
1) Since in the USA 8 x 10 ^9 messages are sent every month, that means that approximately 8 billion messages are sent.
2) We can Prime factorize it:
Note that on the right side we've picked only prime numbers. In this case, 2 and 5.
So we can rewrite 8 x 10^9 as prime factors.

3) Hence, the answer is:
The fourth one 12.5!
It's self-explanatory, hope this helps!
Let's find X. Since both equations are equal to y, they are equal to themselves.
-3x-3=-3; we just need to solve from here. -3x-3=-3; let's add 3 to both sides. -3x=0; this means that 0 is X.
Let's use a graph to check.
So, y is -3.
So, (0, -3) is when the two lines intersect and it's our solution.
Answer:
x = 50 degrees
y = 70 degrees
z = 60 degrees
w = 70 degrees
Step-by-step explanation:
Answer: (1,4)
Step-by-step explanation:
To find the mid-point,find the mean average between the x and y values.