778.5 Million in Scientific Notation is..
7.785 × 
Answer:
Hello There!!
Step-by-step explanation:
The answer is 3,9,15,21.
hope this helps,have a great day!!
~Pinky~
Answer:
The average walking speed is 1.48 feet per second
Step-by-step explanation:
we have
where
r is average walking speed
p is the population in thousands
In this problem we have
----> because p in the equation is in thousands
substitute the value of p in the equation
using a calculator
Answer:
B) y = (-7X/5) + 4
Step-by-step explanation:
Recall two lines are perpendicular if their slopes are negative reciprocals (5/7 goes to -7/5).
Assuming in the form y = mx + b:
Solving for b:
-7/5(-5) + x = 11
(5's & negatives cancel out...)
7 + x = 11
x = 4
y = -7/5x + 4
Area
= 9 mi x 18 mi + 25 mi x 18 mi
= 18 mi x (9 mi + 25 mi)
= 18 mi x 34 mi
= 612 mi squared
