Answer:
(x -1)(12x +13)
Step-by-step explanation:
You are looking to rewrite the middle term as the sum of terms that have factors of (12)(-13) that have a total of +1. Those factors are -12 and +13, so the expression you are factoring by grouping is ...
12x^2 +13x -12x -13
= x(12x +13) -1(12x +13)
= (x -1)(12x +13)
Answer:
B
Step-by-step explanation:
The question asks why you can use the argument that two angles are congruent. Hence, you want to have a statement that involves two angles in the two triangles. Only statement B is such a statement.
_____
Multiple choice questions often answer themselves, if you understand what you're reading.
Answer / Explanation
The question is incomplete. It can be found in search engines:
However, kindly find the complete question below:
Question:
The stem and leaf plot shows kilometers walked by participants in a charity benefit walk. Use it to answer the question
12|3 3 6 7 9 9
13| 1 1 4 5 5
14| 0 0 2 3 3 8 8 9
15| 2 2 2 2 2 3 5 5 7
16| 4 5 5 9 9
17|3 5
(a) How many people participated in the walk? Exactly 35 people participated in the walk.
(b)How many of the walkers traveled more than 14 kilometers? About 16-22 people traveled more than 14 kilometers.
Answers:
(a) Exactly 35 people participated in the walk.
(b) About 16-22 people traveled more than 14 kilometers.
The estimated standard error for the sample is 6
Given,
Sample size, n = 36
Sample variance,
= 1296
Standard deviation, s = √1296
= 36
Standard error, SE = ![\frac{s}{\sqrt{n} }](https://tex.z-dn.net/?f=%5Cfrac%7Bs%7D%7B%5Csqrt%7Bn%7D%20%7D)
= ![\frac{36}{\sqrt{36} }](https://tex.z-dn.net/?f=%5Cfrac%7B36%7D%7B%5Csqrt%7B36%7D%20%7D)
= ![\frac{36}{6}](https://tex.z-dn.net/?f=%5Cfrac%7B36%7D%7B6%7D)
= 6
Concept
- Sample size is the number of participants or observations included in a study. It is denoted by ‘n’
- Sample variance is a measure of the degree to which the numbers in a list are spread out. It is denoted by '
'
- Standard deviation is a measure of how dispersed the data is in relation to the mean. It is denoted by ‘s’
Learn more about standard deviation here:brainly.com/question/13905583
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Answer:
CE = 3.5
Step-by-step explanation:
<u>10 = 5</u>
25 = x
x = 12.5 perimeter of DCE
4+5+x=12.5
x = 3.5