pls
help and thank you in advance
Let X₁, X2,..., Xn be a random sample (iid) from a Uniform(0,0) distribution defined as (1/0, 0≤x≤0 fx(x) = 0, otherwise where > 0. What is the maximum likelihood estimator of 0?

Answer:

20

Step-by-step explanation:

a c will have the same angle as b d

The velocity of the cylinder when it reaches the bottom of the incline is v = sqrt(4gh/3).

The velocity of the cylinder when it reaches the bottom of the incline can be calculated using the principle of conservation of energy. The velocity of the cylinder is given by the formula v = sqrt(2gh/(1+I/(mr^2))), where g is the acceleration due to gravity, h is the height of the incline, and I is the moment of inertia of the cylinder.

In this case, the cylinder is released from rest at a height h on an incline without slipping, which means that all the potential energy at the top of the incline is converted to kinetic energy at the bottom of the incline. Therefore, we can write:

1/2 mv^2 = mgh

where v is the velocity of the cylinder at the bottom of the incline.

The moment of inertia of the cylinder is given as 1/2mr^2. Substituting this into the formula for v and simplifying, we get:

v = sqrt(2gh/(1+1/2)) = sqrt(4gh/3)

Therefore, the velocity of the cylinder when it reaches the bottom of the incline is v = sqrt(4gh/3).

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Answer:

20

Step-by-step explanation:

10x3=30

5x-2=-10

10x0=0

30-10=20

20 points

What is the first step to be performed when computing Σ(X + 2)2 option d) Sum the (X + 2) values. The first step in computing Σ(X + 2)2 is to perform the operation within the parentheses, which is adding 2 to each score. Once this is done, the resulting values of (X + 2) should be summed.

This is the explanation for the correct answer. Squaring each value (option a) or adding 2 points to each score (option b) are not the correct first steps in this calculation. Summing the squared values (option c) is also not the correct first step as the expression Σ(X + 2)2 requires summing the values before squaring them.

Therefore, the conclusion is that option d) is the correct first step in computing Σ(X + 2)2.

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Answer:

12x - 29 + 4x + 1 = 180

Step-by-step explanation:

(12x - 29) and (4x + 1) are same- side interior angles and sum to 180° , then

12x - 29 + 4x + 1 = 180 ← is the equation to solve for x

16x - 28 = 180 ( add 28 to both sides )

16x = 208 ( divide both sides by 16 )

x = 13

Answer:

∠BIF = 126°

∠JBC = 63°

∠BJD = 117°

Step-by-step explanation:

adjacent angles in a rhombus add up to 180°

∠IBJ and ∠BIF are adjacent angles in a rhombus

thus,

∠IBJ + ∠BIF = 180°

54° + ∠BIF = 180

subtract 54 from both sides to isolate the variable

∠BIF = 126°

a line is 180°

thus, ∠IBA + ∠IBJ + ∠JBC = 180° as those three angles form a line

as the parallelograms are congruent, and we can visually notice that ∠IBA corresponds to angle ∠JBC, we can say that ∠IBA = ∠JBC

thus,

∠IBA + ∠IBJ + ∠JBC = 180°

54° + ∠JBC + ∠JBC = 180°

54° + 2∠JBC = 180

subtract 54 from both sides to isolate the variable and its coefficient

126° = 2∠JBC

divide 2 from both sides to isolate the variable

∠JBC = 63°

adjacent angles in a parallelogram add up to 180°

∠JBC and ∠BJD are adjacent angles in a parallelogram

∠JBC + ∠BJD = 180°

63° + ∠BJD = 180°

subtract 63 from both sides to isolate the variable

∠BJD = 117°

To represent the situation of Ashley and Carly reading a novel, a system of equations can be formed using variables for days (d) and pages (p). The equations are: Ashley's progress - 10d = p and Carly's progress - 8d = p - 40.

Let's denote the number of days as d and the number of pages read as p. For Ashley, she reads 10 pages per day, so her progress can be represented as 10d = p.

For Carly, she starts early and is already on page 40. This means her progress can be represented as 8d = p - 40. Since she starts on page 40, her progress will be p - 40.

Therefore, the system of equations that represents the situation is:

Ashley's progress: 10d = p

Carly's progress: 8d = p - 40

In these equations, the left side represents the progress of each student in terms of days (d), while the right side represents the progress in terms of pages (p) read.

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We are given a table of temperatures that are being maintained at different times in a greenhouse . We are to consider that the temperatures increase at a constant rate and we are asked to create a graph for this.

Answer:

1

Step-by-step explanation:

Answer: 50%

Step-by-step explanation: each side has a 1 in 2 chance of landing on it

=================================================

Explanation:

For this problem, we can make a lattice multiplication diagram. Place the digits of 124 across the top of the lattice multiplication box. Then place the digits along the right hand side of the box. Refer to figure 1 in the diagram below. I've color-coded the alternating bands of diagonals to help be able to add the values we need.

In figure 2, I multiplied all of the outer header single-digit values to get two-digit results. For instance, in the bottom right corner we have 4*3 = 12. Note how the 1 and the 2 of "12" is broken up like you see in figure 2. It's important to separate out the digits like this.

This is because we'll be adding along the diagonal color bands. The 2 in the white triangle in the very bottom right corner is the last digit of the product. This matches with 64086e2 having 2 as the last digit.

Then we add along the diagonal pink color band getting 6+1+2 = 9. This is the digit e. So e = 9 (refer to figure 3). The number 64086e2 updates to 6408692

We could keep going with the lattice process, but I'll stop here and move onto the next section below.

---------------------------------------------

Let m = 6408692

We can do trial and error to determine what d must be equal to. The list of choices we have are {0,1,2,3,4,5,6,7,8,9}

So let's go through those possible values of d

Since d = 6 and e = 9, this means d+e = 6+9 = 15.

C. 1/4 This is a counterexample

Answer:

the 3rd option

Step-by-step explanation:

trust

The required coordinate of point H is given as (d+c, b), as per the given condition.

Coordinate, is represented as the values on the x-axis and y-axis of the graph. while the coordinate x is called abscissa and the coordinate of the y is called ordinate.

Here,
As point H is collinear with point G so the y coordinate of the Point H is equal to y coordinate point G,
So
Y coordinate of point H = b

Now,
x coordinate of point H is given as,
Line GH is parallel with LINE FE
So, x-coordinate = FE = d-(-c) = d+ c

Thus, the required coordinate of point H is given as (d+c, b), as per the given condition.

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In perimeter, The cost to frame Joy's math certificate in a fancy frame is $138.00.

The dimensions of Joy's math certificate are 10 inches tall and 13 inches wide.

Joy wants to frame it in a fancy frame that costs $3.00 per inch.

To determine the total cost of framing the certificate, we need to find its perimeter and then multiply that by the cost per inch.

The perimeter of the certificate is:

Perimeter = 2 × (height + width)

Substituting the given values, we get:

Perimeter = 2 × (10 + 13)Perimeter = 46 inches

Therefore, the total cost of framing Joy's math certificate is:

Total cost = Perimeter × Cost per inch

Total cost = 46 × 3.00Total cost = $138.00

Thus, the cost to frame Joy's math certificate in a fancy frame is $138.00.

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Answer:

48

Step-by-step explanation:

Answer: Her mom is 48 years old.

Step-by-step explanation:

If

12 = 1/4 of x (her mom's age)

12 divided by 1/4

12    x  4                       = 48

1            1

x = 48

Answer:

  (c)  (15, -30)

Step-by-step explanation:

A proportional relationship has the equation ...

  y = kx

The value of the constant of proportionality is the ratio of y to x:

  k = y/x = 40/-20 = -2

__

The point that is on the line y = -2x is the point (15, -30).

The total surface area of the trapezoidal prism is S = 3,296 inches²

Given data ,

Let the total surface area of the trapezoidal prism is S

Now , the measures of the sides of the prism are

Side a = 10 inches

Side b = 32 inches

Side c = 10 inches

Side d = 20 inches

Length l = 40 inches

Height h = 8 inches

Lateral area of prism L = l ( a + b + c + d )

L = 40 ( 10 + 32 + 10 + 20 )

L = 2,880 inches²

Surface area S = h ( b + d ) + L

On simplifying the equation , we get

S = 2,880 inches² + 8 ( 52 )

S = 3,296 inches²

Hence , the surface area of prism is S = 3,296 inches²

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The p-value is greater than the significance level of 0.05, we fail to reject the null hypothesis that the news is read equally for both age groups.

