product is the ratio of ax and by: Mathematically, multiplying the numerators and denominators of the two rational expressions gives us (ax)/(by).

The product is equivalent to ax/by: This restates the above ratio in a simplified expression form, confirming that the multiplication results in (ax)/(by).

As we can see, the other expressions mentioned (ay/bx, a/y(x/b), a/(y(x/b))) are not correct representations of the product. Correct options are Options B, D, E.

Complete question:

If a/b and x/y represent rational expressions and b0 and y0, what is true of their product? Select three options.

A. The product is equivalent to ay/bx

B. The product is a rational expression.

C. The product is equivalent to a/y(x/b)

D. The product is the ratio of ax and by.

E. The product is equivalent to ax/b(y)

22 POINTS, NEED URGENT HELP

Write the equation of each circle:

1. R with center R(-1, 8) and radius 5

2. K with center K(4,0) and that passes through (2,0)

Answers

1) start with (x-h)^2 + (y-k)^2 = r^2.  Insert the given info:  center at (-1,8) and radius 5:

              (x+1)^2 + (y-8)^2 = 5^2     (answer)

A quilt is in the shape of a regular pentagon. It is made from 5 pieces of fabric that are congruent triangles. Each triangle has an area of 16 inches.What is the area of the quilt?

Answers

Multiply 16 × 5 because each triangle is 16 inches and you have 5 triangles.

16 × 5 = 80

The area of the quilt is 80 inches².

Final answer:

The area of the quilt, which is a regular pentagon made from five congruent triangles, is 80 square inches, determined by multiplying the area of one triangle (16 inches) by five.

Explanation:

The area of the quilt which is in the shape of a regular pentagon can be determined by calculating the area of the five congruent triangles that make up the pentagon. Since each triangle has an area of 16 inches, we can find the total area by simply multiplying the area of one triangle by the number of triangles.

To calculate the total area of the quilt:

First, determine the area of one triangle, which is given as 16 inches.Next, since there are five congruent triangles in the pentagon, multiply the area of one triangle by 5.The total area of the quilt would be 16 inches (per triangle) × 5 triangles = 80 inches.

Therefore, the total area of the quilt is 80 square inches.

A typist charges $0.90 a page and averages 45 pages per work day. If she works 3 days a week, how much does she earn in a week?

Answers

the answer to this problem is 121.5

Final answer:

The typist earns $121.50 per week by multiplying the charge per page ($0.90) with the daily page average (45 pages) and the number of days worked per week (3 days).

Explanation:

The question asks us to calculate the weekly earnings of a typist who charges $0.90 per page and averages 45 pages per day, working 3 days a week. To find the total weekly earnings, we can multiply the number of pages typed per day by the charge per page, and then multiply that result by the number of days worked in a week.

Multiply the number of pages (45) by the charge per page ($0.90): 45 pages × $0.90 = $40.50 per day.

Multiply the daily earnings by the number of days worked in a week (3): $40.50 × 3 days = $121.50 per week.

Therefore, the typist earns $121.50 per week.

A. (-3,-5)
B.( -2,-2)
C. (4,9)
D.(13,5)

Answers

12. The inverse relation has the x- and y-values swapped.

The appropriate choice is ...
  D. (13, 5)

Express answer in exact form.

Find the area of one segment formed by a square with sides of 6" inscribed in a circle.

(Hint: use the ratio of 1:1:√2 to find the radius of the circle.)


Answers

Answer:

A = { 9/2 π - 9 } in^2

Step-by-step explanation:

I just did this

Hope this helps !

Final answer:

To find the area of the segment, subtract the area of the triangle from the area of the sector.

Explanation:

To find the area of one segment formed by a square with sides of 6 inches inscribed in a circle, we need to find the area of the sector formed by the circle and subtract the area of the triangle formed by the diagonal of the square.



