Jorge has been helping his little brother Angel learn his multiplication facts. Angel answered 40 flashcards and
got 16 facts correct. What percent of the flashcards did he get incorrect?


Plz anyone?

Answer:

Step-by-step explanation:

n+5n

The reliability of a study using multiple regression analysis depends on a, b, and c, but not d.

Regression analysis depends on Omitted variable bias refers to the problem of leaving out important variables from the regression model that could affect the dependent variable. This can lead to biased and inconsistent estimates of the regression coefficients.

Errors-in-variables refer to measurement errors in the independent or dependent variables. These errors can result in biased and inconsistent estimates of the regression coefficients.

Homoskedasticity in the error term refers to the condition where the variance of the error term is constant across all values of the independent variables. This is important because it ensures that the regression coefficients are unbiased and efficient.

External validity refers to the ability to generalize the findings of a study to other populations or settings. While important for the overall usefulness of the study, it does not affect the reliability of the multiple regression analysis itself. So, regression analysis depends on a,b,c but not on d.

To know more about regression analysis:

https://brainly.com/question/30011167

#SPJ4

Answer:

19

Step-by-step explanation:

A' represents everything out A

B' represents everything out B

C' represents everything out C

So only the outside is left hope this helps

We have that in this case, we have that the measure of an angle on a circle is half the measure of its intercepted arc.

We have that the whole circle corresponds to a 360º, then:

because 360º - 214º = 144º

Then, the the intercepted arc by the angle K is 144º.

Then,

9514 1404 393

Answer:

  b.  [-9, ∞)

Step-by-step explanation:

The function is defined for the value x = -9, so the domain includes that value. The bracket for -9 will be a square bracket, since the value is included in the domain.

The bracket for infinity is always a round bracket.

The domain is ...

  [-9, ∞)

Answer:

How long is each piece of wood?

Expression = 32/x

Solve: How long is each piece of wood if

Hunter cuts the original piece into 8

pieces?

32/8 = 4 foot

If you need to paint your house, you estimate how much paint you will need. Like 4 gallons or whatever.

Answer:

d = 1

Step-by-step explanation:

5(d+2)=15 (Given)

5d + 10 = 15 (distribute)

5d = 5 (subtraction)

d = 1 (division)

The multiple coefficient of determination for this multiple regression analysis is 0.65.

The multiple coefficient of determination, also called R-squared (R²), measures the proportion of the total variation in the dependent variable explained by the independent variables in a multiple regression analysis. To calculate R², we need the total sum of squares (SST) and sum of squares (SSE) values.

In this case, the reported values ​​are SST = 120 and SSE = 42. To find the multiple coefficient of determination, use the following formula:

\(R^2 = 1 - (SSE/SST)\)

Replaces the specified value.

\(R^2 = 1 - (42 / 120)\)

= 1 - 0.35

= 0.65.

Therefore, the multiple coefficient of determination for this multiple regression analysis is 0.65. For illustrative purposes, the multiple coefficient of determination (R²) represents the proportion of the total variation in the dependent variable that can be explained by the independent variables in a multiple regression model.  

Learn more about multiple regression here:
https://brainly.com/question/3737733

#SPJ11

Answer:

6.4 x 1.2=7.68

Step-by-step explanation:

6.4

1.2

----

028

740

add

7.68

3.5 x 4.9=15.435

Answer: A. 2,

B. -11,

C. -25

D. 43

e. -3/2

Step-by-step explanation:

Answer:

14.5

Step-by-step explanation:

15 - (12 -2.5) + 9

1. Solve the Parenthesis first

12 - 2.5 = 9.5

So now we get 15 - 9.5 + 9

2. Solve the minus first

15 - 9.5 = 5.5

So now we get 5.5 + 9

3. Add

5.5 + 9 = 14.5

Answer:

564

Step-by-step explanation:

multiply then change sign then add all

The derivative dy/dx of the equation ysin(x^2) = xsin(y^2) is given by (sin(y^2) - ycos(x^2)2x) / (sin(x^2) - 2yxcos(y^2)).

In the given equation, y and x are both variables, and y is implicitly defined as a function of x. To find dy/dx, we differentiate each term using the chain rule and product rule as necessary.

Differentiating the left-hand side of the equation, we apply the product rule to ysin(x^2). The derivative of ysin(x^2) with respect to x is dy/dxsin(x^2) + ycos(x^2)*2x.

Differentiating the right-hand side of the equation, we apply the product rule to xsin(y^2). The derivative of xsin(y^2) with respect to x is sin(y^2) + x*cos(y^2)2ydy/dx.

Now we have two expression for the derivative of the left and right sides of the equation. To isolate dy/dx, we can rearrange the terms and solve for it.

