68 is the answers that it I guesss
Ratio of boys to the girls
= No of boys ÷ No of girls
=15÷18
=5:6
Answer: At t=0.015 hours when the car 0.6 miles from the check point.
Step-by-step explanation:
Since we have given that
Distance traveled by him towards a speed check point = 1.4 miles
Speed at which he is travelling = 52 miles per hour
Let the time taken by him be x
Since we have the equation

where<em> </em><em>d</em><em> </em>denotes distance
and <em>t </em>denotes time.
If we have given that the car 0.6 miles from the check point.
So, we put the value of <em>d</em> in place of it .

So, at t=0.015 hours when the car 0.6 miles from the check point.
The higher the slope closer it is to being vertical. The lower the slope the closer it is to being horizontal.If the slope is positive Y increases as X increases if the slope is negative Y decreases as X increases.
Answer: See below
Explanation:
(2x + 2y)(x - y) + (2x - 2y)(x+y)
= 2(x+y)(x-y) + 2(x-y)(x+y)
= 2(x^2 - y^2) + 2(x^2 - y^2)
= (2 + 2)(x^2 - y^2) (combine like terms)
= 4(x^2 - y^2)