The volume of a cone whose height h and base radius is r is given by the formula of the volume of a cone,express r in terms of v,pie and h and find the value of h when the volume of the cone is 660cm raise to power 3,where r is 14cm(pie=22/7)

Answers

Answer 1

The formula for the volume of a cone is:

V = (1/3)πr^2h

Solving for r:

V = (1/3)πr^2h

3V = πr^2h

r^2 = (3V)/(πh)

r = sqrt[(3V)/(πh)]

Given that V = 660cm^3, h = 14cm and π = 22/7:

r = sqrt[(3 × 660)/(22/7 × 14)] ≈ 7 cm

So the radius is approximately 7 cm.

To find the value of h:

V = (1/3)πr^2h

660 = (1/3)(22/7)(7^2)h

660 = (22/3)(49/7)h

660 = (22/3)(7)h

h = 660 / [(22/3)(7)]

h = 9.45 cm (rounded to two decimal places)

Therefore, the value of h when the volume of the cone is 660 cm^3 is approximately 9.45 cm.


Related Questions

Tree Diagrams
'daT vo
1. A family has four children. How many outcomes are in the sample space that indicates the sex of the children?
Assume that the probability of male (M) and the probability of female (F) are each 1/2. Use a tree diagram to model this situation:
Child 1
Child 2
Child 3
Child 4
Possible Outcomes
2. What is the probability that all children are males?
3. What is the probability that they will have all one gender of children (all males or all females)?
4. What is the probability that there will be at least 2 female children?
5. You are bored and decide to flip a coin, then roll a 6 sided die, then flip a coin, then roll a 3-sided die. Create a tree diagram to model all possible outcomes
6. How many possible outcomes are there?
7. What is the probability of getting only heads on both coin tosses?

Answers

The total possible outcomes is 16, the probability that all children are males is 1/16, the probability of having all one gender is 1/8

What is the possible outcomes

1. The tree diagram for the sex of the children is as follows:

Child 1: M / F

Child 2: M / F

Child 3: M / F

Child 4: M / F

Possible Outcomes: MMMM, MMMF, MMFM, MFMF, FMFM, FMMF, FMFF, FFFF

There are 2 options for each child, so the total number of possible outcomes is 2 x 2 x 2 x 2 = 16.

2. The probability that all children are males is 1/2 x 1/2 x 1/2 x 1/2 = 1/16.

3. The probability of having all one gender of children is the sum of the probability of having all boys and the probability of having all girls. Each of these outcomes has a probability of 1/16, so the total probability is 1/16 + 1/16 = 1/8.

4. The easiest way to solve this problem is to find the probability of having no female children, and then subtract that from 1. The probability of having no female children is (1/2)^4 = 1/16, so the probability of having at least 2 female children is 1 - 1/16 - 1/16 = 7/8.

5. The tree diagram for flipping a coin, rolling a 6-sided die, flipping a coin, and rolling a 3-sided die is as follows:

C / H

/

1-6 1-3

\ /

H / T

The first branch represents the coin flip, the second branch represents the roll of the 6-sided die, the third branch represents the second coin flip, and the fourth branch represents the roll of the 3-sided die.

6. There are 2 options for the first coin flip, 6 options for the second branch, 2 options for the second coin flip, and 3 options for the fourth branch, so the total number of possible outcomes is 2 x 6 x 2 x 3 = 72.

7. The probability of getting only heads on both coin tosses is 1/2 x 1/2 = 1/4. Therefore, the probability of getting only heads on both coin tosses and any result on the dice is 1/4 x 1 = 1/4.

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Transposition solve for v S= 1/2 (u+v) t

Answers

The equation can be converted as: 2 (S - 1/2 u t) / t.

What is an Equation ?

An equation is a mathematical term, which indicates that the value of two algebraic expressions are equal. There are various parts of an equation which are, coefficients, variables, constants, terms, operators, expressions, and equal to sign.

