URGENT PLS ANSWER IM STRUGGLING !!

Answer:

y = -½x + 4

Step-by-step explanation:

Equation of any line in slope-intercept form is y = mx + b, where,

m = slope = change in y/change in x

b = y-intercept = the point on the y-axis intercepted by the line.

Let's find m and b.

✔️Using two points on the line, (0, 4) and (2, 3),

Slope (m) = change in y/change in x = (3 - 4)/(2 - 0)

m = -1/2 = -½

✔️The line intercepts the y-axis at y = 4.

Therefore,

b = 4

✔️To write the equation of the line, substitute m = -½ and b = 4 into y = mx + b.

Thus,

y = -½x + 4

The expected value of the random variable X is 1.4.

we can use the formula:

E(X) = Σ [xi * P(xi)], where xi is the possible values of the random variable and P(xi) is the corresponding probabilities.

Given that the random variable has a probability of 0.2 for a certain value and 0.8 for another value, we can write:

E(X) = (0.2 * x1) + (0.8 * x2)

where x1 is the value with probability 0.2 and x2 is the value with probability 0.8.

Without knowing the specific values of x1 and x2, we cannot compute the exact expected value. However, we can simplify the expression as:

E(X) = 0.2x1 + 0.8x2

= 0.2(x1) + 0.8(x2)

= 0.2(E(X) - 1) + 0.8(E(X) + 2)

where we have used the fact that x1 = E(X) - 1 and x2 = E(X) + 2 (since there are only two possible values for the random variable).

Solving this equation for E(X), we get:

E(X) = 1.4

Therefore, the expected value of the random variable X is 1.4.

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(Lesson 2.7: Great Expectations.) Suppose that is a discrete random variable having with probability 0.2, and with probability 0.8. Find . 1 ptsQuestion 5 a. 3 (Lesson 2.7: Great Expectations.) Suppose that is a discrete random variable having with probability 0.2, and with probability 0.8. Find  expected value of the random variable,

Answer:

3

Step-by-step explanation:

3x22.75=68.25 or less than the yearly pass

Answer: 137 degrees

Step-by-step explanation:

It's in the sentences, the angle is 137 degrees

Answer:

x=−5 and y=−7

Step-by-step explanation:

Step: Solve y=2x+3for y:

y=2x+3

Step: Substitute2x+3foryin4x−3y=1:

4x−3y=1

4x−3(2x+3)=1

−2x−9=1(Simplify both sides of the equation)

−2x−9+9=1+9(Add 9 to both sides)

−2x=10

−2x

−2

=

10

−2

(Divide both sides by -2)

x=−5

Step: Substitute−5forxiny=2x+3:

y=2x+3

y=(2)(−5)+3

y=−7(Simplify both sides of the equation)

Using the midpoint method, the price elasticity of demand is approximately -0.67.

To calculate the price elasticity of demand using the midpoint method, we'll use the following formula:

Price Elasticity of Demand (Ed) = (% change in quantity demanded) / (% change in price)

First, let's find the percentage changes:

% change in quantity demanded = ((New Quantity Demanded - Old Quantity Demanded) / Midpoint of Quantities) * 100
= ((80 - 100) / ((100 + 80) / 2)) * 100
= (-20 / 90) * 100
= -22.22%

% change in price = ((New Price - Old Price) / Midpoint of Prices) * 100
= ((7 - 5) / ((5 + 7) / 2)) * 100
= (2 / 6) * 100
= 33.33%

Now, let's plug the values into the formula:

Ed = (-22.22% / 33.33%)
= -0.67

So, the price elasticity of demand is approximately -0.67.

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Answer:

Statement 2 is a lie

Step-by-step explanation:

Statement 1 = TRUE

\(13^{2} * 13^{x} = 13^{6} \\13^{2+x} =13^{6}\\2 + x = 6\\x = 6 - 2\\x = 4\)

x = 4 is True

Statement 3 = TRUE

\(5^{y} * 5^{6} =5^{12} \\5^{y+6} = 5^{12} \\y+6 = 12\\y=12 -6\\y =6\)

y = 6 is True

Statement 2 =  LIE

\(m^{y} *m^{z} = m^{x} \\m^{6} *m^{z} = m^{4}\\m^{6+z} = m^{4}\\6 + z = 4\\z= 4-6\\z= -2\)

z = -2 is Lie

Answer:

  x ≤ 1

Step-by-step explanation:

For f(x) = √(1 -x), the function is defined where the square root is defined:

  1 -x ≥ 0

  1 ≥ x . . . . . add x

The domain is x ≤ 1.

Answer:

The answer is 70

Step-by-step explanation:

First, you do parentheses, 15-4, which is 11. According to PEMDAS, multiplication comes before addition so you do 11 x 6, which is 66. Finally, add 4 to 66, and you get the answer of 70.

Answer:

y=3

Step-by-step explanation:

it is because X=-2 had crossed the point y=3

hope this help you!!!! ;))))))

Answer:

10

Step-by-step explanation:

5000 / 500 = 10

How to do this?

First find out what your solving for then if its like this get the sum then divide it

if its like this - 10 x 10 = A just do 10 x 10

and if its A x 10 = 100 just divide 100 and 10 easy and simple!