To test whether the proportion of individuals who read newspapers to find out the news is the same for both age groups, we can use a hypothesis test for two proportions. Let p1 be the true proportion of individuals who read newspapers in the age group 36-50, and let p2 be the true proportion of individuals who read newspapers in the age group over 50.

The null hypothesis is that the proportions are equal, i.e., H0: p1 = p2. The alternative hypothesis is that the proportions are not equal, i.e., Ha: p1 ≠ p2.

We can use a significance level of 5%, which means that we will reject the null hypothesis if the p-value is less than 0.05.

To conduct the test, we can calculate the sample proportions of individuals who read newspapers in each age group:

p-hat1 = 25/50 = 0.5

p-hat2 = 30/50 = 0.6

We can also calculate the pooled proportion, which is the weighted average of the two sample proportions:

p-hatp = (25 + 30) / (50 + 50) = 0.55

Using the sample proportions and the pooled proportion, we can calculate the test statistic:

z = (p-hat1 - p-hat2) / √(p-hatp × (1 - p-hatp) × (1/50 + 1/50))

= (0.5 - 0.6) / √(0.55 × 0.45 × (1/50 + 1/50))

= -1.52

The p-value for this test is the probability of getting a test statistic as extreme or more extreme than the observed value of -1.52, assuming the null hypothesis is true. Since this is a two-tailed test, we need to calculate the probability of getting a z-score less than -1.52 or greater than 1.52.

Using a standard normal table or a calculator with a normal distribution function, we can find the p-value:

p-value = P(Z ≤ -1.52) + P(Z ≥ 1.52) ≈ 0.129

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Answer:

15%

Step-by-step explanation:

24/160 = 0.15

0.15*100 = 15

Answer:

I believe the answer is 8.16 pardon me if it's wrong.

Answer:

8.18

Step-by-step explanation:

First, note that 8.175 has two parts. The integer part to the left of the decimal point and the fractional part to the right of the decimal point:

Integer Part: 8

Fractional Part: 175

To round 8.175 to the nearest hundredth means to round the numbers so you only have two digits in the fractional part.

We use the following rules to round 8.175 to the nearest hundredth:

A) If the last digit in the fractional part of 8.175 is less than 5, then simply remove the last the digit of the fractional part.

B) If the last digit in the fractional part of 8.175 is 5 or more and the second digit in the fractional part is less than 9, then add 1 to the second digit of the fractional part and remove the third digit.

C) If the last digit in the fractional part of 8.175 is 5 or more and the second digit in the fractional part is 9, and the first digit in the fractional part is less than 9, then add 1 to the first digit in fractional part and make the second digit in fractional part 0. Then remove the third digit.

D) If the last digit in the fractional part of 8.175 is 5 or more and the second digit in the fractional part is 9, and the first digit in the fractional part is 9, then add 1 to the integer part and make the fractional part 00.

With 8.175, rule B applies and 8.175 rounded to the nearest hundredth is:

8.18

Answer:

12

Step-by-step explanation:

Finding the 'value' means we need to calculate a number answer.

1/8 (x^3 - 4) (t^2 + 8)

Fill in 2 for x and 4 for t.

=1/8(2^3 - 4)(4^2 + 8)

inside of parenthesis we'll work on exponents first.

= 1/8 (8 - 4) (16 + 8)

Still inside of parenthesis, do the subtracting or adding next.

= 1/8 (4) (24)

This is all multiplying.

= 12

Answer:

\(-3x^3-2x+27 \ is\ the\ standard\ form.\)

Step-by-step explanation:

The standard form of a polynomial is its representation in a descending order starting from the term with the highest degree to the one with the lowest.

Here,\(-3x^3-2x+27 \ is\ the\ standard\ form.\)

Answer:

Step-by-step explanation:

Look at 3%2At%2B7=%28+-8+%29.

Moved these terms to the left  %28 +8+ %29

It becomes 3%2At%2B7%2B _green%28+8+%29=0.

Look at 3%2At%2B_red%28+7+%29%2_red%28+8+%29=0.

