Answer:
19
Step-by-step explanation:
note that
(a + b)² = a² + b² + 2ab , that is
a² + b² + 2ab = (a + b)² ← subtract 2ab from both sides
a² + b² = (a + b)² - 2ab
= 5² - 2(3)
= 25 - 6
= 19
Answer:
b.
Step-by-step explanation:
The graph can be divided into 4 regions.
Region 1 is for 
Region 2 is for 
Region 3 is for 
Region 4 is for 
So, for the region 1, the values of
goes on decreasing with increasing
. Therefore, the function is decreasing in the interval
.
Now, for the region 2, the values of
increases with increasing
. So, the function is increasing in the interval
.
For the region 3, the the values of
goes on decreasing with increasing
. Therefore, the function is decreasing in the interval
.
Now, for the region 4, the values of
increases with increasing
. So, the function is increasing in the interval
.
Therefore, regions 2 and 4 are the regions when the function is increasing.
Hence, the correct option is b.
Chips Defective Chips
Al chips 4 %
Total production per day 50.999 4 %
Randon sample sold 100 4 %
% defectives should be = % total production
Defectives expected in sample is 4% of 100 = 4 x 100 / 100 = 4
Chance of 2 defective chips 1
Answer:
Step-by-step explanation:
1600/4 . 5000/2 the adults is 400 and the children is 2500