Contact me:

Need help? add me on discord reseller#0001

Also feed back is a good thing so let me know how I did

If I helped please give a brainliest!

A mathematical operation that is easily performed but highly unlikely to reverse in a reasonable amount of time is known as a "one-way function." One-way functions are fundamental to cryptography, particularly in areas like secure hashing and public-key encryption. These functions are designed to be simple and efficient to compute in one direction but extremely difficult and time-consuming to reverse.

A prime example of a one-way function is the multiplication of two large prime numbers. Multiplying them is a straightforward task, but attempting to factorize the product back into its original primes, known as the "prime factorization problem," is considered computationally infeasible for large numbers. This asymmetry in complexity is utilized in cryptographic systems, such as the RSA encryption algorithm, to ensure the security of sensitive information.

In summary, one-way functions are mathematical operations that can be easily performed but are highly challenging to reverse. Their properties make them invaluable in the realm of cryptography, where they provide the foundation for secure communication and data protection.

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Maximum two hours of gaming a day is healthy.

What is meaning of healthy?

Not just the absence of illness or infirmity, but also a complete condition of physical, mental, and social well-being, is what is meant by "health."

Additionally, twice as many parents of teen boys than teen girls report that their son plays video games daily. Teenage guys are also more likely to play video games for three or more hours.

The American Academy of Pediatrics advises limiting screen-based entertainment to no more than two hours each day. According to Radesky, parents should make a "media plan" that specifies how much time a kid can spend playing video games without having an impact on their behavior or their schoolwork.

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Step 1

Use the law that the sum of angles on a straight line is 180° to find y given that x = 42°

Step 2

Using the law

x + y = 180°

After substitution

42 + y = 180

y = 180 - 42

y =138°

There are 5040 possible combination of 7 letter words using 3 vowels and 4 consonants.

We know that the word must have 4 consonants and 3 vowels. We have the following vowels in "mathisfun" : i, a, and u.

We have 7 letters that can be used as consonants: m,t,h,s,f,n.

First we need to find the number of ways to choose the 4 consonants out of 7 possible letters, which is 7C4 = 35.

Then we need to find the number of ways to arrange the 4 consonants and 3 vowels, which is 4!*3! = 144

Finally, we multiply those two values together: 35 * 144 = 5040.

So there are 5040 7 letter words that can be made from "mathisfun" if each word must have 4 consonants and 3 vowels.

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The mathematical symbol ∑∑ is used to represent a double summation. It is a way of expressing the sum of two series of numbers.

Double summation is a way of expressing the sum of two series of numbers, written as ∑∑. The upper sigma symbol represents the outer summation, while the lower sigma symbol represents the inner summation. The two series of numbers that form the double summation can be related or unrelated.

The double summation is written in the following form: ∑∑ aij, where aij is an element from the two series of numbers, i and j are the upper and lower limits of the double summation, respectively.

This type of expression is used to find the sum of a set of numbers that are related to each other in some way, such as the sum of the elements in a matrix or a table, or the sum of two series of numbers that are not related. The double summation is a useful tool for expressing the sum of two series of numbers and is widely used in mathematics and science.

Complete answer:

What does ∑∑ mean?

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The function which represents the cost to drive a car from this agency miles x a day is :

C(x) = 15, if 0 ≤ x ≤ 200

      = 15 + 0.05x, if x > 200

Given that,

A car rental agency charges $15 a day for driving a car 200 miles or less.

The function can be written as,

C(x) = 15 if 0 ≤ x ≤ 200

If a car is driven over 200 miles, the renter must pay $0.05 for each mile over 200 driven.

C(x) = 15 + 0.05x, if x > 200

Hence the correct option is D.

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Answer:

The average GPA would be 1.8

Step-by-step explanation:

Hope this is helpful. I did a test like this exact question and I got it right.

the length of the arc of the function\(\(y = \sqrt{x}\)\) from\(\(x = 1\) to \(x = 9\)\)is approximately 8.27 units.

To find the length of the arc of the function\(\(y = \sqrt{x}\)\) from\(\(x = 1\)\) to \(\(x = 9\),\) we can use the arc length formula:

\(\[L = \int_{x_1}^{x_2} \sqrt{1 + \left(\frac{dy}{dx}\right)^2} \, dx\]\)

First, let's find\(\(\frac{dy}{dx}\)\)by differentiating\(\(y = \sqrt{x}\)\)with respect to\(\(x\)\):

\(\[\frac{dy}{dx} = \frac{1}{2\sqrt{x}}\]\)

Now we can substitute this into the arc length formula:

\(\[L = \int_{1}^{9} \sqrt{1 + \left(\frac{1}{2\sqrt{x}}\right)^2} \, dx\]\)

Simplifying the expression inside the square root:

\(\[L = \int_{1}^{9} \sqrt{1 + \frac{1}{4x}} \, dx\]\)

To solve this integral, we can make a substitution by letting\(\(u = 1 + \frac{1}{4x}\).\)Taking the derivative of\(\(u\)\)with respect to \(\(x\)\), we have \(\(du = -\frac{1}{4x^2} \, dx\).\)Rearranging, we get \(\(-4x^2 \, du = dx\).\)

