Find x
(4+25)
(6x+20)
(3x+25)

The equation that can be used to compute the number of pieces of jewellery is ($120 + $15q)/q = $20 .

Average cost is total cost divided by the quantity of jewellery sold.

Average cost = total cost / quantity

Total cost is the sum of fixed cost and variable cost.

Total cost = fixed cost + variable cost

The fixed cost is the cost of renting the stall. The variable cost is the cost of the materials.

Total cost = $120 + ($15 x q)

T = $120 + $15q

Average cost = ($120 + $15q)/q = $20

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Answer:

10 + 78.567 = 88.567

Step-by-step explanation: thank you

In Herrnstein's matching equation, the letters and numbers to the left of the equals sign refer to behaviour.

THE MATCHING LAW

Herrnstein's Experiment Herrnstein (1961) conducted an experiment with pigeons in a room with two response buttons, red and white. Each key was assigned its own VI gain schedule. For example, under one condition, the left button pick was boosted on a VI 135 second schedule, and the right button pick was boosted on a VI 270 second schedule.

After the birds have learned as much as possible about this electoral situation, how do they distribute their responses? We trained them for days and then measured their reactions. As is often the case with VI schedules, birds returned many responses for each reinforcer received. Most interesting, however, is that in this condition, where two-thirds of the reinforcers came from the left button, the birds performed about two-thirds of the responses with the left button. That is, the proportion of left button responses equaled or matched the proportion of reinforcers delivered by the left button. In another condition, two birds received only about 15% of reinforcers from the left key and responded about 15% to that key.

Based on these results, Herrnstein proposed the following general principle for individual behavior when presented with alternative sequences. So, what you think makes sense rather than other options available at that particular moment.

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Answer:

Step-by-step explanation: to solve this we'd do 2-(-5) which is the same as  2 + 5 which is 7. final answer is 7/3 or if its a mixed number, 2 1/3

A confidence interval is constructed to estimate the value of a parameter.

In statistics, a parameter refers to a numerical characteristic of a population, such as the population mean or population proportion. When we want to estimate the value of a parameter, we construct a confidence interval.

A confidence interval provides a range of values within which we believe the true parameter value is likely to fall, based on our sample data. It is constructed using sample statistics and takes into account the variability and uncertainty in the estimation process.

A confidence interval is constructed to estimate the value of a parameter, not a statistic.

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Answer:

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

Use the formula for simple interest:

where:

Substituting the given values into the formula, we get:

Therefore, the rate of interest per year is 8%.

Given:

4z-2z(1+4)-36 for z=5

4z-2z(1+4)-36=4(5)-2(5)(5)-36

=20-50-36

=-66

A percentage is essentially a fraction, but lazily written. Think of a percent as 25/100, or 0.25.

Now multiply the two.

0.25x5/8.

We need to convert 5/8 to a decimal, which is 0.625.

0.25x0.625=0.15625.

Now convert the decimal to a fraction, which is 5/32.

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hope it helps

Answer:

8/4 = 2

Step-by-step explanation:

Answer:

p.

Step-by-step explanation:

I just took the quiz and got it correct.

Hope this helps! ^^

Answer:

p

Step-by-step explanation:

just took it

The point estimate of the difference between the means of the two populations can be calculated by subtracting the sample mean of employees with an associate's degree from the sample mean of employees with a bachelor's degree.

Therefore, the point estimate would be:
Point estimate = 60 - 51 = 9 (in $1,000

This means that employees with a bachelor's degree have a higher average salary than those with an associate's degree by approximately $9,000.

It is important to note that this is only a point estimate, which is a single value that estimates the true difference between the population means. It is based on the sample data and is subject to sampling variability. Therefore, the true difference between the population means could be higher or lower than the point estimate.

To determine the level of precision of this point estimate, confidence intervals and hypothesis tests can be conducted using statistical methods. This would provide more information on the accuracy of the point estimate and help in making informed decisions.

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Answer:

16

Step-by-step explanation:

Area of a triangle = 1/2(b×h)

b or l = x+4

h = x

a = 40

1/2(x+4 × x) = 40

1/2(x+4 × x) = 40x + 4 × x / 2 = 40

4 × x = 4x

4x + x = 5x

5x/2 = 40

cross-multiply

40 × 2 = 5x

40 × 2 = 5x80 = 5x

divide both sides by 5

5x/5 = 80/5

5x/5 = 80/5x = 16

Answer:

3(d - 1)

Step-by-step explanation:

You can factor 3 out from the expression to get 3(d - 1).

Hope this helps :)

Answer:

3(d- 1) = 3d - 3 as factor or  we an re-arrange  to show another  -3 + 3d    so  3(d-1) =3d-3 if asked to rearrange

Step-by-step explanation:   3d -3 = 3(d-3 )An equation states that two expressions are equal in value      But if asked to re-arrange then we would show that 3d-3 = -3 + 3d  as we we remove the bracket and we would re-arrange

When we use the Associative Property to write an expression equivalent to (w+9)+3 we simply place the number outside of the bracket infront of the bracket and multiply by a number that divides cleanly into it so that 3(d-1) = 3d - 3

Answer:

Step-by-step explanation:

It's pretty simple.

All you have to do is this:

All we did was put a percentage sign at the end at the number.

If you want to do it the hard way,

Do this:

What we did was move a decimal point 2 spaces to the left.

This also counts as a percentage.

Answer:

On the surface, it seems easy. Can you think of the integers for x, y, and z so that x³+y³+z³=8? Sure. One answer is x = 1, y = -1, and z = 2. But what about the integers for x, y, and z so that x³+y³+z³=42?

That turned out to be much harder—as in, no one was able to solve for those integers for 65 years until a supercomputer finally came up with the solution to 42. (For the record: x = -80538738812075974, y = 80435758145817515, and z = 12602123297335631. Obviously.)

Step-by-step explanation:

Yes, the set is a subspace of Ps.

- The zero vector of P8 is the polynomial with all coefficients equal to zero, which clearly has rational coefficients. Therefore, it is in the given set.
- The set is closed under vector addition because if you add two polynomials with rational coefficients, the resulting polynomial also has rational coefficients.
- The set is closed under multiplication by scalars because if you multiply a rational number (which is a scalar) by a polynomial with rational coefficients, the resulting polynomial still has rational coefficients.

Since the set contains the zero vector, is closed under vector addition, and is closed under multiplication by scalars, it meets all the criteria for being a subspace of Ps.

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Answer:

Triangles

A=bxh

= 21x20

=420cm^2

(There are two triangle faces that's why I didn't divide by 2, it simply cancelled out the division of 2)

Base of shape

A=bxh

=20x22

=440cm^2

Front

A=bxh

=22x29

=638cm^2

Back

A=bxh

=22x21

=462cm^2

Total them

420cm^2 + 440cm^2 + 638cm^2 + 462cm^2 = 1960cm^2

Answer is 1960cm^2

Hope this helps!

GCH 1640.00......pls follow me and mark brainliest

Step-by-step explanation:

fall in price will be

20/100 × 1800.00

= 20 × 18

= 360.00

...

...

so the cost of selling it at a loss of GHC 360.00

will be 1800-360 = GCH 1640.00

Answer:

18,176

Step-by-step explanation:

Figure out an easier thing to do: 1000 - 2021 = 9,797.

Therefore, our answer will be like 9999999999999999999999997979. Out of all of these digits, there are only 2 that arent nines. We know the amount of digits since it's 10^2021 power. We will have one less since we are subtracting 2021. Therefore, 2020 digits in total. Now we know of those 2020 digits, 2 of them are 7, therefore 2018 of them are 9s. That means do 2018(9) + 2(7) = 14 + 18,162 =  18,176.

The set of numbers {6, 8, 14} and the set {11, 14, 22} could represent the three sides of a triangle.

To determine whether a set of numbers could represent the sides of a triangle, we need to check if it satisfies the triangle inequality theorem. According to the theorem, the sum of any two sides of a triangle must be greater than the length of the third side.

Let's evaluate each set of numbers:

1. {6, 8, 14}

  The sum of the two smaller sides is 6 + 8 = 14, which is greater than the third side 14. Therefore, this set could represent the sides of a triangle.

2. {13, 20, 34}

  The sum of the two smaller sides is 13 + 20 = 33, which is less than the third side 34. Hence, this set cannot represent the sides of a triangle.

3. {11, 14, 22}

  The sum of the two smaller sides is 11 + 14 = 25, which is greater than the third side 22. Therefore, this set could represent the sides of a triangle.

4. {13, 20, 35}

  The sum of the two smaller sides is 13 + 20 = 33, which is less than the third side 35. Hence, this set cannot represent the sides of a triangle.

In summary, the sets {6, 8, 14} and {11, 14, 22} could represent the three sides of a triangle.

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Answer:

Step-by-step explanation:

Answer:

(- 3, - 5 ) , (3, 7 )

Step-by-step explanation:

Given the 2 equations

y = 2x + 1 → (1)

y = x² + 2x - 8 → (2)

Substitute y = x² + 2x - 8 into (1)

x² + 2x - 8 = 2x + 1 ( subtract 2x + 1 from both sides )

x² - 9 = 0 ( add 9 to both sides )

x² = 9 ( take the square root of both sides )

x = ± \(\sqrt{9}\) = ± 3

Substitute these values into (1) for corresponding values of y

x = - 3 : y = 2(- 3) + 1 = - 6 + 1 = - 5 ⇒ (- 3, - 5 )

x = 3 : y = 2(3) + 1 = 6 + 1 = 7 ⇒ (3, 7 )

Answer:

I am pretty sure its 1.99

Step-by-step explanation:

12/10.99= ~1.09

24/25.99=~0.80

1.09+0.80=1.99

The equation of the line in the form ax + by = c, with x-intercept -10 and y-intercept -2, and where a = 20, can be written as 20x + 2y = -40.

To find the equation of the line, we can use the given intercepts (-10, 0) and (0, -2) to determine the values of a, b, and c in the equation ax + by = c.

First, we find the slope of the line using the two intercept points:

slope = (y2 - y1) / (x2 - x1) = (-2 - 0) / (0 - (-10)) = -2 / 10 = -1/5

Since the y-intercept is -2, we have the point (0, -2) on the line.

Using the slope-intercept form of a line, y = mx + b, we can substitute the slope and the y-intercept to solve for b:

-2 = (-1/5)(0) + b

-2 = b

Now we have the values of a, b, and c: a = 20, b = -2, and c = -40.

Substituting these values into the equation ax + by = c, we get:

20x + 2y = -40.

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Step-by-step explanation:

|x-4|=6x+16 To find the absolute value :

x - 4 = 6x + 16 or x - 4 = -6x - 16 for first equation

x - 4 = 6x + 16 export like terms to the same side of the equation

-4 - 16 = 6x - x (The terms chages signs from negative to positive and from positive to negative when exported to the other sideof the equation)

-20 = 5x divide by 5

-4 = x

For the second equation

x - 4 = -6x - 16 export like terms to the same side of the equation

x + 6x = -16 + 4

7x = -12

x = 1.7 approximately

Answer:

you can name the angles too

Step-by-step explanation:

first 75 is in corresponding angle at opposite angle of z. Now,

z+ 75=180 (straight angle)

z=105

5x -105=75 (vertically opposite angle)

5x=180

X=36

Answer:

that earns 3% interest compounded annually. He ... Is the equation A = 21000(1 – 0.12)'a model of ... (1+0.03)= 1.03 ... The value of a car purchased for $20,000 decreases ... Kathy plans to purchase a car that depreciates. ... B) P= 10,000(0.8) ... YEARS. Wolves d is less than 1! d is more than 11. 1 Growth f(x) = 80(0.1165).

Step-by-step explanation:

To find the LSQ quadratic polynomial for the given data set, we need to start with creating the design matrix and observation vector. The design matrix X is constructed using the x values of the data set and is given by:
X = [1 -2 4; 1 0 0; 1 -2 4; 1 1 1]

Here, each row corresponds to one data point, with the first column representing the constant term, the second column representing the linear term, and the third column representing the quadratic term.
The observation vector y is constructed using the corresponding y values of the data set and is given by:
y = [1; 1; 1; 3]
Now, to find the LSQ quadratic polynomial, we need to solve the linear system X'Xp = X'y, where p is the parameter vector containing the coefficients of the quadratic polynomial.
Solving this system, we get:
p = [-11/4; 1/2; 9/4]
Therefore, the best fit quadratic polynomial for the given data set is:
y(x) = 20 - 11/4x + 1/2x^2 + 9/4x^2
Note that the constant term 20 is not obtained from the linear system and is instead taken directly from the polynomial form.

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Answer:

Yes, correct

Step-by-step explanation:

Answer:

14,593 -> 39,541: Correct!

Step-by-step explanation: