Find the difference: (11x2+2x+16) – (2x2+x+2)​

Answer:

Endpoint = (32,-23)

Step-by-step explanation:

end point = (16,-17)

midpoint = 24,-20)

other point = (x,y)

(x + 16)/2 = 24

x + 16 = 24 * 2

x + 16 = 48

x + 16-16 = 48-16

x = 32

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

(y - 17/2 = - 20

y - 17 = - 20 * 2

y - 17 = - 40

y - 17+17 = - 40 + 17

y = - 23

Answer:

➢ 0.9

➢ -95

➢ -79

\(BlackSparkles...\)

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Answer:

200

Step-by-step explanation:

10*20=200.

I am not positive what you are asking but that is the answer I am able to give at this moment.

I hope I at least helped you. :)

The equation for the hyperbola with foci (0,±5) and asymptotes y=± 3/4 x is:

y^2 / 25 - x^2 / a^2 = 1

where a is the distance from the center to a vertex and is related to the slope of the asymptotes by a = 5 / (3/4) = 20/3.

Thus, the equation for the hyperbola is:

y^2 / 25 - x^2 / (400/9) = 1

or

9y^2 - 400x^2 = 900

The center of the hyperbola is at the origin, since the foci have y-coordinates of ±5 and the asymptotes have y-intercepts of 0.

To graph the hyperbola, we can plot the foci at (0,±5) and draw the asymptotes y=± 3/4 x. Then, we can sketch the branches of the hyperbola by drawing a rectangle with sides of length 2a and centered at the origin. The vertices of the hyperbola will lie on the corners of this rectangle. Finally, we can sketch the hyperbola by drawing the two branches that pass through the vertices and are tangent to the asymptotes.

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Answer:

u = 24

Step-by-step explanation:

-7/8u = -21

Solve for u

Multiply each side by -8/7

-8/7 *-7/8u = -21 *-8/7

u =3*8

u = 24

Answer:

u = 1/24

Write the equation:

–7/8u = –21

Get rid of fraction:

–7/2^3 • u = –21

–7 = ( – (8u) ) 21

Solve:

–7 = –8u + 21

–7 + 8u = –8u + 8u + 21

–7 + 8u = 21

–7 + 7 + 8u = 21 + 7

8u = 21 + 7

8u = 28

u = 1/24

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Answer:

$7.47

Step-by-step explanation:

Since a 8-ounce salad cost 2.49

You do 2.49+1 pound times 0.25

1 pound equals to 16 ounces

2.49 + 2.49 + 2.49

Correct. If I am wrong

Answer:

Step-by-step explanation:

the base is 2.49 for eight ozs so you already take off the ozs from 1 pound

since there are 16 ounces in one pound you multiply 16 by .25 and get 4 so you add 2.49 and 4 to get 6.49$ is the answer assuming there is no tax on the food

Answer:

x=3

Step-by-step explanation:

2(10x+2)=64

20x+4=64

20x=60

x=60÷20

x=3

Answer:

x=3

Step-by-step explanation:

2

(10x+2)=64

=

20x+4=64

Subtract 4 from both sides

20x=60

Divide both sides by 20

20x/20 = 60/20

therefore x = 3

Answer:

Let

\(\qquad\quad {:}\longmapsto\sf The\: breadth =x\: ft\)

\(\qquad\quad {:}\longmapsto\sf The\:length=x+1ft\)

\(\qquad\quad {:}\longmapsto\sf Area=210ft^2 \)

\({\boxed {\sf Area=length\times Breadth}}\)

\(\qquad\quad {:}\longmapsto\sf x (x+1)=210 \)

\(\qquad\quad {:}\longmapsto\sf x^2+x=210 \)

\(\qquad\quad {:}\longmapsto\sf x^2+x-210=0 \)

\(\qquad\quad {:}\longmapsto\sf x^2+15x-14x-210=0 \)

\(\qquad\quad {:}\longmapsto\sf x (x+15)-14 (x+15)=0 \)

