Answer:
(10a+5)²= 100 a( a+1) + 25
Step-by-step explanation:
<u><em>Explanation:-</em></u>
Given
(10a+5)²
By using (a+b)² = a² +2ab +b²
= (10a)²+ 2 × 10a× 5 + (5)²
= 100a² + 100a + 25
= 100 a( a+1) + 25
To find the absolute deviation of the data point 7, you will find how far this number is from the mean. Because the mean was 5, the absolute deviation from the mean is 2. 7 is two units away from 5.
Answer:
28
Step-by-step explanation:
3+(2)(6)+!3
3+12+13
15+!3
28