C) 30, 60, 90 because right off the bat, the largest angle is 90 degrees and it is the ONLY answer in which it’s other 2 angles are summed up to equal to it. And the rest of the facts match up. 60 degrees is twice as 30
Answer:
12
Step-by-step explanation:
To find the mean of a set of numbers, add all the numbers together. Then, divide the sum by how many numbers you had to begin with.
Add the numbers together:
10 + 12 + 15 + 11
= 48 This is the sum of the data
Count how many numbers you had:
10, 12, 15 and 11 are FOUR numbers (amount of data).
Divide the sum of the data by the amount of data.
48 ÷ 4 = 12 This is the mean
The mean of 10, 12, 15, 11 is 12.
Answer:
See proof
Step-by-step explanation:
Statements Reasons
1. 
bisects 
Given
2. 
Definition of angle bisector
3. 
Reflexive property of equality
4. 
AAS postulate
5. 
Congruent triangles have congruent corresponding sides
6. 
Reflexive property of equality
7. 
SAS postulate
8. 
Congruent triangles have congruent corresponding sides
25 over 100 as a percent is 25% and 25 over 100 as a decimal is .25
