Answer:
-8 (or) 5 and 5 (or) -8
Step-by-step explanation:
Let one of the numbers = x
Let other number = y
As the sum of two numbers = -3
x + y = -3
x = -3-y
As the the result of multiplication = -40
xy = -40
(-3-y)*y = -40
-3y-y² = -40
-y²-3y+40 = 0
-(y²+3y-40) = 0
-(y+8)(y-5) = 0
(-y-8)(y-5) = 0
-y-8 = 0 (or) y-5 = 0
-y = 8 (or) y = 5
y = -8 (or) y = 5
when y = -8
x = -3-y
x = -3-(-8)
x = -3+8
x = 5
when y = 5
x = -3-y
x = -3-5
x = -8
Solve the compound inequality
The solution to the given compound inequality include the following:
x ≥ 4.5
x > -35/4
How to write and determine the solution to the compound inequality?Based on the information provided above, you are required to solve the following compound inequality;
2x ≥ 9
By dividing both sides of the inequality by 2, we have the following:
x ≥ 9/2
x ≥ 4.5
-4/5(x) - 6 > 1
By adding 6 to both sides of the inequality, we have the following:
-4/5(x) - 6 + 6 > 1 + 6
-4/5(x) > 7
By multiplying both sides of the given inequality by -5/4, we have the following ;
-4/5(x) × -5/4 > 7 × -5/4
x > -35/4
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If a₁ is 7, r is 2 and an is 3584, what is the value of n?
The value of n in the geometric sequence is 10.
How to solve geometric progression?The first term of the sequence is 7, the common ratio is 2 and the nth term is 3584. Therefore, the value of n can be found as follows:
using geometric progression formula,
aₙ = arⁿ⁻¹
where
a = first termr = common ration = number of termsTherefore,
3584 = 7 × 2ⁿ⁻¹
divide both sides by 7
2ⁿ⁻¹ = 3584 / 7
2ⁿ⁻¹ = 512
2ⁿ⁻¹ = 2⁹
n - 1 = 9
n = 9 + 1
Therefore,
n = 10
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what is the resolution
By reducing the denominator each time, the given real-number's [tex]1-\frac{1}{1-\frac{1}{1-\frac{1}{2}}}[/tex]simplification yields the answer of 2, which is 2.
What are real-numbers?They display the value of something actual, which is why they are not referred to as "Real". All numbers are part of the real number system, which is a collection of all numbers. Every number you have ever used, ever since you were old enough to count, is a component of the real number system. The real number system divides the numbers into two fundamental groups. Both sets of numbers fall into two categories: rational and irrational. Natural numbers, whole numbers, integers, ratios of two integers, decimal numbers that terminate, and decimal numbers with recurrent digit patterns all fall within the category of rational numbers.
Given expression is: [tex]1-\frac{1}{1-\frac{1}{1-\frac{1}{2}}}[/tex]
[tex]1-\frac{1}{1-\frac{1}{\frac{1}{2}-\frac{1}{2}}}[/tex] Equivalent rational number of 1 with denominator 2 = 2/2
[tex]1-\frac{1}{1-\frac{1}{\frac{1}{2}}}[/tex] subtraction 2/2 - 1/2 = 1/2
[tex]1-\frac{1}{1-2}[/tex] reciprocal of 1/2 = 2
[tex]1-\frac{1}{-1}[/tex] subtraction of 1-2=-1
1 - (-1) Writing -1/1 = -1
1+1
2
The value of given expression is [tex]1-\frac{1}{1-\frac{1}{1-\frac{1}{2}}}=2[/tex]
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1. A service station charges anons
aqsinstallation fee of $84 and a set price
for each new tire. They charge a
total of $791 for four new tires and
installation.
Part A
Let t represent the price of one tire.
Write an equation that represents the
situation.
Part B
What is the price, in dollars, of one
tire?
