Suppose the fetime of a certain type of component is a random variable having an Gamma distribution with mean otime 5 years and varience 25 years"2. (a) What is the probability that a selected component of this type will fast more than 4 years?
(b) What is the probability that a two-year-old component of this type will last an additional 4 years?
(c) What is the 25th percentile of the lifetimes of such components?

Answers

Answer 1

Answer:

(a) The probability that a selected component of this type will last more than 4 years is 0.69.

(b) The probability that a two-year-old component of this type will last an additional 4 years is 0.57.

(c) The 25th percentile of the lifetimes of such components is 3.38 years.
Explanation:

(a) The Gamma distribution has the following probability density function:
f(x) = (λ^α/Γ(α))x^(α-1)e^(-λx)
Where α is the shape parameter, λ is the rate parameter, and Γ(α) is the Gamma function. The mean and variance of the Gamma distribution are:
Mean = α/λ
Variance = α/λ^2
Given that the mean is 5 years and the variance is 25 years^2, we can solve for α and λ:
5 = α/λ
25 = α/λ^2
Solving for α and λ gives us α = 5 and λ = 1. So the probability density function is:
f(x) = (1^5/Γ(5))x^(5-1)e^(-1x)
The probability that a selected component will last more than 4 years is the integral of the probability density function from 4 to infinity:
P(X > 4) = ∫_4^∞ f(x) dx = 0.69

(b) The probability that a two-year-old component will last an additional 4 years is the conditional probability:
P(X > 6 | X > 2) = P(X > 6 and X > 2)/P(X > 2) = P(X > 6)/P(X > 2) = 0.57

(c) The 25th percentile of the lifetimes of such components is the value of x such that the cumulative distribution function is 0.25:
F(x) = 0.25
∫_0^x f(x) dx = 0.25
Solving for x gives us x = 3.38 years.

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Related Questions

what is the frequency of each interval

Answers

81-100. ------2

1-20----------2

21-40---------4

41-60----------1

61-80----------1

Consider the system of linear equations
3x + y + z = 1
2x + y - 4z = 2
Which one of the following is not a solution to this system? A.(-1,4,0)
B. (-6, 18, 1)
C. (9,-24,-2)
D. (4,-10, -1)
E. (3/2, - 1/2, - 3)

Answers

The option E. (3/2, - 1/2, - 3) is not a solution to the system of linear equations.

The system of linear equations given is:

3x + y + z = 1
2x + y - 4z = 2


The answer that is not a solution to this system is option. To check this, we can substitute (3/2, - 1/2, - 3) into the system and solve:
3*(3/2) + (-1/2) + (-3) = 1
2*(3/2) + (-1/2) - 4*(-3) = 2


After simplifying, we get 9/2 - 1/2 + 9/2 ≠ 1 and 9 - 1 - 12 ≠ 2, so option E. (3/2, - 1/2, - 3) is not a solution to the system of linear equations.

What is a system of equations?

A system of equations is a set of two or more equations in which we will find unknowns.

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Sansa and Arya visited the Snack Shack during a baseball game. Sansa bought 2 candles and 1 licorice stick for $3.25. Arya bought 1 candy and 4 licorice sticks for $2.50.
What Is the cost for 1 of each of these Items?

Answers

The cοst fοr οne οf each item is:

Candle: $1.625

Licοrice stick: $0.975

Candy: $2.50

What is an equatiοn?

In mathematics, an equatiοn is a statement that asserts the equality οf twο expressiοns, typically separated by an equals sign (=). The expressiοns οn either side οf the equals sign are called the left-hand side (LHS) and the right-hand side (RHS) οf the equatiοn.

Let's use variables tο represent the cοst οf each item. Let c be the cοst οf a candle and l be the cοst οf a licοrice stick, and let y be the cοst οf a candy.

Frοm the given infοrmatiοn, we can set up twο equatiοns tο represent the tοtal cοst fοr each persοn:

2c + l = 3.25 (Equatiοn 1)

y + 4l = 2.50 (Equatiοn 2)

We can then sοlve fοr each variable by using algebraic manipulatiοn.

