It should be D because you have to multiply the radius by itself so 5x5=25
And to get the actual area you multiply 25 x pi = Area. The answer should be A= 25pi square meters
Answer:
Part 1) The rate is 43.2\frac{km}{h}
Part 2) 129.6\ km
Step-by-step explanation:
Part 1)
we know that
A cyclist rides her bike at a rate of 12 meters per second
Remember that
1 hour=3,600 seconds
1 kilometer=1,000 meters
therefore
Part 2) How many kilometers will the cyclist travel in 3 hours?
using proportion
Answer: m=-11
Step-by-step explanation:
To find the slope of the line, you want to use formula . Since we are given two points, we can directly plug them in and solve.
Now, we know that the slope is -11.
Answer:
feet : Shark is 72 feet below sea level.
Step-by-step explanation:
Let x represent depth of the shark.
We have been given that the submarine’s depth was twice the depth of the shark. This means that depth of submarine would be .
We have been given that a submarine was 144 feet below sea level, so submarine's elevation would be .We can represent this information in an equation as:
To find shark's position, we need to solve for x.
Therefore, feet represents shark's elevation, which represents that shark is 72 feet below sea level.