First, find the radius of the circle using the given square. The diagonal of the square is equal to the diameter of the circle. Using the Pythagorean theorem, we have: r = s×√2/2 = 6×√2/2 = 3√2 inches.Next, find the area of the sector. The formula for the area of a sector is: A = (θ/360) × π r2. Since the square is inscribed in the circle, the angle θ is 90 degrees. Plugging in the values, we have: A = (90/360) × π (3√2)2 = π (9/2) square inches.Finally, find the area of the triangle. The diagonal of the square divides it into two congruent right triangles. The area of one of the triangles is: A = (1/2) b h = (1/2) × 6 × 6 = 18 square inches. Since there are two triangles, the total area of the two triangles is 36 square inches.To find the area of the segment, subtract the area of the triangle from the area of the sector. The area of the segment is: A = π (9/2) - 36 = (9π/2) - 36 square inches. This is the exact form of the area of one segment formed by the square inscribed in the circle.

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Write the equation of a horizontal line that passes through the point (3, -3).

Answers

check the picture below.

Help Please
A survey was taken of 36 people to see if they owned a car and/or a truck. The results are shown in the Venn diagram.



Enter your answers in the boxes to complete the two-way table based on the given data.
First picture is how they want you to put the answers in & the second one is the grid with the numbers

Answers

The two way table is attached.

According to the Venn diagram, 4 people own a car and a truck.  15+4=19 people own a car, and 4+9=13 people own a truck.  This leaves us 36-(15+4+9)=36-28=8 people that do not own a car or a truck.

We put 8 in the Don't Own a Truck row under the Don't Own a Car column.
We put 4 in the Own a Truck row under the Own a Car column.
We put 19 in the Total row under the Own a Car column.
We put 15 in the Don't Own a Truck row under the Own a Car column.

We put 13 in the Own a Truck row under the Total column.
We put 9 in the Own a Truck row under the Don't Own a Car column.
We put 23 in the Don't Own a Truck row under the Total column.
We put 8 in the Down Own a Truck row under the Don't Own a Car column.

We put 36 in the Total row under the Total column.
We put 17 in the Total row under the Don't Own a Car column.

The resonance frequency f in an electronic circuit containing inductance L and capacitance C in series is given by f=1/2π√LC. Determine the inductance L in an electric circuit if the resonance frequency is 6.2 and the capacitance is 0.0001. Round your answer to the nearest tenth.

10270.1
6.6
256.8
0

Answers

For this case we have the following function:
 f = 1 / (2π√LC)
 Clearing L we have:
 √LC = 1 / (2πf)
 LC = (1 / (2πf)) ^ 2
 L = (1 / C) * (1 / (2πf)) ^ 2
 Substituting values:
 L = (1 / 0.0001) * (1 / (2 * 3.14 * 6.2)) ^ 2
 L = 6.596253438
 Round to the nearest tenth:
 L = 6.6
 Answer:
 
L = 6.6
In this situation, you have to use the equation
 f = 1 / (2π√LC)
 

To find L
 √LC = 1 / (2πf)
 LC = (1 / (2πf)) ^ 2
 L = (1 / C) * (1 / (2πf)) ^ 2

 Substitute the values:
 L = (1 / 0.0001) * (1 / (2 * 3.14 * 6.2)) ^ 2
 L = 6.596253438
 L = 6.6
So the  Answer is this:
 L = 6.6

Daniela is a stain glass artist; she created the window below for her living room. What is
the area of the window she created?

Answers

The window has a shape of a semi-circle (half of a circle).

We know the diameter d = 12 ft.

The area of a (complete) circle is given by the formula:
A = π × r²

The radius can be found by halving the diameter:
r = d ÷ 2
  = 12 ÷ 2
  = 6 ft

Therefore the area of the circle will be:
A = π × r²
    = 3.14 × 6²
    = 3.14 × 36
    = 113.04 ft²

And the area of the semi-circle:
A = 113.04 ÷ 2
   = 56.52 ft²

Hence, the area of the window will be 56.52 ft².