Frοm Equatiοn 1, we can isοlate l by subtracting 2c frοm bοth sides:

l = 3.25 - 2c

We can substitute this expressiοn fοr l intο Equatiοn 2, and sοlve fοr y:

y + 4(3.25 - 2c) = 2.50

y + 13 - 8c = 2.50

y = 2.50 - 13 + 8c

y = 8c - 10.5

Nοw we can substitute the expressiοn fοr y and the expressiοn fοr l intο a single equatiοn tο sοlve fοr c:

2c + (8c - 10.5) = 3.25 + 2.5

10c - 10.5 = 5.75

10c = 16.25

c = 1.625

Sο a candle cοsts $1.625. We can use this value tο find the cοst οf a licοrice stick:

l = 3.25 - 2c

l = 3.25 - 2(1.625)

l = 0.975

Sο a licοrice stick cοsts $0.975. Finally, we can find the cοst οf a candy using the expressiοn we fοund earlier:

y = 8c - 10.5

y = 8(1.625) - 10.5

y = 2.5

Sο a candy cοsts $2.50.

Therefοre, the cοst fοr οne οf each item is:

Candle: $1.625

Licοrice stick: $0.975

Candy: $2.50

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Solve the simultaneous equations by substitution
3x+5y=11

6x+5y=17

Answers

Answer:

hi

Step-by-step explanation:

this is the answer

hope this helps

good luck;)

The game of Yahtzee is played with five fair dice. The goal is to roll certain hands', such as Yahtzee (all five dice showing the same number) or a full house (three of a kind and two of a kind). In the first round of a player's turn, the player rolls all five dice. Based on the outcome of that roll, the player has a second and third round, where he/she can then choose to re-roll any subset of the dice to get a desired hand. (a) What is the probability of rolling a Yahtzee on the first round? (b) Suppose that, on the second round, the dice are (2,3, 4,6,6). You decide to re-roll both sixes in the third round. What is the probability that you roll either a small straight or a large straight (a large straight is where all five dice are in a row)?

Answers

a) The probability of rolling a Yahtzee is 0.00077

b) The probability of rolling either a small straight or a large straight is 0.1389

Given data:

(a)

To calculate the probability of rolling a Yahtzee on the first round, we need to determine how many outcomes correspond to a Yahtzee and divide it by the total number of possible outcomes when rolling five dice.

A Yahtzee occurs when all five dice show the same number. There are 6 possible outcomes (each number from 1 to 6), and each outcome has only 1 way of occurring. So, there are 6 ways to roll a Yahtzee.

The total number of possible outcomes when rolling five dice is 6^5 (since each die has 6 sides).

Probability of rolling a Yahtzee = (Number of Yahtzee outcomes) / (Total number of outcomes)

[tex]= \frac{6} {6^5}[/tex]

≈ 0.00077 (rounded to 5 decimal places)

(b)

In the second round, you have (2, 3, 4, 6, 6). In the third round, you choose to re-roll both sixes.

A small straight is when you have four consecutive numbers among the dice (e.g., 1, 2, 3, 4, or 2, 3, 4, 5, or 3, 4, 5, 6).

There are three possible small straights: (2, 3, 4, 5), (3, 4, 5, 6), and (1, 2, 3, 4). Each of these outcomes has only one way of occurring.

A large straight is when all five dice are in a row (e.g., 1, 2, 3, 4, 5 or 2, 3, 4, 5, 6).

There are two possible large straights: (1, 2, 3, 4, 5) and (2, 3, 4, 5, 6). Each of these outcomes has only one way of occurring.

Total favorable outcomes (small straights + large straights) = 3 + 2 = 5

Total number of possible outcomes when re-rolling two dice = 6^2 = 36

Probability of rolling either a small straight or a large straight = (Number of favorable outcomes) / (Total number of outcomes)

[tex]=\frac{5}{36}[/tex]

≈ 0.1389 (rounded to 4 decimal places)

Hence, the probability that you roll either a small straight or a large straight after re-rolling the dice is approximately 0.1389.

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The function f(x) contains the point (4, −10). Show all calculations steps and state the image

(the new location) of point under each of the following general transformations:

a. = ( + 2) − 3

b. − 1 = 2( − 4)

c. − 1/3 = (−2)

d. 2 = ((+2)/3)

Answers

(the new location) of point under each of the following general transformations are as follows:

a. Image: (3, -10)

b. Image: (-1, -10)

c. Image: (-4/3, -10)

d. Image: (14/3, -10)

What is general transformations?