\(\qquad\quad {:}\longmapsto\sf (x+15)(x-14)=0 \)

\(\qquad\quad {:}\longmapsto\sf x+15=0\:or\:x-14=0 \)

\(\qquad\quad {:}\longmapsto\sf x=-15\:or\:x=14 \)

Hence correct value

\(\qquad\quad {:}\longmapsto\sf x=14\)

\(\qquad\quad {:}\longmapsto\sf Breadth =x=14ft\)

\(\qquad\quad {:}\longmapsto\sf Length=x+1=14+1=15ft \)

Answer:

b. (3 x 6) + (2 x 12) + (20 x 18)

Step-by-step explanation:

Number of cartons containing 6 eggs

Number of cartons containing 12 eggs

Number of cartons containing 18 eggs

So,

expression that represents the problem is given by

Number of cartons containing 6 eggs + Number of cartons containing 12 eggs + Number of cartons containing 18 eggs = (3 x 6) + (2 x 12) + (20 x 18)

Answer:

Step-by-step explanation:

Answer:

Queen Messy here!

0.451

moving the decimals to the left when dividing (:

Step-by-step explanation:

The simplified form of the given coordinate is (0.75,1.5) and the points in the coordinate plane given below:

In the given question we have to represent in given point in the coordinate plane.

The given coordinate is (3/4, 1 1/2).

In the given coordinate we firstly simplify the given coordinate.

We solve 1 1/2 this mixed fraction in the improper fraction.

To convert into improper fraction we multiply 1 with 2 then add with 1.

So simplified form is;

1 1/2 = 3/2 = 1.5

We can write 3/4 as 0.75.

So the simplified form is (0.75, 1.5).

The point on the coordinate plane is given below:

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Answer:

"Wooden leg" is the correct answer.

The equation for traveling x miles in the cab can be written as:

Cost = $0.60 + $0.14 * x. The cab charges $0.88 for a ride of 2 miles. And the cab charges $1.72 for a trip of 8 miles.

a. The equation for traveling x miles in the cab can be written as:

Cost = $0.60 + $0.14 * x

b. To find the number of miles for a cab ride that costs $0.88, we can set up the equation:

$0.88 = $0.60 + $0.14 * x

Subtracting $0.60 from both sides, we get:

$0.88 - $0.60 = $0.14 * x

$0.28 = $0.14 * x

Dividing both sides by $0.14, we find:

x = $0.28 / $0.14

x = 2 miles

Therefore, the cab charges $0.88 for a ride of 2 miles.

c. To calculate the cost of a trip of 8 miles, we can substitute x = 8 into the equation:

Cost = $0.60 + $0.14 * 8

Cost = $0.60 + $1.12

Cost = $1.72

Therefore, the cab charges $1.72 for a trip of 8 miles.

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The statement "It is more likely to represent the population effect" is not true of the adjusted R2.

What is statement?

In the context of logic and mathematics, a statement refers to a declarative sentence or proposition that is either true or false. It is a meaningful assertion that can be evaluated for its truth value.

The adjusted R2 is a statistical measure that adjusts the R2 (coefficient of determination) to account for the number of predictor variables in a regression model. It quantifies the proportion of the variance in the dependent variable that is explained by the independent variables in the model. The adjusted R2 takes into consideration the degrees of freedom and penalizes the inclusion of unnecessary predictor variables.

However, the adjusted R2 does not necessarily represent the population effect. It is a sample-based statistic that provides an estimate of the amount of variance explained in the sample data. The adjusted R2 may or may not accurately reflect the true population effect. Its value can be influenced by factors such as the sample size, model specification, and assumptions of the regression model.

Therefore, the statement "It is more likely to represent the population effect" is not true for the adjusted R2.