Let's start by simplifying the equation using the distributive property of multiplication:

S = 1/2 u t + 1/2 v t

Next, we can isolate the variable v by subtracting 1/2 u t from both sides of the equation:

S - 1/2 u t = 1/2 v t

Now we can multiply both sides of the equation by 2 to eliminate the fraction:

2 (S - 1/2 u t) = v t

Finally, we can solve for v by dividing both sides of the equation by t:

v = 2 (S - 1/2 u t) / t

Therefore, the solution for v is v = 2 (S - 1/2 u t) / t.

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PQRS is a rectangle. PR = 26. What is the value of x? *

not all multiple choice is show

Answers

The value of X from the given rectangular figure above would be = 6.5. That is option A.

What is a rectangle?

A rectangle can be defined as a quadrilateral that has four sides, four vertices, and four angles.

In a rectangle, when two diagonal line divides it, the two diagonals are of the same length.

That is;

Line PR = Line SQ

Half of PR = ER

Half of SQ = QE

But QE = 2x

PR = 26

QE = 1/2 × 26 = 2x

13= 2x

X = 13/2

X= 6.5

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Triangle RST is similar to triangle UVW. Find the measure of side UV. Figures are not drawn to scale

Answers

The triangle has 3 interior angles and 3 sides, the sum of interior angles is always equal to 180 degree. The measure of the side UV of a triangle  is 4.2

Types of triangle

on considering the length of the sides, the triangle is classified into different types

Acute triangle :All three angles of an acute triangle measure less than 90".

Obtuse Triangle :One angle of an obtuse triangle measures more than 90%

Right Triangle: One angle of a right triangle measures 90°

Isosceles Triangle:  two sides of an isosceles triangle have the same length

Equilateral Triangle: All three sides of an equilateral triangle have the same length

Scalene Triangle: No sides of a scalene triangle are the same length.

the sum of the interior angles of a triangle is always equal to 180°

given TR=2,WU=6,RS=1.4,UV=?

let UV be x,

x/1.4=6/2

cross multiply

2x=6*1.4

2x=8.4

x=8.4/2

x=4.2

hence UV=4.2

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need help i dont understand

Answers

We can conclude that ∠BDC is congruent to ∠BAC and ∠BEC.

What is circle?

A circle is a shape consisting of all points in a plane that are at a given distance from a given point known as the centre.

Given is a circle as shown in the image.

The triangles are on the same base BC.

From this we can conclude that -

∠BEC = ∠BAC = ∠BDC

Therefore, we can conclude that ∠BDC is congruent to ∠BAC and ∠BEC.

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Directions - Evaluate the following exponential function for the x-values in the table. Complete the table with y-values.



=
9

(
1
3
)

y=9⋅(
3
1

)
x

Answers

Sure, here's a complete table of y-values for different x-values:

x y = 9*(13)^x

0 9

1 117

2 1521

3 19773

4 256809

5 3335777

6 43363161

7 562002993

8 7304038917

9 94852405821

What is function?

In mathematics, a function is a relation between a set of inputs (the domain) and a set of possible outputs (the codomain) with the property that each input is related to exactly one output. Functions are often represented using function notation, where the input is the independent variable and the output is the dependent variable. Functions are used to model relationships between different quantities or variables, and are an essential tool in many areas of mathematics, science, engineering, economics, and more. They allow us to make predictions, analyze data, and understand complex systems.

Here,

The exponential function y = 9*(13)^x means that for any given value of x, we can calculate the corresponding value of y by plugging in x and performing the calculation. The base of the exponential function is 13, which means that the function will increase rapidly as x gets larger.

For example, if x = 0, then y = 9*(13)⁰ = 91 = 9.

If x = 1, then y = 9(13)¹ = 913

= 117.

If x = 2, then y = 9(13)² = 9*169

= 1521.

And so on.

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Angle F and angle G are complementary. Angle F measures (2x+7) and angle G measure 18 find the value of X and the measure of each angle.

Answers

Step-by-step explanation:

Complementary means they sum to 90 degrees.

Complementary means they sum to 90 degrees.

Thus F + G = 90.

Complementary means they sum to 90 degrees.

Thus F + G = 90.

