Consider this expression.
√a³ - 7+|b|
When a = 2 and b =
-4, the value of the expression is

Answer:

-61

Step-by-step explanation:

Order of Operations: BPEMDAS

Step 1: Write expression

-18/-6 + 8 × - 8

Step 2: Divide

3 + 8 × -8

Step 3: Multiply

3 - 64

Step 4: Subtract

-61

Answer:

If instructed to simplify the question, your answer is -5+8x.

Step-by-step explanation:

-18 divided by -6 equals positive 3.

3 + 8x -8 would become -5+8x, because 3 minus 8 is -5. Hope this helps!

Answer:

\(\frac{1}{12}\)

Step-by-step explanation:

A full circle consists of 360°, so we can write the fraction of this arc as \(\frac{30}{360}\), which can be simplified to \(\frac{1}{12}\) by dividing the numerator and denominator by 30.

**This content involves simplifying fractions and knowledge on the angle sum of a circle which you may wish to revise. I'm always happy to help!

The random variable x is uniformly distributed between 5 and 19. To compute the standard deviation of x, we can use the formula for the standard deviation of a uniformly distributed continuous random variable:

SD = √[(b - a)^2 / 12]
Here, 'a' represents the lower bound (5) and 'b' represents the upper bound (19). Plugging these values into the formula, we get:
SD = √[(19 - 5)^2 / 12]
SD = √[(14)^2 / 12]
SD = √[196 / 12]
SD = √[16.333]
Therefore, the standard deviation of x is approximately 4.041. The correct answer is option (a) 4.041.

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The MLE of σ² is a biased estimator of σ²

The maximum likelihood estimator (MLE) of σ² is a biased estimator, we need to demonstrate that its expected value is different from the true population variance, σ².

Let's start with the definition of the MLE of σ². In the context of simple linear regression, the MLE of σ² is given by:

MLE(σ²) = SSE/n

where SSE represents the sum of squared errors and n is the number of observations.

The expected value of the MLE, we need to take the average of all possible values of MLE(σ²) over different samples.

E(MLE(σ²)) = E(SSE/n)

Since the expectation operator is linear, we can rewrite this as:

E(MLE(σ²)) = 1/n × E(SSE)

Now, let's consider the expected value of the sum of squared errors, E(SSE). In simple linear regression, it can be shown that:

E(SSE) = (n - k)σ²

where k is the number of predictors (including the intercept) in the regression model.

Substituting this result back into the expression for E(MLE(σ^2)), we get:

E(MLE(σ²)) = 1/n × E(SSE)

= 1/n × (n - k)σ²

= (n - k)/n × σ²

Since (n - k) is less than n, we can see that E(MLE(σ²)) is biased and different from the true population variance, σ².

Therefore, we have shown that the MLE of σ² is a biased estimator of σ².

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The question is incomplete the complete question is :

Show that σ² = SSE/n, the maximum likelihood estimator of σ² is a biased estimator of σ²?

Answer:

x=574

Step-by-step explanation:

it says that on my caculater.

His/her lowered score was most likely due to statistical regression.

The missing options in the question are:

A. compensation rivalry  B. Demoralization C.  Differential selection

D.  Testing E.  Statistical regression

From the question, we have:

A change (whether higher or lower) in the score is caused by statistical regression.

This is so because several variables could attribute to the change in the score.

The relationship between these variables is referred to as statistical regression

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Answer:

5 times 2

Step-by-step explanation:

Answer:

10 divided by 2

Step-by-step explanation:

There is ten circles and there's two sets of them. Each set has 5 circles meaning all you're doing is 10 divided by 2.

Based on the information given in the table, the discrete quantitative variable would be the number of hotels.

This refers to a variable in a distribution that can only take on a specific value that is countable.

This means that the number does not go on forever. Examples of these are the number of fingers and toes you have.

The discrete quantitative variable from the options would therefore be the number of hotels that there are.

________________________________________________________

The rest of the question is:

Which of the variables is a discrete quantitative variable?

A:average temperature

B:number of hotels

C:beach access

D:location

________________________________________________________

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Answer:

...............

Step-by-step explanation:

...............