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Answer:

15 feet

Step-by-step explanation:

This is calculated using the formula

Height of observation tower/Shadow of observation tower = Height of Marble column/Shadow of marble column

From the question

Height of observation tower = 60 ft

Shadow of observation tower = 32 ft

Height of Marble column = ? x

Shadow of marble column = 8 ft

Hence:

60ft/32ft = x/8ft

Cross Multiply

60ft × 8 ft = 32ft × x

x = 60 ft × 8 ft/32 ft

x = 15 ft

Therefore, the marble column is 15 feet tall

The one that has the most circles in a group :D

The option giving the perimeter of the fountain, considering it's concept, is given as follows:

D. 48 feet.

The perimeter of a polygon is given by the sum of all the lengths of the outer edges of the figure, that is, we must find the length of all the edges of the polygon, and then add these lengths to obtain the perimeter.

We have a triangular fountain, hence the the lengths for this problem are given as follows:

(we used the formula for the distance between two points on the coordinate plane to obtain the side lengths on the triangle).

Hence the perimeter is given as follows:

15 + 15 + 18 = 48 feet.

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The time it will take to do all the activities at the same time is given as follows:

60 minutes = one hour.

Considering periodic events, they will repeat on the same day for the least common factor of the periods of each event.

The periods of each event are given as follows:

The least common factor is obtaining factoring these numbers according to their prime factors, as follows:

15 - 12 - 10|2

15 - 6 - 5|2

15 - 3 - 5|3

5 - 1 - 5|5

1 - 1 - 1

Hence:

lcm(15,12,10) = 2² x 3 x 5 = 60 minutes.

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The identified parameters are:

ta = 6 minutes

tθ = 11 minutes

∂a = 4 minutes

∂θ = 20 minutes

ra = 1/6 minutes^(-1)

rθ = 1/11 minutes^(-1)

ta: Mean time between calls to the center

tθ: Effective response time

∂a: Standard deviation of the time between calls to the center

∂θ: Standard deviation of the effective response time

ra: Rate of calls to the center (inverse of ta, i.e., ra = 1/ta)

rθ: Rate of effective response (inverse of tθ, i.e., rθ = 1/tθ)

Given information:

Mean time between calls to the center (ta) = 6 minutes

Standard deviation of time between calls (∂a) = 4 minutes

Effective response time (tθ) = 11 minutes

Standard deviation of effective response time (∂θ) = 20 minutes

Using this information, we can determine the values of the parameters:

ta = 6 minutes

tθ = 11 minutes

∂a = 4 minutes

∂θ = 20 minutes

ra = 1/ta = 1/6 minutes^(-1)

rθ = 1/tθ = 1/11 minutes^(-1)

So, the identified parameters are:

ta = 6 minutes

tθ = 11 minutes

∂a = 4 minutes

∂θ = 20 minutes

ra = 1/6 minutes^(-1)

rθ = 1/11 minutes^(-1)

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(i) When testing whether girls who attended girls-only high schools do better in math, it is important to control for various factors that could potentially influence math scores.

Some factors to consider are:

(ii) The equation relating the math score (score) to girlhs (dummy variable indicating girls-only high school attendance) and other factors can be written as:

score = β0 + β1 * girlhs + β2 * socioeconomic status + β3 * prior academic performance + β4 * school quality + β5 * peer effects + β6 * teacher quality + β7 * access to resources + ε

This equation represents the structural relationship between the math score and the factors being controlled for. The coefficients β1, β2, β3, β4, β5, β6, and β7 represent the respective effects of girlhs and the other factors on the math score.

(iii) Parental support and motivation, which are unmeasured factors, may be correlated with girlhs. This is because parents who choose to send their daughters to girls-only high schools might have certain preferences or beliefs regarding education, which could include providing higher levels of support and motivation. However, without directly measuring parental support and motivation, it is difficult to establish a definitive correlation.

(iv) To ensure that numghs (the number of girls-only high schools within a 20-mile radius of a girl's home) is a valid instrumental variable (IV) for girlhs, certain assumptions are needed:

(v) If the coefficient estimate on the chosen IV numghs is negative and statistically significant in the reduced form estimation, it suggests a strong relationship between the instrumental variable and the attendance at girls-only high schools. This provides some confidence in the validity of the IV. However, the decision to proceed with IV estimation should also consider other factors such as the strength of the instruments, the overall model fit, and the robustness of the results to alternative specifications.

