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horsena [70]
3 years ago
5

SIMPLIFY AND EXPLAIN

Mathematics
1 answer:
nlexa [21]3 years ago
4 0

Step-by-step explanation:

1/u f church h cfgur5 043925246u 9 f z book no

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Geometry questions today!
Vladimir79 [104]

Answer:

<u>B, C, E - correct</u>

  • A. ΔLHK ≅ ΔJHK - <u>incorrect</u>, central angles are not confirmed congruent
  • B. ML ≅ JK - <u>correct</u>, as opposite angles are congruent
  • C. MLK ≅ LKJ - <u>correct</u>, as MLK = ML + LK and LJK = JK + LK, the first parts are congruent and the second parts are same
  • D. ΔLHM ≅ ΔLHK - <u>incorrect</u>, central angles are not confirmed congruent
  • E. ∠JH ≅ ∠LHM - <u>correct</u>, SAS- two sides are radius, the central angles are congruent
5 0
2 years ago
Help please i realllyy need help
vredina [299]
2 and 5/8: You would go from the number the fraction is closest to, and then add the fraction itself.
3 0
3 years ago
Read 2 more answers
HELP!! Check the following sets that are closed under the given operations!!!!
Nonamiya [84]

Answer:

DONDODA

Step-by-step explanation:

5 0
3 years ago
Researchers are investigating the effectiveness of leg-strength training on cycling performance. A sample of 7 men will be selec
ruslelena [56]

Answer:

A. The interval will be narrower if 15 men are used in the sample.

Step-by-step explanation:

Hello!

When all other things remain the same, which of the following statements about the width of the interval is correct?

A. The interval will be narrower if 15 men are used in the sample.

B. The interval will be wider if 15 men are used in the sample.

C. The interval will be narrower if 5 men are used in the sample.

D. The interval will be narrower if the level is increased to 99% confidence.

E. The interval will be wider if the level is decreased to 90% confidence.

Consider that the variable of interest "Xd: Difference between the peak power of a cyclist before training and after training" has a normal distribution. To construct the confidence interval for the population mean of the difference you have to use a pooled t-test.

The general structure for the CI is "point estimate"±" margin fo error"

Any modification to the sample size, sample variance and/or the confidence level affect the length of the interval (amplitude) and the margin of error (semiamplitude)

The margin of error of the interval is:

d= t_{n-1;1-\alpha /2} * (Sd/n)

1) The sample size changes, all other terms of the interval stay the same.

As you can see the margin of error and the sample size (n) have an indirect relationship. This means, that when the sample size increases, the semiamplitude decreases, and when the sample size decreases, the semiamplitude increases.

↓d= t_{n-1;1-\alpha /2} * (Sd/↑n)

↑d= t_{n-1;1-\alpha /2} * (Sd/↓n)

Correct option: A. The interval will be narrower if 15 men are used in the sample.

2) The confidence level has a direct relationship with the semiamplitude of the interval, this means that when the confidence level increases, so do the semiamplitude, and if the level decreases, so do the semiamplitude:

↓d= ↓t_{n-1;1-\alpha /2} * (Sd/n)

↑d= ↑t_{n-1;1-\alpha /2} * (Sd/n)

I hope it helps!

4 0
3 years ago
If UW = 9x – 9, what is UW in units?
Tju [1.3M]
I will answer this question to the best of my ability, because you have not provided a value of x to plug in.


UW is always equal to 9x-9 or 9(x-1) whenever x is a real number.  By plugging in x, we can get the value.  For example, if x was 4, we plug in x, giving us 9*4-9=36-9=27 units or 9(4-1)=9(3)=27 units
Don't forget to include units when you complete your answer!

Hope this helps!  I did as much as I could!
5 0
3 years ago
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