what type of correlation relationship is "the number of fire stations in a city is positively correlated with the number of parks"

Answers

Answer 1

The type of correlation relationship that exists between the number of fire stations in a city and the number of parks is: accidental correlation relationship.

What is Accidental Correlation Relationship?

Accidental relationship is a type of correlation relationship whereby there is a strong correlation between two variables without a logical explanation for such relationship. It is often regarded as coincidental.

Therefore, the type of correlation relationship that exists between the number of fire stations in a city and the number of parks is: accidental correlation relationship.

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Related Questions

HELP HELP HELP HELP
HELP HELP HELP

Answers

a) 3x (you substitute the g equation into the f one by putting it in the x value for f)

b) x (do the same thing, but switch the letters)

Mrs. fresneda sells homemade soap at the farmers' market for $4.00 per bar. write an expression for how much mrs. fresneda earns selling bars of soap. then, evaluate the expression to determine how much money she will earn if she sells 26 bars of soap.

Answers

The expression which shows the earning of Mrs. Fresneda is 4x and the money that she will earn by selling 26 bars of soap is $144.

Given that price of soap is $4.00 per bar.

We have to find the expression which shows the earning of Mrs. Fresneda after selling soap bars and the money that she will earn by selling 26 bars of soap.

let the number of soap bars be x.

We know that the revenue is the product of price and quantity.

Money that Mrs.Fresneda earns is 4*x

=4x

Expression is 4x which shows that money that Mrs. Freneda will earn by selling soap bars.

We have to just put x=26 in the expression to calculate the money after selling 26 bars of soap.

Money=4*26

=$144

Hence the expression is 4x and the money that Mrs.Freneda will earnby selling 26 bars of soap is $144.

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A freezer is shaped like a rectangular prism. It has a length of 8 feet and a height of 3 feet. The volume is 54 cubic feet. Find the width of the freezer.

Answers

Step-by-step explanation:

volume = length • width • height

by making width subject

V=LWH

W=V/LH

W= 54/8×3

W=54/24

W=9/4

W=2.25

A printing company charges a fixed rate to set up the printing press, plus a cost of $3.50 for every 100 copies. If 800 copies cost $64.00, how much will it cost to print 1500 copies?

Answers

Answer:

88.5

Step-by-step explanation:

3.5 * 8 = 28, this is how much was spent on copies printed. If 800 copies cost $64 and 28 of that was on the 3.5 fee per 100, then the flat rate must be:

64-28 = 36.

Now, let's do 1500. For 1500 copies, you will get charged $3.5 15 times. This amounts to 52.5, then adding the fixed fee of 36 dollars, you get

88.5

What is the solution to this system of linear equations?

x − 3y = −2

x + 3y = 16

(7, 3)
(3, 7)
(−2, −3)
(−3, −2)

Answers

Answer:

(7,3)

Step-by-step explanation:

you can add the equations together to eliminate y and first solve for x

(x-3y = -2) + (x+3y=16) = (2x = 14)

x = 7

then plug x into one of the equations to solve for y

(7) - 3y = -2

9 = 3y

y = 3

the solution is (7,3)

Answer: (7, 3)

Step-by-step explanation:

x - 3y = -2

x + 3y = 16

Here we can add the two equations together to cancel out the y

2x = 14

divide by 2 on both sides to get

x = 7

Now that we have the X value, plug in x value into an equation to get the Y

x - 3y = -2

7 - 3y = -2

-3y = -9

y = 3

So the solution is (7, 3)

OA=
What Is OA=
Help me please!!! Thanksss

Answers

The length of side OA in the given rhombus is: 5 units.

What is a Rhombus?

A rhombus is a quadrilateral that has four sides that are all of the same length. Therefore, in the image given, the length of AB equals the length of OA.

Given the following:

A(3, 4)B(8, 4)

Length of AB = |8 - 3}

Length of AB = 5 units.

AB = OA = 5 units.

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Can someone help me please

Answers

10 plus 4 equal 14 so you have to get the same sum for he other line since they are equal distances. 14 minus 5 is 9, so therefore x is equal to 9.

9. The half-life of aspirin in your bloodstream is 12 hours. Use exponential model to
estimate how long for the 500 mg dosage to decay to 70% in your bloodstream.

Answers

after 6.2 hours the dose will decay to 70% in your bloodstream.

How long you must wait for the dosage to decay to 70% in your bloodstream?

We know that the half-life is 12 hours. Then the exponential relation for an initial dosage of A is:

[tex]D(t) = A*e^{-t*ln(2)/12h}[/tex]

If the dosage needs to decay to a 70% of the initial dosage, then we must have:

[tex]e^{-t*ln(2)/12h} = 0.7[/tex]

Now we need to solve that for t:

If we apply the natural logarithm in both sides, we get:

[tex]ln(e^{-t*ln(2)/12h}) = ln(0.7)\\\\-t*ln(2)/12h = ln(0.7)\\\\t = -ln(0.7)*12h/ln(2) = 6.2h[/tex]

So after 6.2 hours the dose will decay to 70% in your bloodstream.

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show the height of the pyramid is 9 cm

Answers

The height of a pyramid with volume of 75 cm³ and square base area of 25 cm², is 9 cm

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

Let us assume that the pyramid has a volume of 75 cm³ and square base area of 25 cm², hence:

Volume = (1/3) * area of base * height

75 = (1/3) * 25 * height

height = 9cm

The height of a pyramid with volume of 75 cm³ and square base area of 25 cm², is 9 cm

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PLS HELP IN SUPER STUCK PLEASE HELP

Answers

The equation of the parallel line is
y = -3x + 15

y = -3x + 2 is the equation of the original line. Because the lines are parallel the gradient will be the same so we just sub in the give coordinate (4,3) into y = -3x + b

3 = -3 x 4 + b

Then solve for b to get b = 15 and sub that into the equation of the parallel line to get

y = -3x + 15

PLEASE HELP ASAP

Determine the number of terms in the sequence. Your work must be shown with fractions not decimals.

2/81, 4/27, 8/9,…,6912

Answers

we conclude that the sequence has 8 terms.

How to get the number of terms in the sequence?

Here we have the geometric sequence:

2/81, 4/27, 8/9, ..., 6912

Notice that each term is equal to 6 times the previous term, such that:

2/81*6 = 4/27

4/27*6 = 8/9

Then the n-th term is equal to:

[tex]a_n = a_1*r^{n-1}[/tex]

Where in this case:

[tex]a_1 = 2/81\\\\r = 6[/tex]

Now we need to find the value of n such that:

[tex](2/81)*6^{n-1} = 6912\\\\6^n = 6*6812*(81/2) = 1,679,616[/tex]

If we apply the natural logarithm to both sides, then:

[tex]n*ln(6) = ln(1,679,616)\\n = ln(1,679,616)/ln(6) = 8[/tex]

Then we conclude that the sequence has 8 terms.

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Use the distributive property to write an
addition sentence equivalent to:
8(5+2)

Answers

Answer:

8(5) + 8(2)

Step-by-step explanation:

8 (5 + 2) is 8 (7) or 56

If I distribute the 8 through the problem, I will get the same answer

8(5) + 8(2)

40 + 16

56

Which x value makes this equation true? Explain how you can tell
2x^2 - x + 10 = 38
a) x=2
b) x=4
c) x=-4
d) x=6

Answers

Answer:

b) x = 4

Explanation:

[tex]2x^2 - x + 10 = 38[/tex]

collect variables

[tex]2x^2 - x + 10 - 38 = 0[/tex]

simplify

[tex]2x^2 - x - 28 = 0[/tex]

breakdown

[tex]2x^2 -8x + 7x - 28 = 0[/tex]

factor out

[tex]2x(x - 4) + 7(x - 4) = 0[/tex]

collect into groups

[tex](2x + 7)(x - 4) = 0[/tex]

set to zero

[tex]2x + 7 = 0, x - 4 = 0[/tex]

relocate variable

[tex]2x = -7, x = 4[/tex]

final solutions

[tex]x = -3.5, x = 4[/tex]

The answer is b.

To find the value of x, we need to convert this into the form of a quadratic equation.

Subtract 38 from each side.

2x² - x + 10 - 38 = 38 - 382x² - x - 28 = 0

Solve by splitting the middle term.

2x² + 7x - 8x - 28 = 0x (2x + 7) - 4 (2x + 7) = 0x = 4, x = -7/2

The angle represents the phase shift, determined by the initial conditions of the experiment or the position of the weight at t

Answers

At the initial condition, this weight approached the equilibrium position from a positive direction of 5 units. Also, the weight was descending (down) to the ground, with the spring stretching.

How to describe the initial condition of this experiment?

First of all, we would derive an expression for the position with respect to the angle (phase shift) under the appropriate conditions:

Asin(ωt + ø) = c₂sinωt + c₁cosωt.

At t = 0, we have:

y = c₂sin(0) + c₁cos(0).

y = 0 + c₁

y = 0 + 5

y = 5 units.

Therefore, we can logically deduce that at the initial condition, this weight approached the equilibrium position from a positive direction of 5 units. Also, the weight was descending (down) to the ground, with the spring stretching.

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Complete Question:

The angle Φ represents the phase shift, determined by the initial conditions of the experiment or the position of the weight at t = 0. If the weight is at its maximum positive position (weight is above equilibrium) at t = 0, then Φ = 0. If the weight is at its maximum negative position (spring is stretched and weight is below equilibrium) at t = 0, then Φ = π. If the weight is traveling in the negative direction and passing through equilibrium at t = 0, then Φ = π/2. In the response box, describe the initial condition of our experiment; specifically, describe the position of the weight and the direction in which it was traveling.

The inequality |2x - 5 > 8 can be written as which two inequalities?

Answers

Answer:

2x - 5 < -8 or 2x - 5 > 8

Step-by-step explanation:

|2x - 5| > 8

2x - 5 < -8 or 2x - 5 > 8

The two inequalities that can be written from the |2x - 5| > 8 are:

2x - 5 > 8

-2x + 5 > 8

We have,

To split the inequality |2x - 5| > 8 into two separate inequalities, we consider both the positive and negative cases for the absolute value expression.

Positive case:

When 2x - 5 is positive, we have:

2x - 5 > 8 _____(1)

Negative case:

When 2x - 5 is negative, we have:

-(2x - 5) > 8

Simplifying the negative case:

-2x + 5 > 8 ______(2)

Now, we have two inequalities:

2x - 5 > 8

-2x + 5 > 8

These are the two inequalities resulting from the given inequality

|2x - 5| > 8.

Thus,

The two inequalities that can be written from the |2x - 5| > 8 are:

2x - 5 > 8

-2x + 5 > 8

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Write down the mathematical name of the shape made by each net.
a)
b)
How do I do the picture

Answers

Answer:

1. Cube

2. Square-based pyramid

Step-by-step explanation:

Answer:

Below.

Step-by-step explanation:

a) Cube

b Pyramid

Please help me with this polynomial based questions​

Answers

Answer:

Hello,

Step-by-step explanation:

All is in the following picture:

pls help solve this……

Answers

The first one is the right option have a good day :)

Answer:

  (a)  x = -7, 1

Step-by-step explanation:

In most cases, it is useful to follow the directions. This can be solved easily by completing the square.

Completing the square

The square is completed by adding the square of the x-term coefficient to both sides.

  x² +6x +9 = 7 +9 . . . . . add 9

  (x +3)² = 16 . . . . . . . . simplify . . . . write the left side as a square

The square is now complete. We finish the solution by taking the square root.

  x +3 = ±√16 = ±4 . . . . take the square root

  x = -3 ±4 . . . . . . . . . subtract 3

  x = -7, 1

EXTRA POINTS HELP ASAP!
x + x/3 = 4/9
solve for x

Answers

Answer:

x=1

Step-by-step explanation:

1 + 1/3 = 4/9

1/3 also equals 3/9

hope this helped :)

Answer :

Value of x is 1 / 3

Step-by-step explanation :

>> (3 × x + x / 3) = 4 / 9

>> (3x + x / 3) = 4 / 9

>> (4x / 3) = 4 / 9

>> 4x × 9 = 3 × 4

>> 36x = 12

>> x = 12 / 36

>> x = 6 / 18

>> x = 3 / 9

>> x = 1 / 3

A parachute speed free fall reaches 45 meters per second what is this speed in feet per second at this speed how many feet will the parachutist fall during 5 seconds of free fall in your computations assume that 1 meter is equal to 3.3 feet. Don’t round your answers

Answers

The speed is:

S = 742.5ft

The distance that the parachutist falls in 5 seconds is:

D = 742.5ft

How to get the speed in feet per second?

