Write the expanded notation for 15,729?
1 answer:
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Answer: (175*π)yd^2
Step-by-step explanation:
If we find the total area enclosed by the outer circle, the subtract the area enclosed by the inner circle, the we inevitably get the area between the two regions.
The radius of the outer circle is 15yd + 5yd, which is 20yd. Use the formula for the area of a circle, A = pi*r^2. Therefore, the area enclosed by the outer circle is:
Now, the radius of the inner circle was stated to be 15yd. Do the same thing. Plug it into the formula:
Subtract the two areas to find the shaded blue area. Hopefully this was intuitive by thinking of area as an enclosed region of space.
Answer:
see the explanation
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
Let
x ----> the time in seconds
y ---> the distance in meters
In this problem we have a proportional relationship between the variables x and y
Find the constant of proportionality k
For x=2, y=25 --->
For x=4, y=50 --->
For x=6, y=75 --->
For x=8, y=100 --->
so
The value of k is
In this problem the value of k or slope represent the speed of the train
The linear equation is equal to
or