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1 year ago

13

In Exercises 1 and 2, identify the bisector of ST. Then find ST.

1 answer:

Lemur [1.5K]1 year ago

3 0

Given:

A bisector is a line or point that divides a line in half. So point M is in the middle of the entire line ST.

The bisector would be the line MW

This means line MT is half of the enitre line ST so then the entire line is 19*2.

Answer:

ST = 38

Bisector is line MW

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Left-handedness occurs in about 12% of all Americans. Males are slightly more likely than females to be left-handed, with 13% of

FinnZ [79.3K]

Answer:

a)Both X and Y can be well approximated by normal random variables.

Step-by-step explanation:

For each individual, there are only two possible outcomes. Either they are right-handed, or they are left-handed. This means that we can solve this problem using concepts of the binomial probability distribution.

Binomial probability:

Probability of exactly x sucesses on n repeated trials, with probability p.

The binomial probability can be well approximated by normal random variables, using the expected value $E(X) = np$ and the standard deviation $\sigma = \sqrt{np(1-p)}$

Let X be the number of males (out of the 100) who are left-handed.

$n = 100$ and $p = 0.13$ . Can be well approximated.

Let Y be the number of females (out of the 80) who are left-handed.

$n = 80$ and $p = 0.11$ . Can be well approximated.

The correct answer is

a)Both X and Y can be well approximated by normal random variables.

5 0

3 years ago

PLEASE HELP I WILL MARK BRAINLIEST

Gnom [1K]

Answer:

is C 4,816

Step-by-step explanation:

four thousand is 4,000 eight hundred is 800 sixteen 16

4000+800+16=4,816

3 0

3 years ago

Simplify the following expression to an answer with only positive exponents.

yulyashka [42]

Answer:

The correct answer is (edit: b).

Step-by-step explanation:

$\frac{(2x^5y^7)(-5x^4z^{-5})}{y^{12}z^6}\\\\\frac{-10x^9y^7z^{-5}}{y^{12}z^6}\\\\\frac{-10x^9}{y^5z^{11}}$

3 0

3 years ago

Score Frequency

RUDIKE [14]

Scores on an AP Exam at a local high school are recorded in the table. What was the average score?

Answer: D) 4.266 is correct

Explanation:

We are given the below frequency table:

Score Frequency

1 | 0

2 | 3

3 | 4

4 | 16

5 | 22

Let's denote the score by $x$ and frequency by $f$ .

The average formula is:

$Average=\frac{\sum fx}{\sum f}$

$=\frac{(1\times0) + (2\times3)+(3\times4) +(4\times16) + (5\times22)}{0+3+4+16+22}$

$=\frac{0+6+12+64+110}{45}$

$=\frac{192}{45}=4.267$

Therefore, the average score was 4.267

Hence the option D) 4.266

7 0

4 years ago

denis-greek [22]

Answer:

B

Step-by-step explanation:

4 0

3 years ago