Which of the following gives all of the coefficients of the algebraic expression -2x^2 +17-15x+7xy

Answers

The coefficients of the algebraic expression -2x² + 17 -15x + 7xy are -2, 17, -15 and 7

How to determine the coefficient of the expression

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

-2x² + 17 -15x + 7xy

Consider an expression represented as

Ax

Where A is a constant and x is the variable

The coefficient of the expression is A

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

The coefficients of the algebraic expression are -2, 17, -15 and 7

Question

Which of the following gives all of the coefficients of the algebraic expression -2x^2 +17-15x+7xy

a. 2,  17, 15 and 7

b. -2, 17, -15 and 7

c. -2, -17, -15 and 7

d. -2, -17, 15 and 7

Complete the equation of the line through (-8,8) and (1,-10). Use exact numbers.

Answers

Since you know the x and y values, you just have to plug these into the linear slope-intercept equation:

y = mx + b
-10 = m(1) + b
m + b = -10
b = -10 - m

Now that we have a value for b, we can plug this into the other equation:

8 = m(-8) + b
8 = -8m + (-10 - m)
8 = -9m -10
18 = -9m
m = -2

Now that we know what m is equal to, we can plug this into our first equation to get an answer for b:

b = -10 - m
b = -10 -(-2)
b = -10 + 2
b = -8

Our final equation is y = -2x - 8

The equation of the line through (-8,8) and (1,-10) is y = -2x - 8

Using the slope intercept form equation.

y = mx + b

where

m = slope

b = y-intercept

Therefore,

(-8,8) (1,-10)

m = -10  - 8 / 1 + 8 =  - 18  / 9 = -2

Therefore,

let's find b as follows:

(1, -10)

y = -2x + b

-10 = -2(1) + b

b = -10 + 2

b= -8

Therefore,

y = -2x - 8

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If you add the lengths of the focal radii of an ellipse, what other value will you produce?



2a



2b



2c



The eccentricity

Answers

The figure below shows the representation of this problem. We know from mathematics that an ellipse is a curve in a plane surrounding two focal points called F1 and F2, such that the sum of the distances to the two focal points is constant for every point on the curve. So, for the figure If you add the lengths of the focal radii of an ellipse will produce a constant value equal to 2a that is the line in red.

Equation of an ellipse

→having center (0,0) , vertex ([tex](\pm a ,0)[/tex] and covertex [tex](\pm b ,0)[/tex] and focus [tex](\pm c ,0)[/tex] is given by:

[tex]\frac{x^2}{a^2} + \frac{y^2}{b^2}=1[/tex]

As definition of an ellipse is that locus of all the points in a plane such that it's  distance from two fixed points called focii  remains constant.

Consider two points (a,0) and (-a,0) on Horizontal axis of an ellipse:

Distance from (a,0) to (c,0) is = a-c = [tex]F_{1}[/tex]

Distance from (-a,0) to (c,0) is = a + c = [tex]F_{2}[/tex]

[tex]F_{1} + F_{2} =[/tex] a -c + a +c

          = a + a

        = 2  a  →(Option A )


Park rangers notice a negative correlation between the number of available campsites in a park and the amount of litter on the park's trails. Which variable is most likely the lurking variable that explains the correlation? Question 3 options: age of trees in the park number of eagles spotted in the park number of visitors to the park density of trees in the park

Answers

The answer is The number of visitors to the park.

We have been given that a park rangers notice a negative correlation between the number of available campsites in a park and the amount of litter on the park's trails.

We need to figure out the lurking variable that describes the given correlation.

Out of the given options, the most appropriate variable that describes that negative correlation between number of available campsites in the part and the amount of litter on the park's trails is number of visitors to the park.

The reason, why number of visitors to the park is the lurking variable for the given negative correlation, is that more the number of visitors, more the litter they produce and consequently, lesser the number of available campsites.

What is the surface area of a conical grain storage tank that has a height of 43 meters and a diameter of 14 meters? Round the answer to the nearest square meter.
A. 1,100 square meters
B. 1,112 square meters
C. 2,507 square meters
D. 2,605 square meters

Answers

we know that
[surface area of the cone]=pi*r²+pi*r*l
where 
r is the radius
l is the slant height
l²=h²+r²
h=43 m
r=14/2---> 7 m
l²=43²+7²----> l²=1898--------> l=43.57 m
[surface area of the cone]=pi*7²+pi*7*43.57----> 1111.53 m²----> 1112 m²

the answer is the option 
 B. 1,112 square meters

The solution to 15 a2 − 1 = 5 2a − 2 is a = . The extraneous solution is a = .

