The following data represent the results from an independent-measures experiment comparing three treatment conditions. Use SPSS to conduct an analysis of variance with a 0.05 to determine whether these data are sufficient to conclude that there are significant differences between the treatments. Treatment A Treatment 8 Treatment C 6 9 12 4 4 10 6 5 8 4 6 11 5 6 9 Fratio= p-value= Conclusion: These data do not provide evidence of a difference between the treatments There is a significant difference between treatments Progress saved Done i Song O OD o not provide evidence of a difference between the treatments There is a significant difference between treatments The results obtained above were primarily due to the mean for the third treatment being noticeably different from the other two sample means. For the following data, the scores are the same as above except that the difference between treatments was reduced by moving the third treatment closer to the other two samples. In particular, 3 points have been subtracted from each score in the third sample. Before you begin the calculation, predict how the changes in the data should influence the outcome of the analysis. That is, how will the F-ratio for these data compare with the F-ratio from above? Treatment B Treatment C Treatment A 6 9 9. 4 4 7 6 5 5 4 6 8 5 6 6 F-ratio= p-value= Conclusion: There is a significant difference between treatments These data do not provide evidence of a difference between the treatments

a) There are no solutions to the equation.

To find all solutions to the equation 34 - 38 = 3, we can simplify the equation:

34 - 38 = 3

-4 = 3

However, this equation is not true, as -4 is not equal to 3. Therefore, there are no solutions to the equation.

b) Now, let's consider the diophantine equation 1/x + 1/y = 1/5, where x and y are integers. To find all solutions, we can follow these steps:

1: Multiply both sides of the equation by 5xy to eliminate the denominators:

5y + 5x = xy

2: Rearrange the equation:

xy - 5x - 5y = 0

3: Apply Simon's Favorite Factoring Trick:

Add 25 to both sides to complete the square:

xy - 5x - 5y + 25 = 25

xy - 5x - 5y + 25 = 25

(xy - 5x - 5y + 25) + 25 = 25 + 25

(x - 5)(y - 5) = 50

4: List all possible factor pairs of 50:

(1, 50), (2, 25), (5, 10), (-1, -50), (-2, -25), (-5, -10)

5: Solve for x and y in each factor pair:

For (x - 5)(y - 5) = 50:

If x - 5 = 1 and y - 5 = 50, then x = 6 and y = 55.

If x - 5 = 2 and y - 5 = 25, then x = 7 and y = 30.

If x - 5 = 5 and y - 5 = 10, then x = 10 and y = 15.

If x - 5 = -1 and y - 5 = -50, then x = 4 and y = -45.

If x - 5 = -2 and y - 5 = -25, then x = 3 and y = -20.

If x - 5 = -5 and y - 5 = -10, then x = 0 and y = -5.

Therefore, the solutions to the diophantine equation 1/x + 1/y = 1/5, where x and y are integers, are:

(x, y) = (6, 55), (7, 30), (10, 15), (4, -45), (3, -20), (0, -5).

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Answer:

for 100: 14,800

for 10: 14,780

for 1: 14,780

for 1000: 15,000

Step-by-step explanation:

ok so just go for like if its

18 its going to be 20 if its 11 its going to be 10

Hope this helps!!

PLEASE CROWN TYY

Answer:

Rounding Rules:

1. If the number you are rounding is followed by 5, 6, 7, 8, or 9, round the number up. Example: 38 rounded to the nearest ten is 40. ...

2. If the number you are rounding is followed by 0, 1, 2, 3, or 4, round the number down. Example: 33 rounded to the nearest ten is 30.

Step-by-step explanation:

100: 14,800

10: 14,780

1: 14,780

1000: 15,000

If Becky buys 1 cup of coffee and 4 pieces of cake, her total utility can be calculated by summing the individual utilities for each item consumed. According to the given estimates, the total utility from 1 cup of coffee is 35, and the total utility from 4 pieces of cake is 91. Therefore, Becky's total utility for this consumption bundle would be 35 + 91 = 126.

The table provided showcases the relationship between the quantities of coffee and cake and their respective utilities. Each row in the table represents a different consumption bundle, displaying the number of cups of coffee and pieces of cake. The "Total Utility" column indicates the total utility achieved for each consumption bundle. By selecting the row corresponding to 1 cup of coffee and 4 pieces of cake, we find a total utility of 126. This indicates that Becky would derive a total utility of 126 from this particular combination of coffee and cake, suggesting that it would be a favorable choice for her meeting with her office mate.

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(a) The original price of the shoes was $100.

(b) You saved $37.

(c) You spent 63/100 = 0.63 or 63% of the original price.

Answer:

x(t) = 37cos(70o)t and y(t) = –16t2 + 37sin(70o)t

Step-by-step explanation:

If the t-test statistic value is greater than the critical value at a 5% significance level, then we reject the null hypothesis, and it means that there is a significant relationship between Y and X at 5% significance level.

Explanation:

In order to test if β=1 for the regression model Y=α+βX+u, at a significance level of 5%, the following procedure must be followed:

Step-by-step procedure for testing if β=1 at significance level of 5%

1. Null and Alternative Hypotheses

Null Hypothesis (H0): β ≠ 1

Alternative Hypothesis (H1): β = 1

2. Select the level of significance

The level of significance is given as 5%.

The level of significance is the threshold value beyond which a null hypothesis can be rejected.

3. The test statistics to be used

When testing the null hypothesis at 5% significance level, t-test statistics can be used to make statistical judgement.

                           t = (β - 1) / SE(β)

Where, SE(β) = standard error of β

4. Make the Statistical Judgement

Using the t-test statistic value, the conclusion for rejecting or failing to reject the null hypothesis can be reached.

In this case, the null hypothesis will be rejected if the calculated t-statistic value is greater than the critical value.5.

Therefore, we can conclude that if the t-test statistic value is greater than the critical value at a 5% significance level, then we reject the null hypothesis, and it means that there is a significant relationship between Y and X at 5% significance level.

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(a) There can be a maximum of 18 teams.

(b) The largest possible number of teams is 18, and there will be a total of 19 players on each team.

Given information:

In a local, recreational soccer league there are 252 men and 90 women signed up to play. The organizers need to make sure that everyone is on a team, the teams are the same size, each team has the same number of males; and each team has the same number of females.

(a) To find the largest possible number of teams, we need to divide the players (252 men and 90 women) into teams, where each team has the same number of males and females. Let's find the GCD (greatest common divisor) of 252 and 90:

GCD of 252 and 90 = GCD (252,90) = 18.

Therefore, there can be a maximum of 18 teams.

(b) Since the number of teams is 18, and we have 252 men and 90 women, there will be a total of 342 players.

Now, we need to divide these 342 players into 18 teams. Each team must have an equal number of males and females. Number of males = 252, Number of females = 90.

To divide the players equally into teams, we need to find the number of males and females that can be in one team.

Number of males in one team = 252/18 = 14

Number of females in one team = 90/18 = 5

Therefore, each team will have 14 males and 5 females, and there will be a total of 19 players on each team (14 + 5).

Thus, the largest possible number of teams is 18, and there will be a total of 19 players on each team.

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The firm's profit margin is 7.11%.

Given data:

Asset Turnover (ATO) = 1.9

Return on Assets (ROA) = 13.5%

Assets (A) = $8,940,000

The formula of Return on assets (ROA) is:

ROA = Net Income / Total Assets

OR ROA = Profit Margin × Asset Turnover

OR Profit Margin = ROA / Asset Turnover

Profit Margin = ROA / Asset Turnover=

13.5% / 1.9= 0.0711 or 7.11%.

Therefore, the company's profit margin is 7.11%.

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Answer:

20 people participated in the survey.

Answer:

Step-by-step explanation:

The easiest way is to graph both functions and see where they intersect.  The intersection is where f(x) = g(x).

f(x) = -x² - 3x + 6

g(x) = 2x² + 5x + 3

The Nakeisha needs to score 290 on Exam B to do equivalently well as she did on Exam A.

To find out how well Nakeisha must score on Exam B in order to do equivalently well as she did on Exam A, we need to use the z-score formula. Z-score is a measure of how many standard deviations a data point is from the mean of a dataset.

It can be calculated using the formula:(x - μ) / σwhere x is the data point, μ is the mean, and σ is the standard deviation.

First, we need to find the z-score for Nakeisha's score on Exam A using the formula:(x - μ) / σ = (775 - 750) / 25 = 1.00This means that Nakeisha's score on Exam A is 1 standard deviation above the mean.

To find out what score Nakeisha needs to get on Exam B to do equivalently well, we need to find the score that is 1 standard deviation above the mean of Exam B.

We can do this by multiplying the standard deviation of Exam B by the z-score and adding it to the mean of Exam B.μB + σB * z = 250 + 40 * 1.00 = 290

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Answer:

D

Step-by-step explanation:

A: Not A. It can be graphed. It is a vertical line where x = 3. Every point must have an x value of 3. (3,4), (3,0), (3.- 6) are all on x = 4. It can be graphed, but it is not a function.

B:  Not B. It is not a function at all. To be a function, it can only have 1 y value associated with it.

C: It's not a linear function because it is not a function.

D is your answer

Answer:

(x + 10)(x + 2)

Step-by-step explanation:

x² + 12x +20

(x + 10)(x + 2)

Answer:

(x+2)(x+10)

Step-by-step explanation:

The given trinomial needs to be factorised. On the basis of degree of power of polynomial it can also be called a quadratic polynomial . General form is ax² + bx + c .

= x² + 12x + 20

= x² + 10x + 2x + 20

= x ( x + 10 ) + 2( x + 10 )

= ( x + 2)( x +10)

The polynomial f(x) = x + 27x³ + 3x² + 18x + 6 is irreducible over Q.

Eisenstein's Criterion is a test used to determine the irreducibility of a polynomial over the rational numbers (Q).

According to Eisenstein's Criterion, for a polynomial to be irreducible over Q, there must exist a prime number p that divides all coefficients except the leading coefficient, and p² does not divide the constant term.

In the given polynomial f(x) = x + 27x³ + 3x² + 18x + 6, we can see that all coefficients except the leading coefficient (1) are divisible by the prime number 3. Additionally, 3² does not divide the constant term (6). Therefore, Eisenstein's Criterion is satisfied, and we can conclude that f(x) is irreducible over Q.

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Answer:

m∠A is 89°

Step-by-step explanation:

By circle theorem, two or more inscribed angles subtended by the same arc are equal

Therefore, from the diagram, we have;

Angle (5·x - 1)° and angle (4·x + 17)° subtends the same arc DC

∴ (5·x - 1)° = (4·x + 17)°

We can write the angles as follows since they are both in degrees

(5·x)° - 1° = (4·x)° + 17°

(5·x - 4·x)° = 17° + 1°

x = 18°

m∠A = (5·x - 1)°

∴ m∠A = (5 × 18 - 1)° = (90 - 1)° = 89°

m∠A = 89°.

Answer:

It's A don't listen to the other guy

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

edg 22

1) The transition probability of the process (Yn) depends only on the current state (x, y) and the next state (x', y'), which satisfies the Markov property, hence, (Yn) is a Markov chain.

The transition matrix of the process (Yn) is given by:
II(x,y;x',y') = P(Yn+1 = (x', y') | Yn = (x, y)) = II(x, x') * II(y, y')

2) The Markov chain (Yn) has a unique stationary distribution, (Yn) is given by:
P(Y∞ = (x, y)) = II(x, y) * II(x, y) for all (x, y) € E x E.

1. A Markov chain is a probabilistic model of a system that moves through different states over time.

The model is based on the concept of a Markov process.

A Markov chain is defined by its state space, which is the set of possible states it can be in at any point in time.

The transition matrix of a Markov chain is a matrix that describes the probabilities of moving from one state to another.
In this case, let (Xn) be a Markov chain on a finite state space E with transition matrix II: EXE → → [0, 1].

Suppose that there exists a k EN such that II (x, y) > 0 for all x, y € E. For n € Z+ set Y₁ = (Xn, Xn+1).
We need to show that (Yn) is a Markov chain on E x E, and determine its transition matrix.
To show that (Yn) is a Markov chain, we need to show that it satisfies the Markov property, which states that the probability of moving from one state to another depends only on the current state and not on the history of the process.
Let us consider the transition probabilities of the process (Yn).

The probability of moving from (x, y) to (x', y') in one step is given by:

P(Yn+1 = (x', y') | Yn = (x, y)) = P(Xn+1 = x', Xn+2 = y' | Xn = x, Xn+1 = y)

= P(Xn+1 = x' | Xn = x, Xn+1 = y) * P(Xn+2 = y' | Xn+1 = y, Xn+1 = x')

= II(x, x') * II(y, y')

2. We need to determine if the distribution of Yn has a limit as n → ∞.

If so, we need to determine the limit.
The distribution of Yn is given by the joint distribution of (Xn, Xn+1).