Taking the derivative of ysin(x^2) = xsin(y^2) with respect to x using implicit differentiation yields:
dy/dxsin(x^2) + ycos(x^2)2x = sin(y^2) + xcos(y^2)2ydy/dx.

By rearranging the terms, we can solve for dy/dx:
dy/dx * (sin(x^2) - 2yxcos(y^2)) = sin(y^2) - y*cos(x^2)*2x.

Finally, we can obtain the value of dy/dx by dividing both sides by (sin(x^2) - 2yxcos(y^2)):
dy/dx = (sin(y^2) - ycos(x^2)2x) / (sin(x^2) - 2yxcos(y^2)).

Learn more about implicit differentiation here brainly.com/question/31568657
#SPJ11

An appropriate choice of representation for the data of hours slept by 14-year-olds in a particular town.

The principal was interested in the number of hours slept per night by 14-year-olds in a particular town.

She gathered data from a random sample of ten 14-year-olds from a local youth group in the town and wanted to create an appropriate graphical representation for the data.

The most suitable graphical representation for her data is Histogram.

A histogram is a graphical display of data using bars of different heights. In a histogram, each bar groups numbers into ranges, called bins.

Taller bars show that more data falls in that bin.

The histogram is commonly used to represent continuous data that has been grouped into equal intervals, although histograms can be drawn for discrete data as well.

Histograms provide a visual representation of the data, with no gaps between bars.

This means that there are no gaps between the bars as there are in a bar graph.

For more related questions on representation:

https://brainly.com/question/15006951

#SPJ8

Answer:

BAR GRAPH (I TOOK THE EXAM)

Step-by-step explanation:

Answer:

16+13+12=41

Step-by-step explanation:

it is acute

Answer:

12 cups of flour

Step-by-step explanation:

if 8 cups of flour=4 cups of sugar what about 6 cups of sugar.you cross multiply.

The value of the variables as identified from the reciprocal function are;

a = 5

h = -6

k = 7

2. The correct option is Option A

A reciprocal function is a mathematical function that can be represented as f(x) = 1/x, where x ≠ 0.

The graph of a reciprocal function is a hyperbola with two branches that approach the x and y axes, but never touch them.

From the information given, we have the function as;

y = a/x - h + k

Given that the function with numbers is written as;

y = 5/x + 6 + 7

To determine the values of a, h and k, we get;

The variable, a = 5

The variable, k = 7

The variable, h = -(6) = -6

Learn more about reciprocal functions at: https://brainly.com/question/12621604

#SPJ1

Answer: 13?i really dont know

Step-by-step explanation:

Answer: D: x/2 = 45; x = 90

Step-by-step explanation:

half of a number is 45:

x/2 = 45

.: x = 90

Your answer is D

Answer:

D

Step-by-step explanation:

The absolute value of the percent change in the volume of the cylinder is 20%.


When the radius of a right circular cylinder is decreased by 20%, its new radius becomes 0.8 times the original radius (1 - 0.20 = 0.8).

Likewise, when its height is increased by 25%, its new height becomes 1.25 times the original height (1 + 0.25 = 1.25).

The volume of a right circular cylinder is given by the formula V = πr²h, where V is the volume, r is the radius, and h is the height. Let V₁ be the original volume, and V₂ be the new volume after the changes.

V₁ = π(r)²(h) and V₂ = π(0.8r)²(1.25h)

V₂ = π(0.64r²)(1.25h) = 0.8πr²h

Thus, the new volume is 0.8 times the original volume. This represents a 20% decrease in volume (1 - 0.8 = 0.20 or 20%). So, the absolute value of the percent change in the volume of the cylinder is 20%.

In summary, decreasing the radius by 20% and increasing the height by 25% results in a 20% decrease in the volume of the right circular cylinder.

Know more about  right circular cylinder here:

https://brainly.com/question/2963891

#SPJ11

The height of the tower is about 250 feet.

We can use trigonometry to determine the height of the tower.

Let's label the height of the tower as "h". Then we can use the sine function:

sin(39) = h/400

Multiplying both sides by 400, we get:

h = 400 × sin(39)

h = 250.11.

Hence, the height of the tower is about 250 feet.

To learn more on trigonometry click:

https://brainly.com/question/25122835

#SPJ1

160 ounces or 10 pounds of cheese is $ 15 and 84 cents.

The unitary approach is a strategy for problem-solving that involves first determining the value of a single unit, then multiplying that value to determine the required value.

Direct Variation

When there is a direct variation, an increase or decrease in one quantity will result in an equivalent rise or fall in the other. For instance, a rise in the quantity of commodities will result in higher costs.

Indirect Variation

A change in one quantity will directly affect a change in another, known as a direct variation. A rise in the quantity of goods, for instance, will result in higher costs.

We can say 1 pound = 16 ounces

10 pounds = 10 * 16 = 160 ounces

10 ounces of cheese is 99 cents

1 ounce of chess is 99/10 cents

160 ounces of cheese is 99*160/10 = 1584 cents = $ 15 and 84 cents.

To learn more about Unitary Method refer to :

https://brainly.com/question/11998060

#SPJ4

Hence, the coordinates of the new triangle are \(A(2,0),B(7,-2),C(2,-2)\).

What is the coordinates?

A pair of numbers that describe the position of a point on a coordinate plane by using the horizontal and vertical distances from the two reference axes. Usually represented by \((x,y)\) the x-value and y-value.

Here given coordinates are

\((-2,3),(3,1),(-2,1)\\\\(-2,0),(3,-2),(-2,-2)\\\\( - 2 , 0 ) , ( 3 , - 2 ) , ( - 2 , -2 )\)

Suppose \(a\) units on the horizontal and \(b\) units on the vertical. Then, the new coordinate become

\(A(x,y)=A(x+a,y+b)\)

As per the question triangle \(ABC\) is translated \(4\) units to the right and \(-3\)units down.

So, \(a=4,b=-3\) and the coordinates are

\(A(-2,3),B(3,1),C(-2,1)\\\\\)

Then,

\(A(-2+a,3+b)=A(-2+4,3-3)=A(2,0)\\\\B(3+a,1+b)=B(3+4,1-3)=B(7,-2)\\\\C(-2+a,1+b)=C(-2+4,1-3)=C(2,-2)\)

Hence, the coordinates of the new triangle are \(A(2,0),B(7,-2),C(2,-2)\).

To know more about the coordinates

https://brainly.com/question/28908115

#SPJ1

A perfect linear relationship is essential for making accurate inferences in regression analysis. If the relationship between the variables is not linear, the results from the analysis may not be valid or reliable.

Option (a) would have resulted in a violation of the conditions for inference, as it would not be a representative sample of the population. Inference relies on the sample being representative of the population, and selecting the entire sample from one classroom would not be a random selection from the population.

Options (b), (c), (d), and (e) do not necessarily violate the conditions for inference. The sample size of 15 may affect the precision of the estimate, but it does not necessarily violate the conditions for inference.

A perfect linear relationship is essential for making accurate inferences in regression analysis. The scatterplot not showing a perfect linear relationship is expected in most cases, as perfect linear relationships are rare in real-world data. The histogram having an outlier may affect the distribution, but it does not necessarily violate the conditions for inference. And the standard deviation of foot length is different from the standard deviation of height is expected, as they are measuring different variables.

Learn more about regression analysis:

brainly.com/question/30011167

#SPJ11

Because Kim is observing 100 moviegoers that entered the movie theatre in the first hour and it was a very easy access for him to observe the people, this sampling method will come under the Convenience sampling.

Convenience sampling is a non-probability sampling strategy in which units are chosen for inclusion in the sample because they are the most easily accessible to the researcher. This might be because of geographical closeness, availability at a specific time, or desire to engage in the research. Because Kim surveys 100 moviegoers who entered the movie theater inside the first hour. Convenience sampling is a sort of sampling method because Kim has easy access to his sample location. Nobody is going to stop him here, and he may make whatever observations he wants while doing his experiment.

To know more about Convenience sampling, visit,

https://brainly.com/question/28046586

#SPJ4

Answer: 46.2m

Side A = 7m

Side B = 19m

Side C = 20.2m

Side A + Side B + Side C = ABC

7 + 19 + 20.2 = 46.2m

Answer:

The inequality is

10+7x\leq 4010+7x≤40

Step-by-step explanation:

Let

x-----> the number of child tickets

we know that

10+7x\leq 4010+7x≤40 -----> inequality that represent the situation

Solve for x

7x\leq 40-107x≤40−10

7x\leq 307x≤30

x\leq 4.3x≤4.3

The maximum number of child tickets is 4

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. The total number of all these items is 19,607.

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.

There are seven houses, each containing seven cats.

Each cat kills seven mice.

Each mouse would have eaten seven ears of corn.

Each ear of corn would have produced seven sacks of grain.

Now, the total number of all these items is,

Total number of items

= Number of house + Number of cars + Number of mice + Number of ears of corns + Number of sack of grains

= 7 + 49 + 343 + 2401 + 16807

= 19,607

Hence, the total number of all these items is 19,607.

Learn more about Multiplication here:

https://brainly.com/question/14059007

#SPJ2

Answer:

Step-by-step explanation:

Using exponential function concepts, it is found that:

The model is: .

The car will be worth $13,625 in 7 years.