Substituting the values in, we have:

Complementary means they sum to 90 degrees.

Thus F + G = 90.

Substituting the values in,

we have:2x + 7 + 18 = 90

Complementary means they sum to 90 degrees.

Thus F + G = 90.Substituting the values in,

we have:2x + 7 + 18 = 902x + 25 = 90

Complementary means they sum to 90 degrees.Thus F + G = 90.Substituting the values in, we have:2x + 7 + 18 = 902x + 25 = 902x = 65

Complementary means they sum to 90 degrees.Thus F + G = 90.Substituting the values in, we have:2x + 7 + 18 = 902x + 25 = 902x = 65x = 32.5

Complementary means they sum to 90 degrees.Thus F + G = 90.Substituting the values in, we have:2x + 7 + 18 = 902x + 25 = 902x = 65x = 32.5

Angle F = 72 degrees

Complementary means they sum to 90 degrees.Thus F + G = 90.Substituting the values in, we have:2x + 7 + 18 = 902x + 25 = 902x = 65x = 32.5Angle

F = 72 degrees Angle G = 18 degrees

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The point (-sqrt2/2, sqrt2/2) is the point at which the terminal ray of angle theta intersects the unit circle. What are the values for cosine and cotangent functions for angle theta

Answers

Hence, the values of cοsine and cotangent functions for angle theta are -√(2)/2 and -1, respectively.

What precisely does a degree angle mean?

Angles between 0 and 90 degrees are cοnsidered acute. Obtuse angles fall within this range and vary frοm 90° to 180°.  A right angle is knοwn as an angle with a 90-degree angle (= 90°).

The pοint (-√(2)/2, √(2)/2) lies on the unit circle in the second quadrant, which means that the cοrresponding angle theta has a reference angle of pi/4.

The cοsine of theta is the x-coordinate of the point on the unit circle corresponding to theta. Since the x-coοrdinate of the given point is -√(2)/2, we have:

cοs(θ) = -√(2)/2

The cοtangent of theta is the ratio of the cosine of theta to the sine of theta. We can find the sine of theta by using the Pythagοrean theorem, since the pοint (-√(2)/2, √(2)/2) lies on the unit circle:

sin(θ) = √(1 - cos²(θ)) = √(1 - (-√(2)/2)²) = √(2)/2

Therefοre, we have:

cot(θ) = cos(θ) / sin(θ) = (-√(2)/2) / (√(2)/2) = -1

Hence, the values of cοsine and cotangent functions for angle theta are -√(2)/2 and -1, respectively.

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Consider an investment of $2800 at an APR of 5% compounded monthly. Use the formula that gives the exact doubling time to determine exactly how long it will take for the investment to double.

Express your answer in terms of the number of whole years and remaining months it will take the investment to double. Give your answers as whole numbers.

Answers

It will take {log(1 - r/n)/n} years to exactly double your investment.

What is the formula to calculate compound interest?

The formula for compound interest is -

[tex]$A = P(1 + \frac{r}{n})^{nt}[/tex]

Given is that an investment of $2800 made at an APR of 5% compounded monthly.

The formula for compound interest is -

[tex]$A = P(1 + \frac{r}{n})^{nt}[/tex]

For A = 2P, we can write -

Substituting 2P = A, we get -

2P = P(1 + r/n)^nt

2 = (1 + r/n)^nt

log 2 = log {(1 + r/n)^nt}

log 2 = (nt) log(1 + r/n)

(log 2)/log(1 + r/n) = nt

{t} = log{2 - 1 - r/n}/n

{t} = log{1 - r/n}/n

Therefore, it will take {log(1 - r/n)/n} years to exactly double your investment.

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The number of pizzas a restaurant can make varies directly with the amount of time the restaurant is open.

Answers

The two correct options for time and work problem are: (a) and (d)

(a) The restaurant can make 24 pizzas in 5 hours

(d) The restaurant can make 48 pizzas in 10 hours

What is time and work in mathematics?

Time and work are fundamental to how work is done at the moment. The time and work problem gives us the exact relationship between workers and the number of days and hours it takes to complete a task. 

Solution according to the question:

Given, the restaurant can make 12 pizzas in 2.5 hours

So, when we double the time of work, the number of pizzas will also be doubled, i.e

24(12×2) pizzas in 5(2.5 ×2), hence option (a) correct.

Also, 10 hours is four times of 2.5 hours.

Thus, in 10 hours the restaurant will make 48 pizzas, so option (d) is the other correct option.

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Perform the following conversion:
7.0 cm to ft

Answers

Answer: 0.229659

Step-by-step explanation: Since you are converting centimeters to feet, you have to divide the centimeters by exactly, 30.48. so 7 / 30.48 equals 0.229659.

one 250 mL serving of tomato juice contains 2/5 the recommended daily intake of vitamin C. how much tomato juice does a person need to consume to get the full recommended daily intake?

Answers

To acquire the complete recommended daily dose of vitamin C, an individual would need to drink 625 mL, or 2.5 cups, of tomato juice.

How is vitamin C calculated?

Calculation. For a common solution Mass Ascorbic acid equals Mole Iodine times Volume of Iodine multiplied by 176.12 to get 91.54 mg per mole of Iodine. At first, 100 mg of ascorbic acid was consumed, making it the complete amount of ascorbic acid.

Let's find out how much vitamin C there is in 250 mL of tomato juice first:

40% vitamin C in 250 mL = 100% vitamin C in x mL

Solving for x, we get:

x = (100% / 40%) * 250 mL

x = 625 mL

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A vending machine has 6 different colors of gumballs (red, blue, pink, yellow, green, purple) and an equal chance of dispensing each. Martin buys 6 gumballs. What is the probability of Martin getting exactly 3 pink gumballs?

Answers

The prοbability οf Martin getting exactly 3 pink gumballs οut οf 6 is apprοximately 0.1608 οr 16.08%.

What is prοbability?

Prοbability is a measure οf the likelihοοd οr chance οf an event οccurring. It is expressed as a number between 0 and 1, with 0 indicating an impοssible event and 1 indicating a certain event. The prοbability οf an event can be calculated by dividing the number οf favοrable οutcοmes by the tοtal number οf pοssible οutcοmes.

In the given scenariο, there are 6 different cοlοrs οf gumballs, and each has an equal chance οf being dispensed. Therefοre, the prοbability οf getting any particular cοlοr is 1/6.

Tο find the prοbability οf Martin getting exactly 3 pink gumballs οut οf 6, we need tο use the binοmial prοbability fοrmula:

[tex]\mathrm{P(X=k) = C(n,k) \times p^k \times (1-p)^{(n-k)}}[/tex]

where:

P(X=k) is the prοbability οf getting exactly k successes

n is the tοtal number οf trials (in this case, 6)

k is the number οf successes we want (in this case, 3)

p is the prοbability οf success (in this case, the prοbability οf getting a pink gumball, which is 1/6)

C(n, k) is the number οf cοmbinatiοns οf n things taken k at a time, which can be calculated as n! / (k! × (n-k)!).

Plugging in the values, we get:

P(X=3) = C(6,3) × (1/6)³ × (5/6)³

= (6! / (3! × 3!)) × (1/6)³ × (5/6)³

= 20 × (1/216) ×  (125/216)

= 0.1608

Therefοre, the prοbability οf Martin getting exactly 3 pink gumballs οut οf 6 is apprοximately 0.1608 οr 16.08%.

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Can someone help me please i really need help with this.

use the Remainder Theorem and synthetic division please

Answers

The value of the functions are,

⇒ f (- 10) = 20201

⇒ f (2) = 17

⇒ f (3) = 143

What is mean by Function?

A relation between a set of inputs having one output each is called a function. and an expression, rule, or law that defines a relationship between one variable (the independent variable) and another variable (the dependent variable).

