Hello I'm Chloe Can you Help Me, Thank you ;)
How many how many numbers are in pi?

Answer:

x = 12

Step-by-step explanation:

sqrt(x+4) - 3 = 1

First get the sqrt all by itself on one side of the equation. Add 3 to both sides of the equation.

sqrt(x+4) = 1 + 3

sqrt(x+4) = 4

To "fix" the sqrt, that is, "undo it" and get rid of it, you have to SQUARE both sides of the equation.

(sqrt(x+4))^2 = 4^2

x + 4 = 16

subtract 4 to finish up.

x = 12

Check:

sqrt(12 + 4) - 3 = 1

sqrt16 - 3 = 1

4 - 3 = 1

1 = 1 Check!

The best fitting line minimizes the sum of the squared errors when using least-square regression.

When trying to find the best fitting line to a set of data points, the goal is to minimize the differences between the observed data and the predicted values on the line.

The least-square regression method achieves this objective by minimizing the sum of the squared errors, which is the sum of the squared vertical distances between each data point and the corresponding point on the line.

By using the least-square regression approach, we can determine the line that provides the best overall fit to the data by minimizing the total squared differences. This method takes into account all the data points and calculates the line that best represents the relationship between the variables of interest.

The least-square regression line is often referred to as the "best fitting" line because it provides the most accurate prediction of the dependent variable based on the independent variable(s). It is widely used in various fields, including statistics, economics, and social sciences, to analyze and model relationships between variables.

Learn more about Least-square regression.

brainly.com/question/30782260

#SPJ11

The slope for plane A is 375, this means its rate of speed is 375 ml/h.

The slope for plane B is 445, this means the rate of speed for Plane B is 445 ml/h.

The slope of a linear equation = change in y / change in x.

A linear equation that is given as, y = mx + b or y = mx, has a slope that is represented as m.

Slope of Plane A:

Given the equation for Plane A as, y = 375x, the slope is, 375.

This means its rate of speed is: 375 ml/h.

Slope of Plane B:

Using two points, (1, 445) and (2, 890)

Slope for plane B = (890 - 445)/(2 - 1)

Slope for plane B = 445

This means the rate of speed for Plane B is: 445 ml/h.

Learn more about the slope on:

https://brainly.com/question/24907633

#SPJ1

Answer: a) i) The width of the floor can be expressed in terms of c as: w = c - 2 cm.

ii) The area of the floor can be expressed in terms of c as: A = c * (c - 2) cm^2.

b) If the area of the room is 15 cm^2, then we can write the equation as:

c * (c - 2) = 15.

c) Solving for c, we get:

c^2 - 2c - 15 = 0.

Using the quadratic formula, we find that:

c = 5 or c = -3.

Since the length of the room cannot be negative, we choose c = 5.

Therefore, the length of the room is 5 cm and the width of the room is 3 cm.

Step-by-step explanation:

Answer:

< ABE  = 109

Step-by-step explanation:

Angle Formed by Two Chords = 1/2(SUM of Intercepted Arcs)

< ABE = 1/2 ( 38+ 180)

< ABE = 1/2( 218)

< ABE  = 109

Answer:

3 up hope this help

-elsa

Step-by-step explanation:

Answer:

the first one is 189 the last one is 3

Step-by-step explanation:

I went on thing

If the parent graph is transformed to x^2 + 6, this shows that the parent function translated 6 units up the graph to create the graph x^2+6

These are graph with function of leading degree of 2. The parent function for a quadratic graph is x^2

f(x)= x^2

If the parent graph is transformed to x^2 + 6, this shows that the parent function translated 6 units up the graph to create the graph x^2+6

Learn more on translation here; https://brainly.com/question/12861087

#SPJ1

Answer:

Step-by-step explanation:

P(Walk or Bike)=\(\frac{72}{466} +\frac{90}{466}\)

                        =\(\frac{81}{233}\)  = 0.347

The estimated current total cost for the installed and insulated tank is $12,065.73.