We know that the speed in free fall is:

S = 45 m/s.

We know that:

1 m = 3.3ft

Then we can rewrite the speed as:

S = 45 m/s = 45 *(3.28ft)/s = 148.5 ft/s

Then, the distance that the parachutist falls during 5 seconds is:

D = S*5s = (148.5 ft/s)*5s = 742.5ft

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A music store owner noted that cd sales had dropped 23% from one quarter to the next. if the owner sold 715 units in the first quarter, how many did she sell in the next quarter?
round your answer to the nearest whole unit of cds. do not include units with your answer.

help please what's the correct answer

Answers

If the sales had dropped 23% then music store had sold 551 units in the second quarter.

Given that a music store had sold 715 units in first quarter and sales had dropped by 23%.

We are required to determine the sales in the second quarter.

Percentage is the number or ratio expressed in terms of 100. It is expressed as %.

Sales in first quarter=715 units

Decrease in sales=23%

In units ,decrease=715*23%

=715*23/100

=164.45

Sales of second  quarter=715-164.45

=550.55

After rounding we will get 551.

Hence if the music store sold 715 units in first quarter then the units sold by music store in second quarter 551 units.

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WILL MAKE BRAINLIEST!! Angles a and b are vertical angles. If m

Answers

Answer: 127

Step-by-step explanation:

angle b is 127 as well because they're vertical angles and vertical angles are equal to each other.

Please help its confusing meeeeee

Answers

Answer:

p = 21.4 cm

∠P = 44°

Step-by-step explanation:

Apply the Pythagorean Theorem to solve for the length of p.

p² + 21² = 30²p² = 900 - 441p² = 459p = √459[tex]\fbox {p = 21.4 cm}[/tex]

Now, take the inverse sine function to find angle P :

sin⁻¹ (opposite side / hypotenuse)sin⁻¹ (21/30)sin⁻¹ (0.7)[tex]\boxed {44^{o}}[/tex] (approximately)

Answer:

  a) 21.4 cm

  b) 45.6°

Step-by-step explanation:

The mnemonic SOH CAH TOA is intended to remind you of the relationships between trig functions and sides of a right triangle. Here, two relevant function are ...

  Cos = Adjacent/Hypotenuse

  Tan = Opposite/Adjacent

b) Angle P

The hypotenuse of the triangle, and the side adjacent to angle P are given, so we have ...

  cos(P) = (21 cm)/(30 cm)

The angle value can be found using the inverse cosine function:

  P = arccos(21/30)

  P ≈ 45.6°

a) Side p

Now, we know angle P and the side adjacent to it. We want to find the measure of side p, which is opposite the angle. This can be done using either the sine function or the tangent function. Here, we choose to use the tangent function.

  tan(P) = p/21

  p = 21×tan(P) = 21·tan(45.573°)

  p ≈ 21.4 . . . . cm

__

Additional comment

In the attached, part of the calculator keypad is shown so you can see that the inverse cosine function is the 2ND function of the Cos key. The calculator mode is set to DEG (lower left of display) so that angles are in units appropriate to this problem.

Of course, you can always use the Pythagorean theorem to find the length of side p. More calculations are involved, so we used trig functions instead. Note that the angle P must be found first using the approach here, and its value must be retained with enough significant digits to ensure accuracy in the 'p' calculation.

what is the equation of the line containing the points (3,1) (9,3) and (27,9)

Answers

The equation of the line containing the points (3,1) (9,3) and (27,9) is y = 1 / 3x

How to find equation of a line?