Since (Xn) is a Markov chain with transition matrix II, the joint distribution of (Xn, Xn+1) depends on the initial distribution of X0 and the transition matrix II.
We need to determine if the distribution of Yn converges to a limit distribution as n → ∞.

If it does, then the limit distribution is the stationary distribution of the Markov chain (Yn).
If the Markov chain (Yn) is irreducible and aperiodic, then it has a unique stationary distribution.

In this case, since (Xn) has a transition matrix with positive elements, it is irreducible.

Therefore, (Yn) is also irreducible.
The Markov chain (Yn) is aperiodic if :

P(Yn = (x, y)) > 0} = 1 for all (x, y) € E x E.

Since II(x, y) > 0 for all x, y € E, the Markov chain (Xn) is aperiodic. Therefore, (Yn) is also aperiodic.
Hence, the Markov chain (Yn) has a unique stationary distribution.

The stationary distribution of (Yn) is the product of the stationary distributions of (Xn) and (Xn+1), which are the same since (Xn) is time-homogeneous.

Therefore, the stationary distribution of (Yn) is given by:
P(Y∞ = (x, y)) = II(x, y) * II(x, y) for all (x, y) € E x E.

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Answer: 1. No because there are no numbers to solve it. 2. Yes, has numbers.  3.Yes, has numbers. 4.No because there are no numbers to solve it.  5. not sure  6.not sure  7. not sure  8.not sure  9. not sure

Step-by-step explanation:

A tax of 7.5 percent was added to the product to make it equal to 27.95.

We can form a total of 42 stacks of 8 cans each from the 7 boxes of cat food received by the pet store.

Now, We can use a bar model to represent the total number of cans and the number of stacks that can be formed.

First, let's find the total number of cans:

7 boxes x 48 cans/box = 336 cans

Now, let's use a bar model to represent this total:

| 336 cans of food  |

Next, we want to find how many stacks of 8 cans we can form. We can use a separate bar model to represent the size of each stack:

| 42 stacks of 8 cans each |

Hence, The number of stacks that can be formed, we need to divide the total number of cans by the number of cans in each stack:

336 cans ÷ 8 cans/stack = 42 stacks

So the final bar model looks like this:

| 336 cans of food  | = | 42 stacks of 8 cans each |

Therefore, we can form a total of 42 stacks of 8 cans each from the 7 boxes of cat food received by the pet store.

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Answer:

0.66

Step-by-step explanation:

1.00 - 0.34 = 0.66

Yes, in a group of 700 people, there must be two people with the identical first and last initials.

Because there are 26 distinct letters in the English alphabet, there are 26 × 26 = 676 potential combinations of two initials. According to the pigeonhole principle, at least two people in a group of 700 share the same initials. (Here: persons are pigeons, combinations of two initials are pigeonholes).

Note that in alphabets with 27 or more letters, this is no longer valid because there are 27 × 27 = 729 > 700 options for the initials.

If we try to assign a distinct combination to each individual in the group, we can only do so for the first 676 persons, leaving the remaining 24 with the same first and last initial. As a result, the answer is yes, there must be two people with the same first and last initials.

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Correct question:

In a group of 700 people, must there be 2 who have the same first and last initials? Why?

The height of the vertical walls is 10 ft=480 sq ft. The triangles that make up the roof are isosceles triangle 80 sq ft. The greenhouse uses 504 square feet of glass to construct.

To calculate the amount of glass used to make the greenhouse, to determine the total surface area of the glass panels.

The greenhouse consists of four vertical rectangular walls and two triangular roof sections.

The total surface area of the vertical walls calculated by adding the areas of each wall. Since the greenhouse is rectangular, the height of the walls is 10 ft, and the total width of the walls (including the door) is 16 ft + 8 ft = 24 ft.

Area of each wall = height x width

Area of vertical walls = 2 x (height x width) = 2 x (10 ft x 24 ft) = 480 sq ft

Each roof section forms an isosceles triangle. The base of each triangle is the width of the greenhouse, which is 16 ft. The height of the triangle is the difference between the total height of the greenhouse (15 ft) and the height of the vertical walls (10 ft), which is 5 ft.

Area of each triangular roof section = 0.5 x base x height

Area of triangular roof = 2 x (0.5 x 16 ft x 5 ft) = 80 sq ft

The door is not made of glass, so we need to subtract its area from the total.

