Answer:
12:56
Step-by-step explanation:
just do 4mm x 3.14 = 12.56
First we pick the equation. Let's say we pick first one. From it we express y.

Then we use this y and plug it in instead of y in the second equation.

Now just solve for x.

We plug this x in the first equation.

And solve for y.

So the solution to the equation is geometrically a point P which lies on the intersection of the two lines.

Hope this helps.
r3t40
Answer:
388 ft^2
Step-by-step explanation:
you can cut the figure into a square, rectangle, and triangle. you find the area for each shape, then add them together to find the total area.
Answer:
The required probability is, 0.78
Step-by-step explanation:
There are, (52 - 13) = 39 cards which are not spade
5 cards can be chosen from the deck of 52 cards in
ways
and out of these 5 choices, none of them will be spade in,
ways
So,
P(None of the chosen cards is spade)
= 

Hence,
P(out of these 5 choices, at least one card is spade)

= 0.78