Answer:
There are 60 girls and 40 boys in the class.
Step-by-step explanation:
Given that the mean weight of 100 students in a certain class is 71kg, while the mean weight of boys is 65kg and that of girls is 75kg, to determine what is the number of boys and girls the following calculation must be performed:
1 x 75 + 0 x 65 + 75
0.9 x 75 + 0.1 x 65 = 74
0.8 x 75 + 0.2 x 65 = 73
0.7 x 75 + 0.3 x 65 = 72
0.6 x 75 + 0.4 x 65 = 71
Thus, there are 60 girls and 40 boys in the class.
Answer:
The answer is C
Step-by-step explanation: Hope this helps!
The answer is 4.66
3
——— = 8
y-2
y-2 = 8/3 —> 2.66
y = 2.66 + 2 —> 4.66
Answer:
y+29103.83045673370361328125
Answer:
Step-by-step explanation:
Given: graph
To find:the inequality
Solution:
Equation of a line passing through points 
is given by 
Take 
So,equation of line is evaluated as follows:
As per the graph,inequality is
Here, use sign < and not 
as line in the graph is dotted that is points on the line are excluded.
