3.75 miles per hr........in 2.5 hrs =
3.75 * 2.5 = 9.375 miles
True, each number is getting doubled, both sides are proportionally staying the same.
If period of

is one-half the period of

and
<span>

has a period of 2π, then

and

.
</span>
To find the period of sine function

we use the rule

.
<span /><span />
f is sine function where f (0)=0, then c=0; with period

, then

, because

.
To find a we consider the condition

, from where

.
If the amplitude of

is twice the amplitude of

, then

has a product factor twice smaller than

and while period of

<span> </span> is 2π and g(0)=0, we can write

.
Children ticket price=£9
Adult ticket price=£17
Let adult=A
Children=C
So, 2A+3C=61 (equation 1)
3A+5C=96(equation 2)
Multiply equation 1 by 3 and equation 2 by 2
Solve equations and get the answer.
54÷2 since there 2 girls for each boy so 2 girls for 1 boy and there 54 girls
54÷2=27
so there 27 boys in the league