S = at^2 + v0t + s0
at^2 = s - s0 - v0t
a = (s - s0 - v0t) / t^2
Answer: Choice A) 
There's an open hole at -3 and shading to the right of this hole.
The hole indicates "do not include this endpoint". So we won't have an "or equal to" as part of the inequality sign.
The shading is to the right meaning we are shading everything larger than -3.
Answer: L = 29cm
Step-by-step explanation:
Let's go!!
To find any rectangle area, you have to apply this formula: A = L . w , where L is the length and w is the width.
So, we have w = L - 13 (the width is 13 less than the Length) and then, perimeter is 90 cm.
Well, I hope you remember that the perimeter of rectangle is 2L + 2W. In this case, 2L + 2w = 90
Then, you might to solve this system of equation:
2L + 2w = 90
w = L - 13
Simplifying the first equation, you'll have L + w = 45 (you can divide everything of 2).
Our new system:
L + w = 45
w = L - 13
Using the substituition method:
L + L - 13 = 45
2L = 58
L = 29 cm
the width is 29 - 13 = 16 cm
Very easy:
put the 10 and 12 end to end then back off the 7 inches
22-7 = 15