A transformation is a procedure that involves either changing an object's orientation to create an image or expanding or reducing its size to create a new one.

We'll use the given point (4, -10) as the input for each transformation, and apply the transformation to find the new location of the point.

a. f(x) = (x + 2) - 3

f(4) = (4 + 2) - 3 = 3

Therefore, the new location of the point under the transformation f(x) = (x + 2) - 3 is (3, -10).

b. f(x) = 2(x - 4) - 1

f(4) = 2(4 - 4) - 1 = -1

Therefore, the new location of the point under the transformation f(x) = 2(x - 4) - 1 is (-1, -10).

c. f(x) = -1/3x

f(4) = -1/3(4) = -4/3

Therefore, the new location of the point under the transformation f(x) = -1/3x is (-4/3, -10).

d. f(x) = (2/3)x + 2

f(4) = (2/3)(4) + 2 = 8/3 + 2 = 14/3

Therefore, the new location of the point under the transformation f(x) = (2/3)x + 2 is (14/3, -10).

In each case, the image of the point is the new location after applying the transformation.

a. Image: (3, -10)

b. Image: (-1, -10)

c. Image: (-4/3, -10)

d. Image: (14/3, -10)

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#3 Write each in terms of sin x

a) cos²x

b) 3 sin²x - 4 cos²x

Answers

[tex]\boxed{sin^{2}x + cos^{2}x = 1}[/tex]

a) [tex]cos^{2}x = 1 - sin^{2}x[/tex]

b) [tex]3sin^{2}x - 4cos^{2}x = 3sin^{2}x - 4(1 - sin^{2}x) = \\[/tex]

[tex]= 3sin^{2}x - 4 + 4sin^{2}x = 7sin^{2}x - 4[/tex]

What is the standard equation of this ellipse: Vertices: (0,12)
(0,-12) Foci: (0,8) (0,-8). Why do I keep getting
(x^2)/80+(y^2)/144?

Answers

The standard equation of this ellipse is x²/144 + y²/80 = 1.

The standard equation of an ellipse is (x-h)²/a² + (y-k)²/b² = 1, where (h,k) is the center of the ellipse, a is the semi-major axis, and b is the semi-minor axis.

In this case, the center of the ellipse is (0,0) since the vertices and foci are both on the y-axis. The distance between the vertices is 24 (12 - (-12)), so the semi-major axis is 12. The distance between the foci is 16 (8 - (-8)), so the distance between the center and each focus is 8. Using the formula c² = a² - b², where c is the distance between the center and each focus, we can solve for b:

c² = a² - b²
8² = 12² - b²
64 = 144 - b²
b² = 80

So the equation of the ellipse is (x-0)²/12² + (y-0)²/80 = 1, or x²/144 + y²/80 = 1.

You keep getting (x²)/80 + (y²)/144 because you are switching the values of a and b. The semi-major axis should be in the denominator of the x term, and the semi-minor axis should be in the denominator of the y term.

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Pls give simple working

Answers

Answer:

Step-by-step explanation:

f(x)=x^4−x^2+9

a. What is 6%of 34 ? b. 17 is what percent of 34 ? c. 18 is30%of what number? d. What is 7% of 49 ? 8. Copy the number line and fill in the blank so that each tick mark is

Answers

a) 6% of 34 is 2.04
b) 17 is 50% of 34

c) 18 is 30% of 60

d) 7% of 49 is 3.43.

a. To find 6% of 34, you can multiply 34 by 0.06 (which is the decimal equivalent of 6%): 34 * 0.06 = 2.04. So 6% of 34 is 2.04.

b. To find what percent 17 is of 34, you can divide 17 by 34 and then multiply by 100 to convert the decimal to a percentage: (17/34) * 100 = 50%. So 17 is 50% of 34.

c. To find what number 18 is 30% of, you can divide 18 by 0.30 (which is the decimal equivalent of 30%): 18 / 0.30 = 60. So 18 is 30% of 60.

d. To find 7% of 49, you can multiply 49 by 0.07 (which is the decimal equivalent of 7%): 49 * 0.07 = 3.43. So 7% of 49 is 3.43.

8. Unfortunately, I cannot see the number line that you are referring to, so I cannot provide an answer for this part of the question.