Added fractions or integers together

It becomes 3%2At% 2B % 28+15+%29=0.

Look at highlight_red%28+3%2At%2B15+%29=0.

Solved linear equation %28+3%2At%2B15=0+%29 equivalent to 3*t+15 =0

It becomes highlight_green%28+0+%29=0.

Result: 0=0

This is an equation! Solutions: t=-5.

Answer: t= -1/3

Step-by-step explanation:

3t+7=-8

subtract 7 from 7 and 8 (this cancels out the 7)

left with 3t = -1

divide 3 into 3t and -1

the 3 in 3t is canceled out, leaving us with t, therefore t= -1/3

The correct option is c.Keep going.

Create a regression model and be able to optimize it, it is much better that all factors are on a scale. The answer is option c.Keep going.Regression analysis is an important statistical method that is commonly used in finance and other fields for prediction purposes. It is useful for finding the relationships between one dependent variable and one or more independent variables. In order to create an efficient regression model, the variables should be measured on a scale. Therefore, it is important to measure variables on a scale, as this makes it easier to create a regression model. If variables are categorical or binary, it becomes difficult to measure their relationship with the dependent variable using regression models as they are not measurable on a scale. This is why it is much better that all factors are on a scale while creating a regression model and optimizing it. Thus, the correct option is c.Keep going.

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The number √3 has a result less than 2 and greater than 1. We know this because the square of 2 is 4, that is √4 = 2 and √2 is less than 2 itself.

Hence, the number √3 lies between √2 and √4.

More precisely, it lies between 1 and 2 (the result of √3 is 1.732)

√

To determine the probability of getting three aces from a deck of 52 cards where 3 cards are dealt at once with no replacement, we can use the formula for conditional probability.

In this case, we want to determine the probability of getting 3 aces given that the first card drawn is an ace, then the probability of the second card is an ace given that the first was an ace, and so on.

The probability of getting 3 Aces when dealing 3 cards at once from a deck of 52 cards is 1/13,261.

To calculate this, we first need to understand the probability of drawing an Ace from the deck. There is 1 Ace in every 4 cards, so the probability of drawing an Ace is 1/4.

Next, we need to calculate the probability of drawing three Aces out of the 52 cards in the deck. This can be calculated by multiplying the probabilities of drawing each individual Ace:
1/4 x 1/4 x 1/4 = 1/64

Finally, to calculate the probability of drawing 3 Aces from the deck, we need to calculate the total number of ways that this can happen. This is done by calculating the number of combinations in a deck of 52 cards with 3 draws. The answer is 13,261, so the probability of getting 3 Aces when dealing 3 cards at once from a deck of 52 cards is 1/13,261.

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Answer:

D. $150 in 4%, $850 in 6%

Step-by-step explanation:

1. The amount available to invest in the accounts, A = $1,000

The amount of average interest rate needed = 5.7 percent = 0.057

The interest paid by one of the accounts, account 1, I₁ = 4 percent = 0.04

The interest paid by the other account, account 2, I₂ = 6 percent = 0.06

Let 'x' represent the amount invested in account 1 that pays 4% and let 'y' represent the amount invested in account 2, that pays 6% we get;

x + y = 1,000...(1)

0.04·x + 0.06·y = 0.057 × 1,000 = 57

∴ 0.04·x + 0.06·y = 57...(2)

Making 'y' the subject of equation (1) and (2), we have;

For equation (1), y = 1,000 - x...(3)

For equation (2), y = 950 - (2/3)·x...(4)

Subtract equation (4) from equation (3) gives;

y - y = 1,000 - x - (950 - (2/3)·x)

0 = 1,000 - 950 - x + (2/3)·x

0 = 50 - (1/3)·x

(1/3)·x = 50

x = 3 × 50 = 150

x = 150

The amount invested in the 4% account, x = $150

From equation (3), we have;

y = 1,000 - x

∴ y = 1,000 - 150 = 850

y = 850

The amount invested in the 6% account, y = $850.

Therefore;

$150 should be invested in the account that pays 4% while $850 should be invested in the account that pays 6%.

Answer:

$150 in 4%, $850 in 6%

Step-by-step explanation:

just took the test!