Part A:
Let's start by setting up the equation. We know that the service station charges an installation fee of $84 and a set price for each new tire. If t represents the price of one tire, then the total cost of four tires and installation can be expressed as:
4t + 84 = 791
Part B:
Now we can solve for t to find the price of one tire:
4t + 84 = 791
4t = 707
t = 176.75
Therefore, the price of one tire is $176.75.
you spin a spinner with 5 equal sections numbered 1-5 and then toss a standard number cube. what is the probability of landing on a 4 on the spinner and tossing a prime number on the number cube?
A. 1/5
B. 1/2
C. 2/7
D. 1/10
Answer: D. 1/10
Step-by-step explanation:
With there being 5 sections on the spinner and only one number wanted to be spun, the probability of that would be 1/5.
On a dice, 3 of the numbers on a cube are prime (1, 3 and 5). So the probability would be 3/6 or 1/2.
1/5 x 1/2 = 1/10, so the probability of spinning a 4 and rolling a prime number would be 1/10, or 10%
In Spring 2017, data was collected from a random selection of STA 2023 students. One of the questions asked how many hours they had exercised in the past 24 hours.For the 39 randomly selected upperclassmen, the sample mean was 0.76 and sample standard deviation was 0.75.For the 35 randomly selected underclassmen, the sample mean was 0.60 and the sample standard deviation was 0.73.What is the point estimate of the difference in the population mean exercised between underclassmen and upperclassmen?
The point estimate of the difference in the population mean exercised between underclassmen and upperclassmen is 0.16 hours.
In this case, we are estimating the difference in population means between two groups - upperclassmen and underclassmen. The point estimate is calculated by subtracting the sample mean of the underclassmen from the sample mean of the upperclassmen, which gives us
0.76 - 0.60 = 0.16.
the point estimate of the difference in population mean exercised between underclassmen and upperclassmen is 0.16 hours, which was calculated by subtracting the sample mean of underclassmen from the sample mean of upperclassmen.
Point Estimate = (Sample Mean of Upperclassmen) - (Sample Mean of Underclassmen)
Point Estimate = (0.76) - (0.60)
Point Estimate = 0.16
Hence, the point estimate of 0.16 suggests that, on average, upperclassmen exercised 0.16 hours more than underclassmen in the past 24 hours. This is a rough estimate of the difference between the two population means based on the provided sample data.
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Which of the following is something that should not be a consideration when choosing a health care plan? a. annual premiums to be paid by the insured individual and family b. deductible or co-pay to be paid by the insured individual and family c. total coverage received by insured individual and family d. the coverage the insured individual and family already receive in auto insurancein 1894, the populist vote decreased in rural areas but increased substantially among the urban workers.
The coverage the insured individual and family already receive in auto insurance should not be a consideration when choosing a health care plan.
The other options - annual premiums, deductible or co-pay, and total coverage - are important factors to consider when selecting a health care plan. As for the additional information provided about the populist vote in 1894, it is unrelated to the question and does not affect the answer.
When choosing a health care plan, the factor that should not be a consideration is d. the coverage the insured individual and family already receive in auto insurance. Factors such as annual premiums, deductibles, co-pays, and total coverage received are important in evaluating a suitable health care plan, while auto insurance coverage is unrelated to health care needs.
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URGENT - Will also give brainliest to simple answer
A circle of radius 12 units is divided into 8 congruent slices - what is the arc of each slice?
Answer:
3π
Step-by-step explanation:
We Know
The arc of the circle is the same thing as the circumference.
Circumference of circle = 2 · r · π
r = 12 units
Let's solve
2 · 12 · π = 24π
It is divided into 8 congruent slices - what is the arc of each slide?
24π ÷ 8 = 3π
So, the arc of each slice is 3π
What is the age (in millions of years) of the basalt (unit m) if 0. 5 half-lives of 40k/40ar have elapsed, and the half life of 40k/40ar is 1. 3 billion years? (sig figs apply; scientific notation 10^9)
The age of the basalt (unit m) is approximately 1.14 x 10⁹ years years, if 0.5 half-lives of 40K/40Ar have elapsed and the half-life of 40K/40Ar is 1.3 billion years.
The age of the basalt can be calculated using the formula
age = (t₁/2 x loge(1 + (D/P)))/1.21 x 10⁻¹¹
where t₁/2 is the half-life of the radioactive isotope (in seconds), D is the ratio of the daughter isotope (in this case 40Ar) to the parent isotope (in this case 40K), and P is the initial ratio of the daughter isotope to the parent isotope.
In this case, we are given that
t₁/2 = 1.3 billion years = 4.1 x 10¹⁶ seconds (since 1 billion = 10⁹ and there are 31,536,000 seconds in a year)
0.5 half-lives of 40K/40Ar have elapsed, which means that D/P = 0.5 (i.e., half of the initial amount of 40K has decayed to 40Ar)
Plugging in these values, we get:
age = (4.1 x 10¹⁶ seconds x loge(1 + 0.5))/1.21 x 10⁻¹¹
= (4.1 x 10¹⁶ seconds x loge(1.5))/1.21 x 10⁻¹¹
= 1.14 x 10⁹ years
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You are building a triangular patio from a blueprint with base 8 in and height 11 in The base of the patio is going to be 16 ftWhat will be the height of the patio, h?
The calculated height of the patio, h will be 22 ft
What will be the height of the patio, h?From the question, we have the following parameters that can be used in our computation:
Blueprint with base 8 in and height 11
This means that
Ratio = 8 in : 11 in
So, we have
16 ft : height = 8 in : 11 in
Multiply by 2
So, we have the following representation
16 ft : height = 16 in : 22 in
By comparison, we have
height = 22 ft
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Find the value of x 170 and (8x+50)
The value of x from the given equation is 15.
The given equation is 8x+50=170
Here, the given equation can be solved as follows
8x+50=170
Transpose 50 to other side of the equation, we get
8x=170-50
8x=120
x=120/8
x=15
Therefore, the value of x from the given equation is 15.
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"Your question is incomplete, probably the complete question/missing part is:"
Find the value of x, in (8x+50)=170
secondary data should be gathered first because this type of information is less expensive to obtain. group of answer choices false true
The statement "secondary data should be gathered first because this type of information is less expensive to obtain" is actually false because it has already been collected, there are some important factors to consider.
Primary data is data that is collected specifically for the purpose of the research project at hand. This type of data can include surveys, interviews, experiments, and observations. On the other hand, secondary data is data that has already been collected by someone else for a different purpose.
Firstly, it's important to consider the quality of the data. Secondary data may not always be reliable or up-to-date, which could impact the accuracy of your research findings. In some cases, you may need to spend time and resources verifying the accuracy of the secondary data, which could end up being more expensive in the long run.
Additionally, it's important to consider the specific needs of your research project. Depending on your research question, primary data may be necessary to obtain the specific information you need. In other cases, secondary data may be sufficient.
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Pls answer asap!!!
The utility bills in a city of 5000 households are normally distributed with a mean of $180 and a standard deviation of $16. a. About how many utility bills were between $164 and $196? b. About how many bills were more than $212? c. About how many bills were less than $164? d. What is the probability that a household selected at random will have a utility bill between $164 and $180?
The solution is : 95% of the data lies between $54 and $86
Use the Empirical Rule.
The mean monthly utility bill for a sample of households in a city is $70, with a standard deviation of $8. Between what two values do about 95% of the data lie? (Assume the data set has a bell-shaped distribution.)
Given;
Mean x = $70
Standard deviation r = $8
Confidence level = 95%
To determine the range of the data, we will solve using the confidence level of 95%
Using the formula
x +/- zr/√n
Where r = standard deviation and n is the number of samples tested.
But since n is not given, and since the distribution is bell shaped and thus normal.
The emprical rule states it about 95% of the data is within 2 standard deviations from the mean.
x+/-2r
Substituting x and r
$70 +/-2(8)
$70 +/- $16
Which gives,
$54,$86
Therefore, 95% of the data lies between $54 and $86
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complete question:
The mean monthly utility bill for a sample of households in a city is $70, with a standard deviation of $8. Between what two values do about 95% of the data lie?
X1 and S 2 1 are the sample mean and sample variance from a population with mean µ1 and variance σ 2 1. Similarly, X2 and S 2 2 are the sample mean and sample variance from a second independent population with mean µ2 and variance σ 2 2. The sample sizes are n1 and n2, respectively. A) Show that X1 − X2 is an unbiased estimator of µ1 − µ2. B) Find the standard error of X1 − X2. How could you estimate the standard error?
a. X1 - X2 is an unbiased estimator of µ1 - µ2.
b. The standard error of X1 - X2 is √(S1²/n1 + S2²/n2).
A) To show that X1 − X2 is an unbiased estimator of µ1 − µ2, we need to show that the expected value of X1 − X2 equals µ1 − µ2.
E[X1 − X2] = E[X1] − E[X2] (since expectation is linear)
= µ1 − µ2 (since X1 and X2 are unbiased estimators of µ1 and µ2, respectively)
Therefore, X1 − X2 is an unbiased estimator of µ1 − µ2.
B) The variance of X1 − X2 can be calculated as:
Var[X1 − X2] = Var[X1] + Var[X2] (since X1 and X2 are independent)
= σ1²/n1 + σ2²/n2
The standard error of X1 − X2 is the square root of the variance:
SE(X1 − X2) = √(σ1²/n1 + σ2²/n2)
To estimate the standard error, we can use the sample standard deviations S1 and S2 as estimators of the population standard deviations σ1 and σ2, respectively. Therefore, the estimated standard error of X1 − X2 is:
SE(X1 − X2) ≈ √(S1²/n1 + S2²/n2)
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If the mean height is 180cm and the standard deviation is 4. What percentage of the population would lie between 176cm and 184cm?
A.50%
B.68%
C.95%
D.34%
Standard Deviation: Is a measure of how spread out values are in a data set compared to the mean. It is calculated by finding the square root of the variance, which is the average of the squared differences from the mean.
Mean: The average value of a set of numbers. It is calculated by summing up all the numbers in the set and dividing the result by the total number of numbers in the set.
Distribution Curve: is a bell shaped curve that displays the mean with a line down the center of the curve and standards deviations within standard deviations.
See attached file for model of curve, from: https://commons.wikimedia.org/wiki/File:Standard_deviation_diagram.svg
Given the mean and standard deviation we can use a general rule to determine the population between the given lengths.
Generally in a normal distribution:
68% of the data falls between -1σ and +1σ95% of the data falls between -2σ and +2σ99.75 of the data falls between -3σ and +3σ176 cm is 1 standard deviation less than the mean and 184 cm is 1 standard deviation greater than the mean. Using the general rules above, 68% of data falls between -1σ and +1σ. Therefore, the answer to this question would be B. 68%
Suppose set s1 is [1, 2, 5] and set s2 is [2, 3, 6]. After s1.addAll(s2), s1 is __________.
After set s1.addAll(s2), s1 is [1, 2, 5, 2, 3, 6].
After performing the operation s1.addAll(s2) on sets s1 [1, 2, 5] and s2 [2, 3, 6], the set s1 would become[1, 2, 5, 2, 3, 6].
To determine the value of s1, the following steps has to be taken:
1. Start with sets s1 [1, 2, 5] and s2 [2, 3, 6].
2. Apply the addAll operation with set s2: [2, 3, 6]
3. Add each element from set s2 to set s1, while avoiding duplicates (since sets cannot have duplicate elements).
4. Therefore, suppose if set s1 is [1, 2, 5] and set s2 is [2, 3, 6] then, after s1.addAll(s2), the set s1 becomes [1, 2, 5, 2, 3, 6].
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7 out of a group of 10 people are men. What percentage are men?
Answer:
70%
Step by step explanation:
100 POINTS PLEASE HELP ANSWER ALL QUESTIONS!!!!!!
Answer: for number 1 it is 4 and 5
For number 2 it is 7.6 and 7.7
Number 3 is c
Step-by-step explanation: (I don’t know the last one)
There is a billboard on the top of an office building. You stand 100 feet from the base of the building and you measure the angle of elevation to the bottom of the billboard as 18°. Similarly, you measure the angle of elevation to the top of the billboard as 26°.
The height of the billboard is approximately 13.8 feet.
How to calculate the heightFrom the information, there is a billboard on the top of an office building. You stand 100 feet from the base of the building and you measure the angle of elevation to the bottom of the billboard as 18°
We can use the tangent function to find x:
tan(18°) = x / 100 ft
x = 100 ft * tan(18°) ≈ 34.6 ft
tan(26°) = y / 100 ft
y = 100 ft * tan(26°) ≈ 48.4 ft
We can find the height of the billboard AB by subtracting x from y:
AB = y - x ≈ 13.8 ft
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There is a billboard on the top of an office building. You stand 100 feet from the base of the building and you measure the angle of elevation to the bottom of the billboard as 18°. Similarly, you measure the angle of elevation to the top of the billboard as 26°. Find the height of the billboard
solve for b. please help.
Applying the alternate interior angles theorem, the value of b in the image given is solved as: 62 degrees.
How to Solve for b Using the Alternate Interior Angles Theorem?The alternate interior angles theorem posits that if two angles are alternate interior angles, then they have equal angle measure or are congruent to each other.
Since the diagram shows two parallel lines, then the second unlabeled angle in the triangle formed would be equal to 49.5 degrees, based on the alternate interior angles theorem.
To solve for b, we have the following equation based on the triangle sum theorem:
b = 180 - 68.5 - 49.5
b = 62 degrees.
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Helene was given the following enlargement of a triangle.
10
cm
13 cm
12 cm
A
Figures not drawn to scale.
B
36 cm
What are the lengths of sides A and B?
A = 30 cm, B = 39 cm
O A = 30 cm, B = 48 cm
O A=20 cm, B = 26 cm
O A 20 cm, B = 33 cm
Option A is correct, the length of side A is 12 cm and length of side B is 42 cm in triangle ABC.
Two triangles are said to be similar if their corresponding angles are congruent and the corresponding sides are in proportion .
The blue triangle is similar to the red triangle.
The sides are proportional.
30/5=A/2=B/7
Now compare two of the equation
30/5=A/2
60/5=A
12=A
Length of A is 12 cm
and Now B/7=6
B=42
Hence, option A is correct, the length of side A is 12 cm and length of side B is 42 cm.
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Consider this right triangle.
X
36
Z
45
Y
Enter the measure of ZY, to the nearest degree.
Answer:
∠ Y ≈ 39°
Step-by-step explanation:
using the tangent ratio in the right triangle
tanY = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{XZ}{YZ}[/tex] = [tex]\frac{36}{45}[/tex] = [tex]\frac{4}{5}[/tex] , then
∠ Y = [tex]tan^{-1}[/tex] ( [tex]\frac{4}{5}[/tex] ) ≈ 39° ( to the nearest degree )
Find the exact value of of Sin (2theta) given tan theta = -7/24 and theta lies in quanderent 2
Given that tan(theta) = -7/24 and theta lies in quadrant 2, we find that sin(2theta) = 49sqrt(575)/576 using the double angle formula for sine, and the calculated values of sin(theta) and cos(theta) in the second quadrant.
We can use the fact that in quadrant 2, sine is positive and cosine is negative. Using the given value of tan(theta), we can calculate the value of sin(theta) and cos(theta), and then use the double angle formula for sine to find sin(2theta).
Let's first find sin(theta) and cos(theta):
tan(theta) = opposite / adjacent = -7/24
From the Pythagorean theorem, we know that opposite² + adjacent² = hypotenuse². We can choose a hypotenuse of 24, so that opposite is -7 and adjacent is -sqrt(24² - 7²) = -sqrt(575).
Therefore, sin(theta) = opposite/hypotenuse = -7/24 and cos(theta) = adjacent/hypotenuse = -sqrt(575)/24.
Now we can use the double angle formula for sine:
sin(2theta) = 2sin(theta)cos(theta) = 2(-7/24)(-sqrt(575)/24) = 49sqrt(575)/576.
So the exact value of sin(2theta) is 49sqrt(575)/576.
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A car rental company offers two plans for renting a car.
Plan A: $30 per day and 10¢ per mile
Plan B: $50 per day with free unlimited mileage
For what range of miles will Plan B save you money?
guys whats 24x 4 ??????????
Answer:
The answer to 24 times 4 is 96.
Step-by-step explanation:
To solve this, we must multiply the 4 in 24 by the 4 by itself. 4 times 4 is 16. So, the 6 is part of the answer. Place the 1 above the 2 in 24. Now, multiply 2 by 4 and add 1. You then get 9, the final number in the answer. So, the complete answer is 96.
Visual steps:
24
* 4
1
24
* 4
= 6
1
24
* 4
96
In short, the answer is 96.
find the mean, median, and model 19 , 18 , 13 , 55 , 15 , 16
Answer:
Mean= 22.666666666667
Median= 17
Model= No mode from what I have figured out
Step-by-step explanation:
A system of equations is given below
x+2y=5
2x+y=4
Which system of equations does not have the same solution?
Answer:
this system of equations does not have the same solution
Step-by-step explanation:
x+2y=5 2x + y=4
x+2y/2=5/2 2x/2 +y=4/2
x+y=2.5 x+y=2
Robo-advisors often have lower account minimums than traditional advisors, so you can start investing with less money. Make an inference: What do you think could be the impact of making investing more accessible?
If "Robo-advisors" have lower account minimums than "traditional-advisors", then the impact that investing accessible is that people will have more opportunity to invest.
Making investing more accessible by lowering account minimums through "Robo-advisors" can have a significant impact on individuals who previously could not afford "traditional-financial-advisors".
By removing this barrier, more people will have the opportunity to invest and grow their wealth, potentially leading to a more financially secure future.
The increased accessibility to investing lead to greater financial literacy and education, as more people are exposed to investing concepts and strategies.
So, the impact of making investing more accessible could be a positive one, by empowering more individuals to take control of their financial futures.
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SPORTS A soccer player kicks a ball with a velocity of 30 feet per second. The expression 30t – 16t2
represents the height of the ball after t seconds. What are the factors of this expression?
30t-16t^2=(_____)(___-____t)
The factors of the expression are 2t and (15 - 8t).
We have,
To find the factors of the expression 30t - 16t², we need to factor out the greatest common factor, which is 2t. We can then rewrite the expression as:
30t - 16t² = 2t (15 - 8t)
This is the factored form of the expression, with the factors being 2t, 15, and 8t.
Factor 2t accounts for the common factor of the two terms, while (15 - 8t) represents the remaining difference between the two terms.
Thus,
The factors of the expression are 2t and (15 - 8t).
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ON A is a chard of the circle. AC-CB, and the length of the radius is 5 ubits. AC 3 units and OC 4 units. Show that OC LAB and explain why OC passes through the centre O. 5
For the given circle, OC ⊥ AB and OC pass through the center O because it is the radius of the circle.
Consider two triangles OAC and OBC.
OC = OC = 4 units (Common side)
OA = OB = 5 units (Radii)
AC = BC (As C is the midpoint of AB)
As per the RHS rule, the ΔOAC is congruent to ΔOBC.
So, ∆OAC ≅ ∆OBC
Now, as per the RHS rule,
∠OMA = ∠OMB = 90°
Thus, conclude that OC ⊥ AB.
Since OC is the radius of the circle, and AB is a chord of the circle passing through the center, we can conclude that OC passes through the center O.
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The complete question is as follows:
AB is a chord of the circle. AC = CB and the length of the radius is 5 units. AC = 3 units and OC = 4 units. Show that OC ⊥ AB and explain why OC passes through the center O.