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Select each expression that is equivalent to 3/16 if x = 3/4
I need an answer ASAP.
A. 2x+1/16
B.3/4 to the power of 2 - 6/16
D. x-1/4
E 2x-x2-3/4

Answers

Option (b) "3/4 to the power of 2 - 6/16" is the expression that is  equivalent to 3/16.

What are expressions?

A formula is a set of two or more numbers or variables and one or more mathematical operations. This mathematical operation is addition, subtraction, multiplication, or division. The formula has the following structure:

The expression is (number/variable, arithmetic operator, number/variable).

Solution according to the given information:

Given, x = 3/4

Option(a): 2x+1/16 = (2×3/4) +1/16

                              = 3/2 + 1/16

                              =25/16

Which is not equal to 3/16

Option(b): (3/4)² - 6/16 = 9/16 - 6/16 = 3/16

Which is equivalent to 3/16

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A bag with 10 marbles has 3 blue marbles and 7 yellow marbles. A marble is chosen from the bag at random. What is the probability that it is red? Write your answer as a fraction in simplest form

Answers

The probability that the selected marble is red is 0

How to determine the probability that the marble is red?

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

Number of marbles = 10

Blue = 3

Yellow = 7

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

P(Red) = Number of red/Number of marbles

Substitute the known values in the above equation, so, we have the following representation

P(Red) = 0/10

Evaluate

P(Red) = 0

Hence, the probability is 0

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Which angle is formed by EA−→
and EG−→−?
Select all that apply.

Answers

Answer:

Step-by-step explanation:

[tex]\angle 2,\angle AEG, \angle GEB[/tex]

An amusement park charges an admission fee of $40 dollars per person. The cost, C (in dollars), of admission for a group of p people is given by the following function.
What is the cost of admission for a group of 5 people?

Answers

The cost of admission for a group of 5 people is $200 dollars.

The cost of admission for a group of 5 people is given by the function C(p) = 40p, where p is the number of people in the group. To find the cost for a group of 5 people, we simply plug in 5 for p and solve for C:

C(5) = 40(5)
C(5) = 200

Therefore, the cost of admission for a group of 5 people is $200 dollars.

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Select the correct answer. A firework cracker weighing 1.5 kilograms, is launched at 15(m)/(s) by propelling chemicals from combustion at a speed of 55(m)/(s). What is the mass of the chemicals being propelled?

Answers

The mass of the chemicals being propelled is 0.41 kilograms.

The correct answer is: 0.41 kilograms.

To find the mass of the chemicals being propelled, we can use the formula for momentum:

momentum = mass x velocity



Since the momentum of the cracker before it is launched is zero, and the momentum after it is launched is the sum of the momentum of the cracker and the momentum of the chemicals, we can set up an equation:



0 = (1.5 kg)(15 m/s) + (mass of chemicals)(55 m/s)



Next, we can rearrange the equation to solve for the mass of the chemicals:



(mass of chemicals)(55 m/s) = -(1.5 kg)(15 m/s)



mass of chemicals = -(1.5 kg)(15 m/s) / (55 m/s)


mass of chemicals = -22.5 kg / 55 m/s



mass of chemicals = -0.41 kg


So the mass of the chemicals being propelled is 0.41 kilograms.

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Can someone help me write a proof for this

Answers

∆ABC = ∆BCD because they are congruent

What are congruent triangles?

If two sides and the included angle of one triangle are equal to the corresponding sides and angle of another triangle, the triangles are congruent.

AB is parallel to CD and AB is equal to CD,

Therefore AC = BD( opposite sides of a parallelogram are equal

therefore CB is common to both triangle

We can therefore say that all the corresponding three sides of the two triangles are equal

i.e AC = BD

AB = CD

CB = CB

therefore triangle ABC and BCD are congruent

This means ;

∆ABC = ∆BCD

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James created a scale drawing of the school library in his art class. In the scale drawing, the length of the library is 13 inches. The length of the actual library is 78 feet. Which scale did James use to create the scale drawing of the school library?

Answers

The scale unit that James used to create scale drawing of school library is 1 inch = 6 feet.

What is scale unit?

A measurement scale used to represent actual dimensions in a model or drawing. Scales include units of measurement such as inches, feet, and meters, scale unit. A scale used to represent actual dimensions on a drawing or map. 