Answers

For this case the correct expression is:
 15 / (a ^ 2 - 1) = 5 / (2a - 2)
 Rewriting we have:
 3 / (a ^ 2 - 1) = 1/2 (a - 1)
 6 / (a ^ 2 - 1) = 1 / (a - 1)
 6 (a - 1) = (a ^ 2 - 1)
 6 (a - 1) = (a-1) (a + 1)
 (a + 1) = 6
 a = 6-1
 a = 5
 Answer:
 
The solution is:
 
a = 5

Answer:

5 and 1

1 is extraneous

Step-by-step explanation:

For the function f(x) = x2, what effect will multiplying f(x) by 1/2 have on the graph?

Answers

For this case we have the following function:
 f (x) = x2
 We apply the following transformation:
 Vertical expansions and compressions:
 To graph y = a * f (x)
 If 0 <a <1, the graph of y = f (x) is compressed vertically by a factor a. (Shrinks)
 We have then:
 f (x) = (1/2) * x2
 Answer:
 
is compressed vertically by a factor 1/2

Anyone know this geometry question? Will give brainiest

Answers

If AC must be parallel with BD and m∠6 is doubled, m∠3 must be doubled too. 

This is because of the following rule:
When two lines are parallel, which is the occasion with AB and CD, then the corners in which the intecepting parallel lines (AC and BD) stand must be the same. So corner 6 is equivalent to corner 3, corner 1 and corner 5. Corner 2 and corner 4 are equivalent too.

solve for z (attachment)

Answers

By similar triangles
                      z / 4 = (16 + 4)/z
                      z^2 / 4 = 20
                           z^2 = 80
                               z = 4√5
Therefore the answer to this question is z = 4√5.
Look at the picture.
[tex]\Delta ABD\ and\ \Delta BCD\ are\ similar,\ therefore:\\\\\dfrac{y}{4}=\dfrac{16}{y}\ \ \ \ |cross\ multiply\\\\y\cdot y=4\cdot16\\\\y^2=64\to y=\sqrt{64}\to y=8[/tex]
Use Pythagorean theory:
[tex]z^2=4^2+8^2\\\\z^2=16+64\\\\z^2=80\to z=\sqrt{80}\\\\z=\sqrt{16\cdot5}\\\\z=\sqrt{16}\cdot\sqrt5\\\\\boxed{z=4\sqrt5}[/tex]

Write the function associated with the graph below

Answers

That's a positive slope... I don't know if that's the kind of answer you're looking for, but it's a start I guess.

Since the value of the function is decreasing exponentially as x decreases ,

The function is of the form [tex] y=ae^{bx}+c,b>0 [/tex].

Since the curve passes through (0,6),

[tex] 6=ae^{0}+c,6=a+c [/tex],

Since the curve passes through (-1,0),

[tex] 0=ae^{-b}+c [/tex].

Since [tex] y=-3 [/tex] is a horizontal asymptote,

[tex] -3=ae^{-\infty}+c,c=-3 [/tex]

From the above 3 equations,

[tex] c=-3,a=9,9e^{-b}=3,e^b=3,b=\ln 3 [/tex].

Therefore, the required function is

[tex] y=9e^{\ln 3 x}-3\\
y=9*3^{ x}-3 [/tex].

It can be verified that the curve [tex] y=9*3^{ x}-3 [/tex] passes through [tex] (-2,-2) [/tex].

Use the grouping method to factor the polynomial below completely.

x3 – 4x2 + 3x – 12

A. (x2 + 4)(x – 3)
B. (x2 – 4)(x + 3)
C. (x2 – 3)(x + 4)
D. (x2 + 3)(x – 4)

Answers

After factor simplification of the polynomial, The answer is D
The answer is d
Hope that helped!!!!!!
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