Given that;

The value of function is,

⇒ f (x) = 2x⁴ + x² - 10x + 1

Now, We can find all the values as;

At x = - 10;

⇒ f (x) = 2x⁴ + x² - 10x + 1

⇒ f (- 10) = 2 (- 10)⁴ + (- 10)² - 10 (- 10) + 1

⇒ f (- 10) = 20000 + 100 + 100 + 1

⇒ f (- 10) = 20201

At x = 2;

⇒ f (x) = 2x⁴ + x² - 10x + 1

⇒ f (2) = 2 (2)⁴ + (2)² - 10 (2) + 1

⇒ f (2) = 32 + 4 - 20 + 1

⇒ f (2) = 17

At x = 3;

⇒ f (x) = 2x⁴ + x² - 10x + 1

⇒ f (3) = 2 (3)⁴ + (3)² - 10 (3) + 1

⇒ f (3) = 162 + 9 - 30 + 1

⇒ f (3) = 143

Thus, The value of the functions are,

⇒ f (- 10) = 20201

⇒ f (2) = 17

⇒ f (3) = 143

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my last question for today, thx for the help

Answers

The surface area of the cylinder is 150.72cm²

What is surface area of cylinder?

A cylinder is a three-dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance. These bases are normally circular in shape (like a circle) and the center of the two bases are joined by a line segment, which is called the axis.

The surface area of a cylinder is the addition of the area of the faces on the cylinder.

The surface area of a cylinder = 2πr(r+h)

= 2×3.14 × 3( 3+5)

= 18.84 × 8

= 150.72cm²

therefore the surface area of the cylinder is 150.72cm²

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what is the answer i’m lost

Answers

Note that where the conditions above subsist the height determined by the other colleague is not the same so the answer is No. To solve this problem, you need to be conversant with the Pythagorean Theorem, and Angle Bisector Theorems.

What does the Pythagorean Theorem say?

The Pythagorean Theorem states that in a right triangle, the square of the length of the hypotenuse (the longest side) is equal to the sum of the squares of the lengths of the other two sides.

The formula for the Pythagorean Theorem is:

c² = a² + b²

where "c" represents the length of the hypotenuse and "a" and "b" represent the lengths of the other two sides (the legs) of a right triangle.

With this, we can find the c for the lower Right angle triangle on the left and B for the lower right angle triangle on the right.

Since C² = A² + B²

B = √( A²- C²)

B = √( 9.5²- 6²)

B [tex]\approx[/tex] 7.36546


To determine c on the right angle to the left,

c² = a² + b²

c = √(a² + b²)

c = √(5.5² + 7.2²)

c = 9.060353194

c [tex]\approx[/tex] 9.06

With the postulate of the Angle Bisector Theorem, we can begin to find the height of the two upper right angle triangles.

The Angle Bisector Theorem states that in a triangle, an angle bisector of a vertex of the triangle divides the opposite side into two segments that are proportional to the lengths of the other two sides.

In other words, if a line segment bisects an angle of a triangle and intersects the opposite side or the extension of the opposite side, then the ratio of the lengths of the segments on the opposite side is equal to the ratio of the lengths of the other two sides of the triangle.

As seen from the image, the right angles where each lady is holding is bisected. This means that we have for each Triangle Two angles and one side.

Right Angle on the Left:

90°

45°; and

7.2ft

Given the above, Since the angle opposite the height is 45 degrees, we know that the ratio of the height to the base is 1:1, or h/7.2 = 1/1.

Therefore, the height of the right triangle is:

h = 7.2 × 1

h = 7.2 ft

So the height of the right triangle is 7.2 feet.

Right Angle on the Right :

90°

45°; and

7.36546ft

Given the above, we can use the trigonometric ratios of the angles in the right triangle.

Since the angle opposite the height is 45 degrees, we know that the ratio of the height to the base is 1:1, or h/7.36546 = 1/1.

Therefore, the height of the right triangle is:

h = 7.36546 × 1

h = 7.36546 ft

So the height of the right triangle is 7.36546 feet.


So both heights approximated to the nearest tenth:

7.36546 feet is approximately 7.4 feet7.2 feet remains the same as it is already to the nearest tenth.

Since 7.2 ≠ 7.4, the heights are not equal.

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The distance between 2 station is 300km two motorcyclist start at same time one speed is 7km per hr find speed of both bike

Answers

Answer: The problem statement is incomplete. It is given that one motorcyclist is traveling at a speed of 7 km/hr, but the speed of the other motorcyclist is not given. We cannot solve the problem without knowing the speed of the other motorcyclist.

Please provide additional information, such as the time taken by both motorcyclists to cover the distance, or any other information that may be relevant to the problem.

Step-by-step explanation:

the box and whisker plots below show the average monthly temperature for Mexico City, Mexico, and Shanghai, china, in degrees Fahrenheit

Answers

The percentage of temperatures for Shanghai between 46ºF and 78ºF is given as follows:

50%.

What does a box-and-whisker plot shows?

A box and whisker plots shows these five features from a data-set, listed as follows:

The minimum non-outlier value.The 25th percentile, which is the median of the bottom 50%.The median, which splits the entire data-set into two halfs, the bottom 50% and the upper 50%.The 75th percentile, which is the median of the upper 50%.The maximum non-outlier value.

For Shanghai, the quartiles are given as follows:

Q1 = 46, Q3 = 78.

Hence the temperatures between 46 and 78ºF represent the interquartile range, containing the middle 50% of observations.

Missing Information

The problem is given by the image presented at the end of the answer.

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A pet store has 4 bearded dragons and 9 geckos. What is the ratio of geckos to total reptiles?

Answers

Answer:

9 to 4

Step-by-step explanation:

Can someone help me find the volume of the pentagonal pyramid

Answers

Given:-[tex] \rm{Base ( B ) = \bold{75m²}}[/tex]

[tex] \: [/tex]

[tex] \rm{Height ( H ) = \bold{7.4m}}[/tex]

[tex] \: [/tex]

To find:-[tex] \textrm{Volume of pentagonal pyramid = ?}[/tex]

[tex] \: [/tex]

By using formula:-

[tex] \color{gray}{ \bigstar} \blue {\boxed{ \rm{ \green{Volume \: of \: Pyramid = \frac{1}{3} Bh}}}}[/tex]

[tex] \: [/tex]

Solution:-

[tex] \rm{Volume \: of \: Pyramid = \frac{1}{3} Bh} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:\rm \: = \frac{1}{3} \times 75 \times 7.4 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \rm = \frac{1} {\cancel{3} }\times \cancel{555 } \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \underline\color{darkgreen}\boxed{ \rm{ = 185}}[/tex]

[tex] \: [/tex]

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

hope it helps! :)

Help please, Thank you

Answers

The inverse of the matrix is

[tex]$$\left[\begin{array}{cc}1 & -\frac{1}{2} \\-3 & 2\end{array}\right]$$[/tex]

What is the inverse matrix?

Generally, The inverse of a [tex]$2 \times 2$[/tex] matrix can be found using the formula [tex]$\frac{1}{a d-b c}\left[\begin{array}{cc}d & -b \\ -c & a\end{array}\right]$[/tex] where a d-b c is the determinant.

Find the determinant.

Since the determinant is non-zero, the inverse exists.

Substitute the known values into the formula for the inverse.

[tex]\frac{1}{2}\left[\begin{array}{cc}2 & -1 \\-6 & 4\end{array}\right][/tex]

Multiply 1/2 by each element of the matrix.

[tex][\begin{array}{cc}\frac{1}{2} \cdot 2 & \frac{1}{2} \cdot-1 \\\frac{1}{2} \cdot-6 & \frac{1}{2} \cdot 4\end{array}\right][/tex]

Simplify each element in the matrix.

[tex]$$\left[\begin{array}{cc}1 & -\frac{1}{2} \\-3 & 2\end{array}\right]$$[/tex]

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Segments SQ, SU, and QU are tangent to the circle. Segment RQ measures 15 cm, segment ST measures 4 cm, and segment VU measures 25 cm. What is the perimeter of triangle QSU?

Answers

The perimeter of the triangle QSU is 88 cm.

What is Perimeter?

Perimeter of a straight sided figures or objects is the total length of it's boundary.

Given a circle.

And there are three tangents drawn intersecting the circle at points R, T and V.

We have the circle theorem that the tangents that meet at the same point are equal in length.

Using the theorem,

SR = ST

RQ = VQ

TU = VU

We have, segment RQ measures 15 cm, segment ST measures 4 cm, and segment VU measures 25 cm.

So, SR = ST = 4 cm

TU = VU = 25 cm

VQ = RQ = 15 cm

Perimeter of ΔQSU = (2 × 4) + (2 × 25) + (2 × 15) = 88 cm

Hence the perimeter is 88 cm.

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Please help me with this math problem that I have how do I solve this problem? Thank you to anyone that wants to help me :)!.

Answers

Answer:68

Step-by-step explanation:

You can first subtract 104-36=68 so,68+36=104

Answer:

  68

Step-by-step explanation:

You want to know the number of marbles Chloe originally had in her collection if adding 36 marbles gave her a total of 104.

Equation

You can let a variable (o) represent the original number of marbles. You would choose this because the original number of marbles is what you're asked to find. It never hurts to use a variable name that reminds you of what it stands for.

The problem statement tells you that adding 36 to the original number gives a total of 104. As an equation, this looks like ...

  o + 36 = 104 . . . . . . adding 36 to o gives 104

Solution

The properties of equality tell you that you can subtract the same number from both sides of the equation without changing the value of the variable.

Here, we want the variable by itself, so we want to get rid of the added number 36. We do that by subtracting 36 from both sides of the equation:

  o +36 -36 = 104 -36 . . . . . subtract 36 from both sides

  o = 68 . . . . . . . . . . simplify

This solution tells us that Chloe originally had 68 marbles.

__

Additional comment

The way to solve this, or any, "word problem" is to read and understand the relationships the words are telling you, and what the words are asking for. Then write those relationships as math expressions, choosing variables and a procedure that will give you what the question is asking for.

Here, we could choose a variable that represents the quantity we want to find. That is not always the case.

Sometimes, you have to find an "intermediate" value that you need in order to be able to answer the ultimate question. You're not done when you find that intermediate value; you're only done when you are able to answer the question asked.

If � p and � q vary inversely and � p is 18 when � q is 28, determine � q when � p is equal to 72.

Answers

Answer:

q = 7

Step-by-step explanation:

p and q vary inversely:

p = k/q

If p = 18, q = 28, find k:

18 = k/9k = 18*28 = 504

The equation is:

p = 504/q

When p = 72, q is:

18 = 504/qq = 504/72q = 7

At the Fidelity Credit Union, a mean of 7.1 customers arrive hourly at the drive-through window. What is the probability that, in any hour, more than 3 customers will arrive? Round your answer to four decimal places.

Answers

The answer of the given question based on the probability is, probability that, in any hour, more than 3 customers will arrive is approximately 0.9227.

What is Experiment?

a experiment is the outcome of the event, the possible outcomes  are the number of times it occurrences.

To solve this problem, we will use the Poisson distribution,

we are given that the mean rate of customer arrivals is 7.1 per hour. We want to find the probability that more than 3 customers will arrive in any hour.

The Poisson distribution is defined as:

[tex]P(X = k) =(e^{(-\lambda)}*\lambda^k)/k![/tex]

where X is the random variable representing the number of events (in this case, customer arrivals), λ is the mean rate of occurrence, e is the mathematical constant e (approximately 2.71828), and k is the number of events we are interested in.

To find the probability of more than 3 customers arriving, we need to calculate the probability of 4, 5, 6, 7, 8, 9, and so on customers arriving, and add these probabilities together. This can be time-consuming, so instead we can use the complement rule and find the probability of 0, 1, 2, or 3 customers arriving, and subtract this from 1:

P(X > 3) = 1 - P(X <= 3)

To calculate P(X <= 3), we can use the Poisson distribution with λ = 7.1 and k = 0, 1, 2, and 3:

[tex]P(X = 0) = (e^{(-7.1)} * 7.1^0) / 0! = 0.000832[/tex]

[tex]P(X = 1) = (e^{(-7.1)} * 7.1^1) / 1! = 0.005904[/tex]

[tex]P(X = 2) = (e^{(-7.1)} * 7.1^2) / 2! = 0.020981[/tex]

[tex]P(X = 3) = (e^{(-7.1)} * 7.1^3) / 3! = 0.049546[/tex]

Adding these probabilities together, we get:

P(X <= 3) = 0.000832 + 0.005904 + 0.020981 + 0.049546 = 0.077263

Therefore, the probability of more than 3 customers arriving in any hour is:

P(X > 3) = 1 - P(X <= 3) = 1 - 0.077263 = 0.9227 (rounded to four decimal places)

So the probability that, in any hour, more than 3 customers will arrive is approximately 0.9227.

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Help meeee! Please I need help

Answers

Answer:

D

Step-by-step explanation:

3.5 is changing for every trophy I order so it has a variable. For example  say I want 3 trophies each trophy is 3.50 substitute 3 for x. 3.50(3) and that would give me the cost for 3 trophies same thing for the 7.50. The initial fee (you only pay the initial fee once) for company p is 25. The initial fee for company R is 17. At the end the question asks for the inequality so that company p is less than(<) company R. The only inequality that fits this is D.

Hope this helps :-)

In order to start a small​ business, a student takes out a simple interest loan for ​$8000.00 for 9 months at a rate of 9.00​%.
a. How much interest must the student​ pay?
b. Find the future value of the loan.

Answers

Answer:

(a) The interest on a simple interest loan is calculated using the formula:

Interest = Principal x Rate x Time

where:

Principal is the amount of the loan

Rate is the interest rate per time period

Time is the duration of the loan in the same time period as the interest rate

In this case, the principal is $8000.00, the rate is 9.00% per year, and the time is 9 months. To calculate the interest, we need to convert the time to years by dividing by 12:

Time in years = 9 months / 12 months per year = 0.75 years

Plugging in the values, we get:

Interest = $8000.00 x 0.09 x 0.75

Interest = $540.00

Therefore, the student must pay $540.00 in interest.

(b) The future value of a simple interest loan is calculated using the formula:

Future Value = Principal + Interest

In this case, the principal is $8000.00 and the interest is $540.00, so the future value is:

Future Value = $8000.00 + $540.00

Future Value = $8540.00

Therefore, the future value of the loan is $8540.00.

Step-by-step explanation:

The mean of 5 numbers is 4, 4 of the numbers are 3,5,4,4 what is the missing number

Answers

Answer:

6 I think have a great day

Which sets does 4.3333333333 belong to?

rational and real numbers

irrational and whole numbers

rational and natural numbers

integers and irrational numbers

Answers

The decimal number 4.3333333... is a rational and real number. Then the correct option is A.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The decimal number is given below.

⇒ 4.333....

Let x = 4.333333333.., then 10x = 43.33333333...

10x - x = 43.33333.. - 4.333333...

9x = 39

x = 39/9

x = 13/3

The decimal number 4.3333333... is a rational and real number. Then the correct option is A.

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Answer:

Step-by-step explanation:

he's correct trust him The decimal number 4.3333333 is a rational and real number. Then the correct option is A.

For what value of n does (1/36)n=216 ?
Responses

-3
-3/2
3/2
3

Answers

The value of n for the equation (1/36)n= 216 is -1.5.

The following equation is solved by the use of exponent power rule.

The step by step explanation is given below:

convert the fraction into negative exponential form,

(36∧-1)n=216

simplify using the exponent power rule,

(a∧n)∧m = a∧n×m

Covert both sides of the equation in terms with the same base,

(6 ∧2)∧-n = 6 ∧3

Simplify the equation ,

6∧2.-n = 6∧3

Corresponding exponents are equal to ,

-2n = 3

Divide both side of the equation by 2 ,

-n= 3/2

n= - 3/2.

Therefore n = -1.5.

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