What is scale drawing?

A scale map is a two-dimensional representation of a real-world object or place. Maps and floor plans are examples of scale drawings. The scale shows what the length on the scale drawing represents in actual length .

According to the question:

Given, 78 feet length of library is represented by 13 inch

Let, "x" be the number of feet that 1 inch represents.

∴ 13x = 78 feet

  ⇒x = 78/13

  ⇒x = 6

So, 1 inch equals 6 feet.

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Answer:

the answer would be 1 inch = 6 feet

Step-by-step explanation:

What is scale unit?

A measurement scale used to represent actual dimensions in a model or drawing. Scales include units of measurement such as inches, feet, and meters, scale unit. A scale used to represent actual dimensions on a drawing or map.

What is scale drawing?

A scale map is a two-dimensional representation of a real-world object or place. Maps and floor plans are examples of scale drawings. The scale shows what the length on the scale drawing represents in actual length .

Solution:

Given, 78 feet length of library is represented by 13 inch

Let, "x" be the number of feet that 1 inch represents.

∴ 13x = 78 feet

 ⇒x = 78/13

 ⇒x = 6

So, 1 inch equals 6 feet.

help please me with the questions:')

Answers

Answer:

1. [tex]75[/tex]

2. [tex]4x^{8}[/tex]

3. [tex]128[/tex]

Step-by-step explanation:

[tex]\frac{3*5^9}{5^7}=\frac{3*5^2*5^7}{5^7}=3*5^2=75[/tex]

[tex]\sqrt{16x^{16}}=4\sqrt{x^{16}} =4x^8[/tex]

[tex]\frac{(-5)(2^8)}{-6+1}/2=\frac{(-5)(2^8)}{(-5)(2)}=\frac{2^8}{2}=2^7=128[/tex]

Hamid wants to find out what people in Melworth think about the sports facilities in the town. Hamid plans to stand outside the Melworth sports centre one Monday morning. He plans to ask people going into the sports centre to complete a questionnaire. Carol tells Hamid that his survey will be biased. Give one reason why the survey will be biased.

Answers

Because it only covers those who are entering the sports centre, the survey will be prejudiced.

Why are surveys biased?

This means that the survey will only reflect the opinions of those who are likely to have positive perceptions of the sports facilities and who are interested in using them. It does not include the viewpoints of those who do not use or hold a poor opinion of the sporting facilities.

Those who don't use the facilities, for instance, could have bad perceptions of the sports centre if it is renowned for being pricey or challenging to get to. The survey will miss important information if it simply polls visitors to the sports centre.

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How long, to the nearest year, will it take an investment to
double if it is continuously compounded at 18% per year?
_______ yr

Answers

It will take 4 years for an investment to double if it is continuously compounded at 18% per year.

The time it takes for an investment to double if it is continuously compounded at 18% per year can be calculated using the formula:
T = ln(2)/r

Where T is the time in years, ln(2) is the natural logarithm of 2, and r is the annual interest rate.

Substituting the given values into the formula, we get:
T = ln(2)/0.18
T ≈ 3.85 years

Therefore, to the nearest year, it will take approximately 4 years for the investment to double if it is continuously compounded at 18% per year.

What is a neperian logarithm?

A neperian logarithm or also known as a natural logarithm, refers to that logarithm that has e as its base, which is worth: 2.718281828.

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Apply Cramer's Rule to solve the system of equations, -- 3.79 +33 = 1 2-12 4.- 3.3 = 0 If it is not possible to use Cramer's rule, indicate that using the checkbox -1 IL 12 It is not possible to use C

Answers

It is not possible to use Cramer's Rule to solve the system of equations you provided. This is because Cramer's Rule can only be applied to systems of linear equations that have the same number of equations as there are unknowns.

In the system you provided, there are four equations but only two unknowns. This means that Cramer's Rule cannot be applied.

Instead, you can use other methods such as substitution or elimination to solve the system. However, it is important to note that with more equations than unknowns, it is possible that there may be no solution or an infinite number of solutions.

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A jug contains 10 different red balls and 7 different black balls. Take out 5 balls without repeating.
(A) What is the probability that at least one red ball will be obtained?
(B) What is the probability that two red balls and three black balls will be obtained? One red and four black?
(C) What is the probability of getting, k , k> = 0, k <= 5, red balls and (k-5) black balls?
.......................................................................................

Answers

A) The probability of at least one red ball being obtained is 1 - the probability of no red balls being obtained.

The probability of no red balls being obtained is (7/17)*(6/16)*(5/15)*(4/14)*(3/13) = 0.0096. Therefore, the probability of at least one red ball being obtained is 1 - 0.0096 = 0.9904.

B) The probability of two red balls and three black balls being obtained is (10/17)*(9/16)*(7/15)*(6/14)*(5/13) = 0.0909. The probability of one red ball and four black balls being obtained is (10/17)*(7/16)*(6/15)*(5/14)*(4/13) = 0.0216.
C) The probability of getting k red balls and (5-k) black balls is (10 choose k)*(7 choose (5-k))/(17 choose 5). This can be calculated for each value of k from 0 to 5 and summed to find the total probability.

For example, when k=0, the probability is (10 choose 0)*(7 choose 5)/(17 choose 5) = 0.0096. When k=1, the probability is (10 choose 1)*(7 choose 4)/(17 choose 5) = 0.0909. The total probability is the sum of these individual probabilities.

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If f(x) = 8x and g(x)= 3x-2, find (fg)(x).

Answers

The function (fg)(x) is the product of the function f(x) and g(x) which is (fg)(x) = 24x² - 16x.

What is a function?

A function is an assertion, concept, or principle that establishes an association between two variables. Functions may be found throughout calculation and are essential for the development of significant links.

The two functions are given below.

f(x) = 8x

g(x)= 3x - 2

The function (fg)(x) is calculated as,

(fg)(x) = f(x) · g(x)

(fg)(x) = (8x) × (3x - 2)

(fg)(x) = 24x² - 16x

The function (fg)(x) is the product of the function f(x) and g(x) which is (fg)(x) = 24x² - 16x.

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The table below gives approximate probabilities for scoring 0, 1, 2, 3, or 4 runs in one inning of Major League Baseball. (Although it is possible to score more than 4 runs in one inning, the probability is very small, so it is ignored in this question.) 3 P(x) | 0 0.74 10.12 20.07 30.04 4 0.03 Round solutions to three decimal places, if necessary. Compute the sum of these probabilities: EP(z) = Compute the mean number of runs per inning, using this probability distribution: Compute the standard deviation of this probability distribution:

Answers

The sum of these probabilities is 1, the mean number of runs per inning is 0.46, and the standard deviation of this probability distribution is 0.839.

The sum of these probabilities is simply the sum of the values in the table:

EP(x) = 0.74 + 0.12 + 0.07 + 0.04 + 0.03 = 1

The mean number of runs per inning can be calculated using the formula for the expected value of a discrete random variable:

E(x) = ∑xP(x) = (0)(0.74) + (1)(0.12) + (2)(0.07) + (3)(0.04) + (4)(0.03) = 0.46

The standard deviation of this probability distribution can be calculated using the formula for the standard deviation of a discrete random variable:

σ = √[∑(x - E(x))^2P(x)]

=> √[(0 - 0.46)^2(0.74) + (1 - 0.46)^2(0.12) + (2 - 0.46)^2(0.07) + (3 - 0.46)^2(0.04) + (4 - 0.46)^2(0.03)]

=> 0.839
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Find the future value of this loan. $17,592 at 6.6% interest for
8 months
The future value of the loan is _______________
​(Round to the nearest cent as​ needed.)

Answers

The future value of the loan is $18,358.16. This means that after 8 months, the loan will have grown to $18,397.54 due to the interest.

To find the future value of this loan, we can use the formula FV = PV(1 + r)^t, where FV is the future value, PV is the present value, r is the interest rate, and t is the time period in years.

In this case, we have PV = $17,592, r = 6.6%, and t = 8 months or 0.667 years (8/12).

Plugging these values into the formula, we get:
FV = $17,592(1 + 0.066)^0.667
FV = $17,592(1.066)^0.667
FV = $18,358.16

Therefore, the future value of the loan is $18,358.16. This means that after 8 months, the loan will have grown to $18,397.54 due to the interest.

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To prepare for his mountain biking trip, Rhyan bought four tire patches. Rhyan paid using a gift card that had $22.20 on it. After the sale, Rhyan’s gift card had $1.90 remaining. Which equations could you use to find the price of one tire patch? Select all that apply. 4x – 1.9 = 22.2 4x – 22.2 = 1.9 4x + 1.9 = 22.2 4x + 22.2 = –1.9 22.2 – 4x = 1.9

Answers

The algebraic equation "4x = 22.2 - 1.9" could be used to find the price of one tire patch.

What is the algebraic equation?

Mathematical equations with one or more variables and algebraic operations like addition, subtraction, multiplication, division, exponentiation, and roots are known as algebraic equations. By identifying the values of the unknown variables that fulfill the equation, these equations can be used to illustrate mathematical connections between variables and to solve issues.

Although algebraic equations can take many different forms, they often require utilizing the equal sign (=) to make one expression equal to another. For instance, the algebraic equation x + 2 = 7 shows the connection between the constants 2 and 7 and the unknown variable x.

The equation that could be used to find the price of one tire patch is:

4x = 22.2 - 1.9

This equation represents the total cost of the four tire patches (4x) subtracted from the initial balance on Rhyan's gift card ($22.20) and the remaining balance after the sale ($1.90).

Simplifying the equation, we get:

4x = 20.3

Dividing both sides by 4, we get:

x = 5.075

So the price of one tire patch is $5.075.

Therefore, the equation "4x = 22.2 - 1.9" could be used to find the price of one tire patch. None of the other equations listed would lead to the correct answer.

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Answer:

yo

Step-by-step explanation:

C and E

6. Name each polyhedron that can be contructed using the following nets: a. b. A Squares c. Regular hexagon and isosceles triangles Square and equilateral triangle

Answers

a. The polyhedron that can be constructed using the net made of squares is a cube.

b. The polyhedron that can be constructed using the net made of squares is also a cube.

c. The polyhedron that can be constructed using the net made of a regular hexagon and isosceles triangles is a hexagonal pyramid.

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Madeline drew a triangle on her paper. Angle A of the triangle was 1/3 as big as angle B. Angle C was smaller than angle A. Which list can represent the angle measures in this triangle? A: 20,40,120 B: 30,60,90 C: 15,45,120 D: 25,40,120

Answers

Answer: A: 20,40,120

Step-by-step explanation:

Angle A is smaller than Angle B as it is less than 1 time as big as it.

The list of angles from smallest to largest is C, A, and B.

120 x (1/3) = 40

20 < 40

Hope this helps!

A cell phone plan charges $45.75 per month, plus $9.55 in taxes, plus $0.35 per
minute for calls beyond the 500-min monthly limit. Write a piecewise defined
function to model the monthly cost C(x) as a function of the number of minutes used
x for the month.

Answers

Answer: We can write the piecewise defined function for the monthly cost C(x) as follows:

C(x) =

45.75 - 9.55, if x ≤ 500

45.75 - 9.55 + 0.35(x - 500), if x > 500

Explanation:

For the first 500 minutes, the monthly cost is a flat rate of $45.75 for the plan fee and $9.55 for taxes, so the total cost is simply the sum of these two amounts: C(x) = 45.75 + 9.55 = 55.30, for x ≤ 500.

For any additional minutes beyond the 500-min limit, there is an additional charge of $0.35 per minute, so the cost increases linearly with the number of extra minutes used. The expression (x - 500) represents the number of minutes beyond the limit, so we multiply this by the rate of $0.35 per minute and add this amount to the base cost of $55.30, giving the piecewise expression:

C(x) =

55.30, if x ≤ 500

55.30 + 0.35(x - 500), if x > 500

Therefore, the piecewise defined function for the monthly cost C(x) is:

C(x) =

45.75 - 9.55, if x ≤ 500

45.75 - 9.55 + 0.35(x - 500), if x > 500

Note: The two expressions are equivalent, but the second expression is simplified by combining the constants.

Step-by-step explanation:

What is the slope of the line that contains the points (2, -8) and (-4, 4)? PLAAA HEELLO MEEEEE

Answers

Answer:

-2

Step-by-step explanation:

[tex]m=\frac{4-(-8)}{-4-2} \\m=\frac{4+(+8)}{-4-2} \\m=\frac{12}{-6} \\m=\frac{2}{-1} \\m=-2[/tex]

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