Area of the door = width x height = 8 ft x 7 ft = 56 sq ft

calculate the total glass surface area by subtracting the area of the door from the sum of the vertical walls and triangular roof sections.

Total glass surface area = (Area of vertical walls + Area of triangular roof) - Area of the door

Total glass surface area = (480 sq ft + 80 sq ft) - 56 sq ft

Total glass surface area = 504 sq ft

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If m and n are relatively prime, the numerator (an + bm) and denominator (mn) have no common factors other than 1, and therefore, (an + bm)/(mn) is in lowest terms.

To prove that (an + bm)/(mn) is in lowest terms if and only if m and n are relatively prime, we will need to establish two separate claims:

Claim 1: If (an + bm)/(mn) is in lowest terms, then m and n are relatively prime.

Claim 2: If m and n are relatively prime, then (an + bm)/(mn) is in lowest terms.

Proof of Claim 1:

Let's assume that (an + bm)/(mn) is in lowest terms. This means that the numerator (an + bm) and the denominator (mn) have no common factors other than 1.

Suppose m and n are not relatively prime, which means they have a common factor greater than 1.

Let's say that factor is d, where d > 1. Then we can express m and n as follows: m = dx and n = dy, where x and y are integers.

Now, we rewrite the numerator (an + bm) as follows:

an + bm = an + b(dx) = n(a + bx/d)

Since m = dx and n = dy, we have (an + bm)/(mn) = (n(a + bx/d))/(dx * dy) = (a + bx/d)/(xy).

We can see that both the numerator (a + bx/d) and the denominator (xy) have the factor d.

This contradicts our assumption that (an + bm)/(mn) is in lowest terms, as they have a common factor greater than 1.

Therefore, m and n must be relatively prime.

Proof of Claim 2:

Now, let's assume that m and n are relatively prime, which means they have no common factors other than 1.

To show that (an + bm)/(mn) is in lowest terms, we need to demonstrate that its numerator and denominator have no common factors other than 1.

Let's suppose that the numerator (an + bm) and the denominator (mn) have a common factor d, where d > 1.

This implies that d divides both an + bm and mn.

Since d divides mn, we can express m and n as follows: m = dx and n = dy, where x and y are integers.

Now, let's rewrite the numerator (an + bm) as follows:

an + bm = an + b(dx) = n(a + bx/d)

We can see that d divides both n and the expression (a + bx/d). Therefore, d also divides the numerator (an + bm).

However, we initially assumed that (an + bm)/(mn) is in lowest terms, which means the numerator and denominator have no common factors other than 1. This contradicts the assumption that they have a common factor d > 1.

Thus, if m and n are relatively prime, the numerator (an + bm) and denominator (mn) have no common factors other than 1, and therefore, (an + bm)/(mn) is in lowest terms.

By proving both Claim 1 and Claim 2, we have established that (an + bm)/(mn) is in lowest terms if and only if m and n are relatively prime.

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Answer:

the pyramid is 80 ft² and the rectangular prism is 240 ft²

Step-by-step explanation:

1. Graphical output from the regression analysis is as follows:

The results output from the regression analysis is as follows:

2. as the year increases, TB incidence decreases.

3. The slope is -903.1.

This means that for every one-unit increase in a year, the TB incidence decreases by 903.1 cases.

4. The test statistic is -14.16, with a p-value of less than 0.0001.

Since the p-value is less than 0.05, we can reject the null hypothesis and conclude that there is a significant relationship between year and TB incidence.

5. Possible reasons for the decrease in the incidence of TB include better treatment and prevention measures, as well as increased public awareness and education about the disease.

6. The 95% confidence interval for this predicted value is (25,433.2, 35,125.6).

7. This confidence interval tells us that we are 95% confident that the true number of TB cases in 1980 falls between 25,433.2 and 35,125.6.

1. Regression analysis:

First of all, to make sure that the simple random sample is normally distributed and has a constant variance, a histogram was created from the data set (i.e., TB incidence).

After checking that the assumption of normality was satisfied, a regression analysis was performed.

Graphical output from the regression analysis is as follows:

The results output from the regression analysis is as follows:

2. Describe the relationship and state or paste the correlation coefficient

The correlation coefficient is -0.745, indicating a moderately strong negative relationship between TB incidence and year.

This can also be observed from the graph; as the year increases, TB incidence decreases.

3. What is the slope? Interpret it

The slope is -903.1.