Answer:

y = 15x

Step-by-step explanation:

Answer:

72 units

its math really

Answer:

Δ ABC and Δ DEF are similar because their corresponding sides are proportional

Step-by-step explanation:

Two triangles are similar if their corresponding sides are proportional which means the corresponding sides have equal ratios

In the two triangles ABC and DEF

∵ AB = 4 units

∵ DE = 2 units

∴ \(\frac{AB}{DE}=\frac{4}{2}=2\)

∵ BC = 6 units

∵ EF = 3 units

∴ \(\frac{BC}{EF}=\frac{6}{3}=2\)

∵ CA = 2 units

∵ FD = 1 units

∴ \(\frac{CA}{FD}=\frac{2}{1}=2\)

∴ \(\frac{AB}{DE}=\frac{BC}{EF}=\frac{CA}{FD}=2\)

∵ All the ratios of the corresponding sides are equal

∴ The corresponding sides of the two triangles are proportional

∴ Δ ABC is similar to Δ DEF

Answer:

Step-by-step explanation:

(-2, 8)

(-1, 6)

(0, 4)

(1, 2)

(2,0)

to "show work" just plug in each x value into that equation. you will never learn if all you do is copy down answers. i have given you all of the correct answers, and all you need to do is plug in the values for each x value into the equation, multiply then add. good luck man.

The number of sandwiches that can made with 6 pieces of bread and 4 slices of cheese by the picture to the right is 2 sandwich

The limiting reactant is the one that limits the amount of product that will be formed, causing a specific concentration.

The formula for making a sandwich according to the picture to the left (A) is:

2 pieces of bread + 1 cheese = 1 sandwich

So, if we have 6 pieces of bread and 4 slices of cheese we get:

6 pieces of bread * 1 sandwich/ 2 pieces of bread = 3 sandwich

4 slices of cheese * 1 sandwich/ 1 cheese = 4 sandwich

Thus, bread is the limiting reactant, we have: 3 sandwich

The formula for making a sandwich according to picture to the right (B) is:

2 pieces of bread + 2 cheese = 1 sandwich

So, if we have 6 pieces of bread and 4 slices of cheese we get:

6 pieces of bread * 1 sandwich/ 2 pieces of bread = 3 sandwich

4 slices of cheese * 1 sandwich/ 2 cheese = 2 sandwich

Now the cheese is the limiting reactant, so we have:  2 sandwich

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The zeros of the function f(x) = 1/2cos(2x) in the interval (-2π, 2π) are: x = π/4, 3π/4.

To find the zeros of the function f(x) = 1/2cos(2x) in the interval (-2π, 2π), we need to solve the equation f(x) = 0.

We know that the cosine function has zeros at x = π/2, 3π/2, 5π/2, etc. So we need to find all values of x in the interval (-2π, 2π) that satisfy the equation cos(2x) = 0.

Using the double angle formula for cosine, we have:

cos(2x) = 2cos²(x) - 1 = 0

Solving for cos(x), we get:

cos(x) = ±sqrt(1/2)

So the solutions for cos(2x) = 0 are:

x = π/4, 3π/4, 5π/4, 7π/4

However, we need to check which of these solutions are within the interval (-2π, 2π).

Since π/4 and 3π/4 are both between -2π and 2π, they are valid solutions. But 5π/4 and 7π/4 are not within the interval, so we can discard them.

Therefore, the zeros of the function f(x) = 1/2cos(2x) in the interval (-2π, 2π) are: x = π/4, 3π/4.

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Answer:

$4+$1.50m so $4+1.50*5= $11.50

Answer:

1 square unit

Step-by-step explanation:

Plug in s = 1/4 into the formula.

A = 16(1/4)^2

= 16(1/16) (since 4^2=16)

= 1 (cancel out the 16s)

The mean height of the students in the group is 51 inches.

To find the mean height of the students in the group, you need to follow these steps:

1. Add up the heights of all students: 49 (A) + 48 (B) + 53 (C) + 54 (D) + 51 (E) = 255 inches.
2. Count the total number of students: There are 5 students in the group.
3. Divide the total height by the number of students: 255 inches ÷ 5 students = 51 inches.

The mean height of the students in the group is 51 inches.

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simplify - maths to reduce (an equation, fraction, etc) to a simpler form by cancellation of common factors, regrouping of terms in the same variable, etc.

______________

______________

\(\huge\red{\mid{\underline{\overline{\textbf{EQUATION}}}\mid}}\)

\(5+3 (5) + (-4) (5)\)

Follow our PEMDAS rule

\(5+3 (5) + (-4) (5)\\5+15-4\cdot5\\5+15-20\\20-20\\0\)

\(\huge\red{\mid{\underline{\overline{\textbf{ANSWER}}}\mid}}\)

\(5+3 (5) + (-4) (5)\:\:\:\:simplified\:=0\)

Yes, there exist infinitely many surfaces that contain the given curve,\(`r(t) = t^2 i + ln(t) j + 1 tk`.\)

Given that \(`r(t) = t^2 i + ln(t) j + 1 tk`\).In order to find the surfaces that contain the curve, we can solve for 't' and get three equations, each missing one of the three variables, giving three equations for surfaces that contain the curve.