It is important to carefully evaluate the assumptions and limitations of the IV estimation approach before drawing conclusions in math.

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The answer for this question is false.

We know that about the sampling distribution, for this case is what is the probability that we obtain his sample this extreme?

So let's say the meanest  zero here we obtained samples or Have it. That's a Z score of 2.86 from the Normal Distribution,

for example, that would be a very extreme sample. And we want to find what is the probability that we selected sample?

If the null hypothesis is true, However, what is non random means there are biases, then the bias will cause the result to be either larger or you lower than the population mean also called the population average or 'u'. Not by chance, but by human selection. So which prevents us from drawing any definitive conclusion from our results.

Hence, the answer is False.

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Answer:

I believe 90π

Step-by-step explanation:

V=πr2h=π·32·10≈282.74334

90π ≈ 282.6

The equations have the following number of solutions: a) 1 solution, b) 0 solutions, c) 11 solutions

a) The equation 21 + a^2 + 4 = 100 simplifies to a^2 = 75, which means that a can only be the positive integer 9. Therefore, there is only one solution to this equation, which is a = 9.

b) The equation a1 + a2 + a3 + a4 + as2 + as = 100 can be simplified to a1 + a2 + a3 + a4 = 76 - as2 - as. Since 41 ≤ as ≤ 44 and as2 ≤ as, the maximum value of as2 + as is 44 + 44 = 88. Therefore, the minimum value of a1 + a2 + a3 + a4 is 76 - 88 = -12, which is impossible since all the variables are non-negative integers. Hence, there are no solutions to this equation.

c) The equation a + 12 + as = 100 can be rewritten as a + as = 88, where 0 ≤ a ≤ 88 and 0 ≤ as ≤ 10. Since as is bounded by 10, we can simply compute the values of a for as = 0, 1, 2, ..., 10 and count the number of solutions. For each value of as, there is exactly one value of a that satisfies the equation, which means that there are 11 solutions in total.

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Answer:

14

Step-by-step explanation:

10 questions = 4 correct + 6 incorrect

4 correct = 4* 5 = 20

6 incorrect = 6* (-1) = -6

His score is 20 -6 = 14 points

Answer:

the (X) is 4 so that means both of X's are 4 and u need to choose 4

Step-by-step explanation:

X=4

Answer:   y = (x-2)/3

This is equivalent to y = (1/3)x - 2/3

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

To get this answer, we need to swap x and y in the original equation. Then solve for y to get the inverse.

y = 3x+2

x = 3y + 2 ... x and y swapped

x-2 = 3y

3y = x-2

y = (x-2)/3

y = x/3 - 2/3

y = (1/3)x - 2/3

This final equation has slope 1/3 and y intercept -2/3

Question:

Abraham has visited at least 50 countries; he plans to visit five new countries per year (Y) for the next several years. Which inequality and solution shows the amount of years they will take for Abraham to meet his goal.

Answer:

\(Countries \geq 50 + 5y\)

\(y \leq 29\)

Step-by-step explanation:

Given

\(Countries = 50\) ------ at least

\(Yearly =5\)

Required

Represent as an inequality

"at least" means \(\geq\)

So the countries he has visited can be represented as thus;

\(Countries \geq 50\)

If

1 year = 5 countries

y years would be 5y countries

So, in y years; he'd have visited

\(Countries \geq 50 + 5y\)

To determine the value of y.

We have that

\(Countries = 195\) in the world

Substitute 195 for Countries

\(195 \geq 50 + 5y\)

Collect Like Terms

\(195 - 50 \geq 5y\)

\(145 \geq 5y\)

Divide through by 5

\(145/5 \geq y\)

\(29 \geq y\)

Reorder

\(y \leq 29\)

This means that; he'll visit all countries in at most 29 years' time