Substituting these values into the integral:

\(\[L = \int_{1}^{9} \sqrt{u} \cdot (-4x^2 \, du) = -4 \int_{u_1}^{u_2} \sqrt{u} \, du\]\)

The limits of integration,\(\(u_1\)\) and\(\(u_2\),\)can be determined by substituting \(\(x = 1\)\)and\(\(x = 9\)\)into the expression for \(u\):

\(\(u_1 = 1 + \frac{1}{4(1)} = \frac{5}{4}\)\(u_2 = 1 + \frac{1}{4(9)} = \frac{37}{36}\)\)

Now we can evaluate the integral:

\(\[L = -4 \int_{5/4}^{37/36} \sqrt{u} \, du\]\)

This integral can be solved using the power rule for integration:

\(\[L = -4 \left[\frac{2}{3}u^{3/2}\right]_{5/4}^{37/36}\]\)

Simplifying further:

\(\[L = -4 \left(\frac{2}{3}\right) \left[\left(\frac{37}{36}\right)^{3/2} - \left(\frac{5}{4}\right)^{3/2}\right]\]\)

Evaluating this expression, we find:

\(\[L \approx 8.27\]\)

Therefore, the length of the arc of the function\(\(y = \sqrt{x}\)\) from\(\(x = 1\) to \(x = 9\)\)is approximately 8.27 units.

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The probability that a randomly selected person from the survey prefers bacon would be 60% in this example. However, without knowing the specific numbers, we cannot calculate the probability accurately.

To determine the probability that a randomly selected person from the survey prefers bacon, we need additional information such as the total number of respondents in the survey and the number of people who prefer bacon. Without this information, it is not possible to calculate the exact probability.

The probability can be calculated by dividing the number of people who prefer bacon by the total number of respondents in the survey. If the survey provides these specific numbers, we can use the formula:

Probability = Number of people who prefer bacon / Total number of respondents

For example, if the survey includes 100 respondents and 60 of them prefer bacon, the probability would be:

Probability = 60 / 100 = 0.6 or 60%

Therefore, the probability that a randomly selected person from the survey prefers bacon would be 60% in this example. However, without knowing the specific numbers, we cannot calculate the probability accurately.

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Answer:

x=\(\frac{695}{251}\)

or

x= 2\(\frac{193}{251}\)

Step-by-step explanation:

Answer:

A linear equation

Step-by-step explanation:

It just is

Answer:

Step-by-step explanation:

2x + -1y = -42

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'y' to each side of the equation.

2x + -1y + y = -42 + y

Combine like terms: -1y + y = 0

2x + 0 = -42 + y

2x = -42 + y

Divide each side by '2'.

x = -21 + 0.5y

Simplifying

x = -21 + 0.5y

hope helps you

Answer:

33

Step-by-step explanation:

18 + 15 ← factor out 3 ( the GCF ) from each term

= 3(6 + 5)

= 3(11)

= 3 × 11

= 33

Answer:

-7

Step-by-step explanation:

PEMDAS

To follow PEMDAS we do division first:

96/8 = 12 so now we have 13 - 12 + 8

Next we do Addition:

13 - 20

Finally subtraction:

-7

Answer:

The value is 9

Step-by-step explanation:

PEMDAS is an order of operations, Parentheses ( ), Exponent \(x^{2} \), Multiplication ×, Division ÷, Addition +, and Subtraction -.

13 - 96 ÷ 8 + 8

As you can see in the problem, there are no PEM (Parentheses, Exponent, and Multiplication) so know you only have DAS (Division, Addition, and Subtraction) which is simple.

13 - 96 ÷ 8 + 8

96 ÷ 8 = 12

13 - 12 + 8 = 9

Edit: I also used a calculator to make sure and got 9  

Anyways, hope I helped and sorry if it's wrong

Answer:

12/16=3/4

Step-by-step explanation:

Answer:

X-intercept: -15

Y-intercept: 6

Step-by-step explanation:

The x-intercept of a graph is the x-coordinate of the graph when it crosses the x-axis, that is, when y=0. So to find the x-intercept given the equation for a graph, we find x when y=0:

-2x+5y=30

-2x+5(0)=30

-2x=30

x=-15

Similarly, the y-intercept of a graph is the y-coordinate of the graph when it crosses the y-axis, that is, when x=0. So to find the y-intercept given the equation for a graph, we find y when x=0:

-2x+5y=30

-2(0)+5y=30

5y=30

y=6

Answer:

This graph shows a function because no vertical line passes through more than one point on the graph.

Step-by-step explanation:

The value that is 2 standard deviations from the mean can be calculated as follows:

2 standard deviations = 2 x 15 = 30

So, the value that is 2 standard deviations from the mean is either 30 points below the mean or 30 points above the mean.

Mean - 30 = 100 - 30 = 70

Mean + 30 = 100 + 30 = 130

Therefore, the value that is 2 standard deviations from the mean is either 70 or 130.

The correct answer is d. 70 or b. 130, depending on whether you are looking for the value that is 2 standard deviations below or above the mean.

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