The equation of a line can be found as follows:

y = mx + b

where

m = slopeb = y-intercept

Therefore,

using  (3,1) (9,3)

m =  3 - 1 / 9 - 3 = 2 / 6 = 1 / 3

using (3, 1)

1 = 1 / 3(3) + b

1 = 1 + b

b = 0

Therefore,

y = 1 / 3x

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A man spends 1/4 of his salary on food and 1/8 on transportation. His salary is Rs. 50,000
i) Find his total expenses as a fraction of the salary
ii) Find the amount of salary he spent
iii) Find the remaining balance of the salary

Answers

total expenses= 1/4 + 1/8

the denominators should be equal to add the values.

1/4×2(divide both the numerator and denominator by two)

=2/8

=2/8+1/8

3/8//

3/8(fraction of the salary he spent)

3/8 of the salary

3/8×50,000

R.s 6250

balance = 50,000-6,250

= R.s 43,750//

help me to slove this​

Answers

Do lengeth times wideth, pi times the radius of the circle

Answer:

1. pi.      2.49-12.25pi

Step-by-step explanation:

Which answer best describes the complex zeros of the polynomial function? f(x)=x3+x2+10x+10

Answers

"The function has one real zero and two nonreal zeros. The graph of the function intersects the x-axis at exactly one location."

Polynomial functions are equations such as quadratic and cubic equations that take only the non-negative integer power of a variable or a positive integer exponent. For example, 2x + 5 is a polynomial with an exponent equal to 1.

A polynomial function is an expression that is a combination of variables of different degrees, non-zero coefficients, positive exponents (of variables), and constants. For example, f (b) = 4b2 – 6 is a polynomial of'b'and has a degree of 2.

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Find the surface area of the composite solid. Round your answer to the nearest hundredth.
A. 424.11 ft²
B. 438.00 ft²
C. 449.00 ft²
D. 549.78 ft²

Answers

The surface area of the composite solid is 579.84 square feet

How to determine the surface area of the solid?

The composite solid that completes the question is added as an attachment

From the attached figure, we have the following figures:

Rectangular prismCylinder

The surface area of a rectangular prism is

A = 2(lw + lh + wh)

Using the dimensions of the prism, we have:

A = 2(6 * 11 + 6 * 8 + 8 * 11)

This gives

A = 404

The surface area of a cylinder is

A = 2πr^2 + 2πrh

Using the dimensions of the cylinder, we have:

A = 2 * 3.14 * 4^2 + 2 * 3.14 * 4 * 5

Evaluate

A = 226.08

The area of the circle between both shapes is

A = πr^2

This gives

A = 3.14 * 4^2

A = 50.24

The surface area of the composite solid is then calculated as:

Surface area = Area of rectangular prism + Area of cylinder - Area of circle

This gives

Surface area = 404 + 226.08 - 50.24

Evaluate

Surface area = 579.84

Hence, the surface area of the composite solid is 579.84 square feet

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What effect does 'h' have on the graph of a parabola?
Vertical stretch
Vertical compression
Vertical shift
Horizontal shift

Answers

The effect that  'h' have on the graph of a parabola is Horizontal shift or translation .

What is translation?

A translation is the movement of  a shape up, down , this can also be movement from side to side.

Even though there is movement,   its appearance remains the same in any other way, hence, h values cause left or right movement with respect to the graph.

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CSN SOMEONE PLEASE HELP ASAP

If the ADA guidelines state that a
wheelchair ramps angle of elevation
must equal 4.8°. would a
ramp with the
following dimensions be up to code?
Show your work and explain. (Picture is
not drawn to scale.)
3.5 ft

40 ft

Answers

The ramp with the following dimension won't obey the ADA guideline because the angle is more than 4.8 degrees.

How to find the angle of elevation of the ramp?

The angle of elevation of the ramp can be found using trigonometric ratios.

Therefore,  the angle of elevation must be equal to 4.8 degrees to obey the ADA guidelines .

Hence,

tan ∅ = opposite / adjacent

opposite side = 3.5 ft

adjacent side = 40 ft

Therefore,

tan ∅ = 3.5 / 40

∅ = tan ⁻¹ 0.0875

∅ = 5.00064459756

∅ = 5 degrees

Therefore, the ramp with the following dimension won't obey the ADA guideline because the angle is more than 4.8 degrees.

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