This means that for every one-unit increase in year, the TB incidence decreases by 903.1 cases.

4. State the test statistic and p-value from your regression analysis. State the null and alternative in words and equations.

Based on these results, what do you conclude?

The null hypothesis is that the slope is equal to zero (i.e., no relationship between year and TB incidence).

The alternative hypothesis is that the slope is not equal to zero (i.e., there is a relationship between year and TB incidence).

The test statistic is -14.16, with a p-value of less than 0.0001.

Since the p-value is less than 0.05, we can reject the null hypothesis and conclude that there is a significant relationship between year and TB incidence.

5. Based on the results above, can we conclude that time is causing the incidence of TB to decrease? Why or why not? Explain your thoughts, and what are possible reasons for the decrease in incidence of TB.

Yes, we can conclude that time is causing the incidence of TB to decrease.

This is because the slope is negative and statistically significant, indicating that as the year increases, the TB incidence decreases.

Possible reasons for the decrease in the incidence of TB include better treatment and prevention measures, as well as increased public awareness and education about the disease.

6. Perform the appropriate analysis to determine the 95% confidence interval for the number of cases of TB for 1980. Paste results.

Using the regression equation, the predicted value for 1980 is 30,279.4 cases.

The 95% confidence interval for this predicted value is (25,433.2, 35,125.6).

7. What is this confidence interval telling you?

This confidence interval tells us that we are 95% confident that the true number of TB cases in 1980 falls between 25,433.2 and 35,125.6.

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Answer:

19 cookies

Step-by-step explanation:

200/8 = 25

25 grams of flour in each cookie.

480/25 = 19.2

Rosie can make up to 19 cookies with 480g of flour

Answer:

The greatest number of cookies Rosie can make is 19 cookies.

Step-by-step explanation:

200g = 8 cookies

400g = 16 cookies

475g = 19 cookies

you only have 480 g of flour and 1 cookie uses 25 g of flour.

Your Welcome!

Answer:

7. 9

8. 6.7

9. 12.2

10. 7.6

11. 7.3

12. 6.3

Step-by-step explanation:

7. 8^2+4^2=x^2

64+16=x^2

80=x^2

√80=√x^2

8.9=x

Round up

9=x

8. 6^2+3^2=x^2

36+9=x^2

45=x^2

√45=√x^2

6.7=x

9. 7^2+10^2=x^2

49+100=x^2

149=x^2

√149=√x^2

12.2=x

10. 3^2+7^2=x^2

9+49=x^2

58=x^2

√58=√x^2

7.6=x

11. 7^2+2^2=x^2

49+4=x^2

53=x^2

√53=√x^2

7.28=x

Round up

7.3=x

12. 6^2+2^2=x^2

36+4=x^2

40=x^2

√40=√x^2

6.3=x

Hope this helps

Answer:

7) X = a^2 + b^2 = c^2

X = (4^2) + (8^2) = c^2

X = 80^2 = c^2

X = √80 = 8.944

X = 8.9 = c^2

8) X = a^2 + b^2 = c^2

X = (6^2) + (3^2) = c^2

X = 45^2 = c^2

X = √45 = 6.708

X = 6.7 = c^2

9) X = a^2 + b^2 = c^2

X = (7^2) + (10^2) = c^2

X = 149^2 = c^2

X = √149 = 12.206

X = 12.2 = c^2

10) X = a^2 + b^2 = c^2

X = (3^2) + (7^2) = c^2

X = 58^2 = c^2

X = √58 = 7.615

X = 7.6 = c^2

11) X = a^2 + b^2 = c^2

X = (7^2) + (2^2) = c^2

X = 53^2 = c^2

X = √53 = 7.280

X = 7.3 = c^2

12) X = a^2 + b^2 = c^2

X = (2^2) + (6^2) = c^2

X = 40^2 = c^2

X = √40 = 6.324

X = 6.3 = c^2

Step-by-step explanation:

X = a^2 + b^2 = c^2

X and c^2 = missing side

a^2 and b^2 = the two legs of the triangle (the mesurments of the sides that are given)

c^2 = hipatanouse

The formula is called Pythagromtherom (a^2 + b^2 = c^2)

Answer: 9. 54; 10. 220; 11. 71; 12. 262

Step-by-step explanation: Chord and tangent intersection angle is half the arc measure or circle, and inscribed angles are also half the included arc measure