The first step is to calculate the surface area of the tank. The surface area of a cylinder is calculated as follows:

surface_area = 2 * pi * r * h + 2 * pi * r^2

where:

r is the radius of the cylinder

h is the height of the cylinder

In this case, the radius of the cylinder is 1 meter (half of the diameter) and the height of the cylinder is 1 meter. So the surface area of the tank is:

surface_area = 2 * pi * 1 * 1 + 2 * pi * 1^2 = 6.283185307179586

The insulation will add a thickness of 0.05 meters to the surface area of the tank, so the total surface area of the insulated tank is:

surface_area = 6.283185307179586 + 2 * pi * 1 * 0.05 = 6.806032934459293

The cost of the insulation is $40 per square meter and the cost of labor is $95 per square meter, so the total cost of the insulation and labor is:

cost = 6.806032934459293 * (40 + 95) = $1,165.73

The original cost of the tank was $10,900, so the total cost of the insulated tank is:

cost = 10900 + 1165.73 = $12,065.73

Therefore, the estimated current total cost for the installed and insulated tank is $12,065.73.

Learn more about cylinder current total cost https://brainly.com/question/25109150

#SPJ11

Step-by-step explanation:

The distance from the radius to a point on the circle is equal to the radius. After using the distance formula, we get that the radius is 5.

Using the fact that the circle with center (h,k) and radius r is (x-h)^2 + (y-k)^2 = r^2, we get that the equation is:

(x+5)^2 + (y-6)^2 = 25

Answer:

k = -18

Step-by-step explanation:

When solving equations, the most important rule to keep in mind is that what you do to one side, you have to do to the other to keep the equation true.

We have: k/6 + 8 = 5

Our goal is to isolate the variable k.

This means we want to move all the numbers to one side, and leave k alone on the other side.

When solving this, you should look at the operation and do the inverse of that. (Subtract the value if its addition, add if its subtraction, multiply if its division, and divide if its multiplication)

k/6 + 8 = 5

We can start by subtracting 8 from both sides to cancel out the 8. (Reverse the addition)

k/6 + 8 - 8 = 5 - 8

k/6  = -3

Next, we can multiply both sides by 6 to isolate k. (Reverse the division)

k/6 * 6 = -3 * 6

k = -18

With that, we have our final answer.

Let me know if you have any questions!

Answer:

  (x, y) = (1.89, 0.59)

Step-by-step explanation:

Written in general form, the equations are ...

  4x +5y -10.51 = 0

  3x +8y -10.39 = 0

These can be solved using the cross-multiplication method to find ...

  ∆1 = (4)(8) -(3)(5) = 17

  ∆2 = (5)(-10.39) -(8)(-10.51) = 32.13

  ∆3 = (-10.51)(3) -(-10.39)(4) = 10.03

Then the values of the variables are ...

  x = ∆2/∆1 = 32.13/17 = 1.89

  y = ∆3/∆1 = 10.03/17 = 0.59

The solution is (x, y) = (1.89, 0.59).

To write Acos(?0t) + Bsin(?0t) in the form r*sin(?0t - ?), we can use the identities. The relationship among R, r, ? and ? is:
R^2 = r^2 (1 + (A/B)^2), tan? = r/R = B/A

r = sqrt(A^2 + B^2)
tan? = B/A

Therefore, r = sqrt(A^2 + B^2) and tan? = B/A.

To determine the relationship among R, r, ? and ?, we can use the identity:

R^2 = r^2 + (tan?)^2

Therefore, R = sqrt(r^2 + (tan?)^2) and tan? = r/R. Substituting the expression for tan? from earlier, we get:

tan? = B/A = r/R

Solving for R, we get:

R = r/tan? = r/(B/A) = rA/B

And substituting the expression for R in terms of r and tan?, we get:

R = sqrt(r^2 + (r/R)^2) * A/B

Simplifying this expression, we get:

R^2 = r^2 + (A/B)^2 * r^2

R^2 = r^2 (1 + (A/B)^2)

Therefore, the relationship among R, r, ? and ? is:

R^2 = r^2 (1 + (A/B)^2)
tan? = r/R = B/A

To show that Acos(ω₀t) + Bsin(ω₀t) can be written in the form r*sin(ω₀t - θ), we can use trigonometric identities. We know that:

sin(a - b) = sin(a)cos(b) - cos(a)sin(b)

Comparing this to the given expression, we have:

Acos(ω₀t) + Bsin(ω₀t) = r*sin(ω₀t - θ) = r[sin(ω₀t)cos(θ) - cos(ω₀t)sin(θ)]

Now, let's equate the coefficients of sin(ω₀t) and cos(ω₀t):

A = -r*sin(θ)
B = r*cos(θ)

To find r and θ in terms of A and B, we can use the Pythagorean identity:

A² + B² = (-r*sin(θ))² + (r*cos(θ))² = r²(sin²(θ) + cos²(θ)) = r²

Therefore, r = √(A² + B²).

Now, to find θ, we can use the tangent function:

tan(θ) = -A/B

Now, for the second part, if Rcos(ω₀t - θ) = r*sin(ω₀t - θ), we can use the sine-to-cosine transformation:

Rcos(ω₀t - θ) = Rsin(ω₀t - θ + π/2)

This implies that:

R = r
θ + π/2 = θ'

So, the relationship among R, r, θ, and θ' is:

R = r
θ' = θ + π/2

Learn more about sin at: brainly.com/question/19213118

#SPJ11

Answer: 5/8 of a teaspoon of salt

Step-by-step explanation:

half of 1 is 1/2 or 4/8

half of 1/4 is 1/8

4/8 + 1/8 = 5/8

To determine if the set of ordered pairs satisfies an exponential function, x -coordinates must have a constant increment.

We know that generally exponential function is written in the form function can be written in the form y = ab^x ,

where a and b are real numbers such that, a ≠ 0 , b > 0 , and b ≠ 1

a is called the initial value of function

and b is the constant ratio

We know that as x increases by a constant value, the value of y increases by a common ratio. This is characteristic of all exponential functions.

To determine whether the set of ordered pairs satisfies an exponential function, the condition that 'The x -coordinates must have a constant increment' must be satisfied.

Learn more about the exponential function here:

brainly.com/question/3127939

#SPJ4

Answer:

I believe the correct answer would be C.

Step-by-step explanation:

Have a great day! :)

(a) The volume V of the box as a function of x is V = 4x^3-60x^2+200x

(b) The domain of V in interval notation is 0<x<5,

(c) The length L , width W, and height H of the resulting box that maximizes the volume is H = 2.113, W = 5.773, L= 15.773

(d) The maximum volume of the box is 192.421 cm^2.

In the given question,

A box is to be made out of a 10 cm by 20 cm piece of cardboard. Squares of side length cm will be cut out of each corner, and then the ends and sides will be folded up to form a box with an open top.

(a) We have to express the volume V of the box as a function of x.

If we cut out the squares, we'll have a length and width of 10-2x, 20-2x respectively and height of x.

So V = x(10-2x) (20-2x)

V = x(10(20-2x)-2x(20-2x))

V = x(200-20x-40x+4x^2)

V = x ( 200 - 60 x + 4x^2)

V = 4x^3-60x^2+200x

(b) Now we have to give the domain of V in interval notation.

Since the lengths must all be positive,

10-2x > 0 ≥ x < 5 and x> 0

So 0 < x < 5

(c) Now we have to find the length L , width W, and height H of the resulting box that maximizes the volume.

We take the derivative of V:

V'(x) = 12x^2-120x+200

Taking V'(x)=0

0 = 4 (3x^2-30x+50)

3x^2-30x+50=0

Now using the quadratic formula:

x=\(\frac{-b\pm\sqrt{b^2-4ac}}{2a}\)

From the equationl a=3, b=-30, c=50

Putting the value

x=\(\frac{30\pm\sqrt{(-30)^2-4\times3\times50}}{2\times3}\)

x= \(\frac{30\pm\sqrt{900-600}}{6}\)

x= \(\frac{30\pm\sqrt{300}}{6}\)

x= \(\frac{30\pm17.321}{6}\)

Since x<5,

So x= \(\frac{30-17.321}{6}\)

x= 2.113

So H = 2.113, W = 5.773, L= 15.773.

d) Now we have to find the maximum volume of the box.

V = HWL

V= 2.113*5.773*15.773

V = 192.421 cm^3

To learn more about volume of rectangle link is here

brainly.com/question/13798973

#SPJ4

From the rigid transformation that takes ABC to EDF, the coinciding parts based on congruency; are matched below.

When we say two triangles are congruent to each other, it means that the corresponding sides and corresponding angles of both triangles are equal.

Thus, if triangle ABC is congruent to triangle EDF, then we can say that;

Angle A ≅ Angle E

Angle B ≅ Angle D

Angle C ≅ Angle F

Segment AB ≅ Segment ED

Segment AC ≅ Segment EF

Segment BC ≅ Segment DF

Read more about Congruent triangles at; https://brainly.com/question/7727792

Answer:

1. You can tell because every y value divided by its corresponding 3 value is 1/3, except 0 because 0 divided by 0 is 0.

2. Samuel is incorrect because when his sister's age is divided by his age, it differs every year.

(Example: 5/10 ≠ 10/15)

Given:

The sequence is:

-3, 5, -7, 9, -11,...

To find:

The correct statement about the given sequence.

Solution:

We have,

-3, 5, -7, 9, -11,...

Here, "..." means there are more terms in the sequence. So, the sequence has more than 5 terms and option A is incorrect.

From the given sequence it is clear that the 4th term is 9. So, option B is correct.

Clearly, 5th terms is -11. So, \(f(5)=-11\) and option C is incorrect.

The domain of a sequence is always the set of natural numbers. So, option D is correct.

In the given sequence the 4th term is 9. It means the point (4,9) lies on the graph of the sequence. So, option E is correct.

Therefore, the correct options are B, D, E.

Answer:

it would be C≈13.19cm

hope this helps :)

Sean's pumpkin was 3.45 times heavier than Kevin's pumpkin

To find out how many times heavier Sean's pumpkin was than Kevin's, we can divide the weight of Sean's pumpkin by the weight of Kevin's pumpkin:

33.12 pounds ÷ 9.6 pounds = 3.45

Therefore, Sean's pumpkin was 3.45 times heavier than Kevin's pumpkin.

To explain this result, we can say that if we were to put Kevin's pumpkin on one side of a balance scale and Sean's pumpkin on the other, Sean's pumpkin would weigh 3.45 times as much as Kevin's pumpkin. This can also be thought of as Sean's pumpkin being 245% heavier than Kevin's pumpkin (since 3.45 is 245% of 1).

It's worth noting that when comparing weights, it's important to use the same unit of measurement. In this case, both weights are already in pounds, so no conversion is necessary.

Learn more about this :

balance scale : brainly.com/question/29648746

#SPJ11

Answer:

The answer is Option C

Answer:

I think the answer would be C

Step-by-step explanation:

The dimensions of the scale model of your room would be 3/4 inch represents 1 foot. To determine the dimensions of the scale model, we need to apply the scale ratio of 3/4 inch represents 1 foot.

Let's assume the length and width of your actual room are L feet and W feet, respectively. To find the dimensions of the scale model, we can multiply the actual dimensions by the scale ratio.

The length of the scale model would be L * (3/4) inch, and the width would be W * (3/4) inch.

For example, if your actual room is 12 feet long and 10 feet wide, the dimensions of the scale model would be:

Length of the scale model = 12 feet * (3/4) inch = 9 inches

Width of the scale model = 10 feet * (3/4) inch = 7.5 inches

Therefore, the scale model would have a length of 9 inches and a width of 7.5 inches, based on the given scale ratio.

It's important to note that when creating a scale model, maintaining the proportionality between the actual dimensions and the model dimensions is crucial to accurately represent the physical space in a smaller scale.

To learn more about scale model, click here: brainly.com/question/16983689

#SPJ11

We draw a triangle QRS with vertices shown:

After dilation with a scale factor of r = 3/2, we multiply each coordinate by 3/2 and find the new coordinates Q', R', and S', respectively.

Shown below:

Drawing Q' R' S', we have the dilated triangle graph:

Barton should use a luggage scale to get the most accurate and appropriate measurement of his packed suitcase before he leaves to catch a flight. A luggage scale is a compact and portable device that is designed specifically to weigh luggage. Using a luggage scale is easy and convenient as it allows travelers to weigh their bags accurately, ensuring that they are within the airline's weight limit. To use a luggage scale, Barton should follow these simple steps:

Step 1: Attach the luggage strap Barton should attach the luggage strap to the handle of his suitcase.The strap should be attached in such a way that it can support the weight of the suitcase without slipping or coming off.

Step 2: Turn on the luggage scale Barton should turn on the luggage scale and wait for it to calibrate. This usually takes a few seconds. Once the scale is calibrated, it will display a zero reading.

Step 3: Lift the suitcase Barton should lift the suitcase by the luggage strap until it is off the ground. The luggage scale will display the weight of the suitcase on its digital display. This reading is the weight of the suitcase including all the contents inside.

Step 4: Check the weight If the weight of the suitcase is less than 50 pounds, Barton can go ahead and catch his flight without worrying about any extra charges. If the weight of the suitcase is more than 50 pounds, Barton will have to remove some items from the suitcase or pay the extra fee charged by the airline.

Therefore, using a luggage scale is the most accurate and appropriate method for travelers like Barton to measure their suitcase weight before boarding their flight.

For such more question on  suitcase

https://brainly.com/question/30668933

#SPJ8

Answer:

use a standard digital bathroom scale.

Step-by-step explanation:

The point D is located in quadrant iii. Here we have (-, -)

The total change in the consumed quantity of x₁ as per given price and income  is equal to 213.

x₁ = (21/7)P₁

x₂ = (51/7)P₂

P₁ = 10

P₂ = 5

P₁' = 81

To calculate the total change in the quantity consumed of x₁ when the price of P₁ changes from P₁ to P₁',

The difference between the quantities consumed at the original price and the new price.

Let's calculate the quantity consumed at the original price,

x₁ orig

= (21/7)P₁

= (21/7) × 10

= 30

x₂ orig

= (51/7)P₂

= (51/7) × 5

= 36.4286 (approximated to 4 decimal places)

Now, let's calculate the quantity consumed at the new price,

x₁ new

= (21/7)P1'

= (21/7) × 81

= 243

x₂ new

= (51/7)P2

= (51/7) × 5

= 36.4286

The total change in the quantity consumed of x₁ can be calculated as the difference between the new quantity and the original quantity,

Change in x₁

= x₁ new - x₁ original

= 243 - 30

= 213

Therefore, the total change in the quantity consumed of x₁ is 213.

learn more about change here

brainly.com/question/32782775

#SPJ4

The above question is incomplete, the complete question is:

The optimal amount of x1, x2, P1, P2 and income are given by the following:

x1= 21/ 7p1 x2= 51 / 7p2

The original prices are: P1=10 P2=5 The original income is: I =4189 The new price of P1 is the following: P1'=81 Assume that the price of x1 has changed from P1 to P1'. What is the total change in the quantity consumed of x1?

Please answer step by step

Answer:

840

Step-by-step explanation:

7000×2×6 ÷ 100. since it is 2%

= 840

20 degrees Celsius is equivalent to 68 degrees Fahrenheit

To convert 20 degrees Celsius to degrees Fahrenheit using the function f(c) = (9c/5) + 32, we can substitute the value of c = 20 into the function and calculate the result.

f(20) = (9(20)/5) + 32

      = (180/5) + 32

      = 36 + 32

      = 68

Therefore, 20 degrees Celsius is equivalent to 68 degrees Fahrenheit.

The complete question is: the function below allows you to convert degrees Celsius to degrees Fahrenheit. use this function to convert 20 degrees Celsius to degrees Fahrenheit. f(c) = (9c/5) + 32

Learn more about temperature conversion:

https://brainly.com/question/9820057

#SPJ11