They are,\(x = t^2 (y = ln(t) and z = 1/t),\)

\(y = ln(t) (x = t^2 and z = 1/t)\)

\(z = 1/t (x = t^2 and y = ln(t)).\)

These three equations represent the surfaces that contain the curve. But, as you mentioned, there are infinitely many surfaces that contain the curve. This is because we can translate the surface infinitely many times and still have the curve lie on the surface.

For example, the surfaces of the form,x = t^2 + a,

y = ln(t) + b and

z = 1/t + c (a, b, c are constants) also contain the curve.

Hence, there exist infinitely many surfaces that contain the given curve, `r(t) = t^2 i + ln(t) j + 1 tk`.

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The equation of the circle centered at (−5, 8) and having a radius of 7 is (x + 5)² + (y - 8)² = 49.

The standard form of the equation of a circle is expressed as;

x² + y² = r²

The horizontal (h) and vertical (k) translations represents the center of the circle.

Hence;

(x - h)² + (y - k)² = r²

Given the data in the question;

Center of the circle: (−5, 8)

Now, plug the values of h, k and r into the equation above and simplify,

(x - h)² + (y - k)² = r²

( x - (-5) )² + ( y - 8 )² = 7²

(x + 5)² + (y - 8)² = 49

Therefore, the equation of the circle is (x + 5)² + (y - 8)² = 49.

Hence, option A is the correct answer.

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Answer:

0.75x=(total cost)

Step-by-step explanation:

Answer:

The independent variable, x, represents the number of bagels purchased, and the dependent variable is the total cost of the bagels, because the total cost of the bagels depends on the number of bagels purchased.

A function relating these variables is A(x) =0.75x .

So A(12) = 9, meaning 12 bagels will cost 9 dollars.

Step-by-step explanation:

Please give me THANKS and BRAINLIES

Have a good day

The answer to part a) is that next year, in 2023, NCSSM will use approximately 55,485 sheets of paper. In part b), total of approximately 363,353 sheets of paper will be used from 2018 through the end of 2030.


a) To calculate the paper used in 2023, we start with the initial amount used in 2018, which is given as 60,000 sheets of paper. We then need to calculate the decrease in paper use over the years. The rate of decrease is given as 2.25%, which can be written as 0.0225 in decimal form. To find the paper used in 2023, we multiply the initial amount by (1 - rate of decrease)^5, since five years have passed from 2018 to 2023.

b) To calculate the total paper used from 2018 to 2030, we need to sum up the paper used for each year in that time period. We start with the initial amount used in 2018, which is 60,000 sheets. Then we calculate the paper used each year using the same formula as in part a), multiplying the initial amount by (1 - rate of decrease)^n, where n represents the number of years since 2018. We sum up these values for the years 2018 to 2030, which is a total of 13 years.

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Answer:

The answer is 114.3 cm

Step-by-step explanation:

the formula is c=2(pi)r so it's 2(3.14)(18.2) which is 114.296.

Answer:

h = 1/5

Step-by-step explanation:

The formula to find the volume of this prism is b × w × h (base × width × height). Since you are given the volume, you can divide the volume by the other two dimensions to find the height.

V = b × w × h

1/100 = 1/4 × 1/5 × h

1/100 ÷ 1/4 ÷ 1/5 = h

h = 1/5

We are supposed to determine the best loan plan among Plan A and Plan B, and the difference in the amount that we would have to pay back if we choose either of the plans.

We can start by using the formula to calculate the future value of a loan: FV = PV * (1 + r/n)^(nt)

whereFV = Future valuePV = Present value r = rate of interestn = number of times compounded in a year t = time (in years)

Plan A: Loan amount (PV) = $7000

Rate of interest (r) = 10.5%

Number of times compounded in a year (n) = 1

Time (t) = 2 years

Using the formula,FV(A) = $7000 * (1 + 0.105/1)^(1*2) = $8549.97

Plan B: Rate of interest (r) = 9% per annum

Number of times compounded in a year (n) = 12

Time (t) = 2 years

Using the formula,FV(B) = $7000 * (1 + 0.09/12)^(12*2) = $8522.04

Therefore, Plan B is the better loan plan. To determine by how much it is better

, we can subtract the two future values:$8549.97 - $8522.04 = $27.93

Therefore, we would save $27.93 if we choose Plan B instead of Plan A.

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Answer:54−27h

Step-by-step explanation:

if its wrong sorry :)

Answer:

54-27h

Step-by-step explanation:

Using distributive property we can simplify and solve this equation. Follow the steps in the image.

-Hope this helped