Answer:
Total number of ways will be 209
Step-by-step explanation:
There are 6 boys and 4 girls in a group and 4 children are to be selected.
We have to find the number of ways that 4 children can be selected if at least one boy must be in the group of 4.
So the groups can be arranged as
(1 Boy + 3 girls), (2 Boy + 2 girls), (3 Boys + 1 girl), (4 boys)
Now we will find the combinations in which these arrangements can be done.
1 Boy and 3 girls =
=24
2 Boy and 2 girls=
3 Boys and 1 girl = 
4 Boys = 
Now total number of ways = 24 + 90 + 80 + 15 = 209
It's the slope-point formula:

We have:

Therefore, the slope 
Substitue what y equals for y and solve.

Hope this helps.
By applying the law of sines.

Given:
<span>GJ = 10 , ∠J =45° , ∠H = 31°
∴ </span><span>

∴ GH = 10 * sin 45° / sin 31° ≈ 13.7 m
</span>
Answer:
30
Step-by-step explanation: