Answer:
Option A is correct.
Solution for the given equation is, 
Step-by-step explanation:
Given that : 
Let 
then our equation become;
.....[1]
A quadratic equation is of the form:
.....[2] where a, b and c are coefficient and the solution is given by;

Comparing equation [1] and [2] we get;
a = 2 b = -1 and c =-1
then;

Simplify:

or


or
and 
Simplify:
y = 1 and
Substitute y = cos x we have;

⇒
and

⇒
The solution set: 
Therefore, the solution for the given equation
is, 
Yes, it can. Side 22cm can be the hypotenuse (longest side in a right angled triangle) while the others can be shorter sides. These sides form a RIGHT-ANGLED TRIANGLE.
Answer:
h(3) = -3
Step-by-step explanation:
h(3) = 4-7
h(3) = -3
Answer:
-4
Step-by-step explanation:
When looking at the graph look at the y axis and look to see where the line passes through
Check out the pdf attached to see how to do this problem. It will give you a way of solving all ratio problems. But the final answer 176-124 = 52 there are 52 more girls than boys.