Please help me asap!
Answers
Answer:
24 units
Step-by-step explanation:
Given is a circle with two chord BE and CD
BE and CD intersect at A
By circle chords intersection theorem we have
DA*AC = EA*AB
i.e. 8(15) = 5(AB)
Divide by 5 both the sides
AB =8(15)/5 = 8(3) = 24 units
Verify:
Let us check now whether chord intersection theorem is satisfied.
DA*AC = 8(15) = 120
EA*AB = 5(24) = 120
Since these two equal, we verify that answer is right.
Related Questions
In the past, 44% of those taking a public accounting qualifying exam have passed the exam on their first try. Latterly, the availability of exam preparation books and tutoring sessions may have improved the likelihood of an individual’s passing on his first try. In a sample of 250 recent applicants, 130 passed on their first attempt. At the 0.05 level of significance, what is the calculated value of test statistic? (Specify your answer to the 2nd decimal.)
Suppose that a digitized TV picture is to be transmitted from a source that uses a matrix of 480 * 500 picture elements (pixels), where each pixel can take on one of 32 intensity values. Assume that 30 pictures are sent per second. (This digital source is roughly equivalent to broadcast TV standards that have been adopted.) Find the source rate R (bps).
Three baskets weigh 120 pounds how many pounds are 4 baskets
What is the area of an isosceles trapezoid, if the lengths of its bases are 16 cm and 30 cm and the diagonals are perpendicular to each other?
Answers
Answer:
see below
Step-by-step explanation:
It can be convenient to graph the given point, then identify additional points on the line based on the slope. The slope of 2/5 tells you the line will have a rise of 2 units for each run of 5 units.
Answers
The bis which is likely for the given question by the researcher is response bias.
Given that,
A researcher calls 1,800 randomly chosen residential telephone numbers, and then asks to speak with an adult member of the household.
The researcher asks, “How many 3D movies have you watched in a movie theater in the past 12 months?”.
Response bias happens when the people who needs to respond does this in an inaccurate way or wrongly.
Here almost no people will be correctly remembering the exact number of movies they watched in a year.
Also, they may be volatile to social desirability and may say less or more number of movies.
So there happens a response bias.
Hence the correct bias is response bias.
Learn more about Response Bias here :
#SPJ1
a. What is the probabilty that a random sample of n = 40 oil changes results in a sample mean time less than 15 minutes?
b. Suppose the manager agrees to pay each employee a $50 bonus if they meet a certain goal. On a typical Saturday, the oil-change facility will perform 40 oil changes between 10 A.M. and 12 P.M. Treating this as a random sample, there
would be a 10% chance of the mean oil-change time being at or below what value? This will be the goal established by the manager.
Answers
Answer:
(a) Probability that a random sample of n = 45 oil changes results in a sample mean time < 10 minutes i=0.0001.
(b) The mean oil-change time is 15.55 minutes.
Step-by-step explanation:
Let us denote the sample mean time as x
From the Then x = mean time = 16.2 minutes
The given standard deviation = 3.4 minutes
The value of n sample size = 45
CHECK THE ATTACHMENT FOR DETAILED EXPLANATION
Answers
Answer:
135 times
Step-by-step explanation:
Answer:
135
Step-by-step explanation:
Answers
Answer: a) 0.8413, b) 0.9987.
Step-by-step explanation:
Since we have given that
Mean = 3 pounds
Standard deviation = 0.25 pounds
n = 28 bricks
So, (a) What is the probability that all the bricks in the sample exceed 2.75 pounds?
b) What is the probability that the heaviest brick in the sample exceeds 3.75 pounds?
Hence, a) 0.8413, b) 0.9987.
Answers
Answer:
-20, -19
Step-by-step explanation:
The average of the two numbers is -39/2 = -19.5. The smaller number is 0.5 less than this, -20, and the larger number is 0.5 more than -19.5, so is -19.
_____
Comment on the problem and solution
I find that working consecutive integer problems is often simplified by working with the average value of those integers:
- the average of two consecutive odd integers is the even integer between them
- the average of two consecutive even integers is the odd integer between them
- the average of an odd number of integers of the same type (consecutive, consecutive odd, consecutive even) is the middle one
- The average of an even number of consecutive integers is the "half" number between the middle two (as in this problem).