Answer:
The answer to your question is Circumference = 20π cm; Area = 100π cm
Step-by-step explanation:
Data
diameter = 20 cm
Circumference = ?
Area = ?
Process
1.- Write the formula of Circumference
Circumference = πd
-Substitution
Circumference = 20π
2.- Write the formula of area of a circle
Area of a circle = πr²
-Calculate the radius
radius = diameter/2
radius = 20/2
= 10 cm
-Substitution
Area = (10)²π
-Result
Area = 100π
Answer:
<em>Scott will take 221 minutes to run 52 km</em>
Step-by-step explanation:
<u>Speed</u>
The speed of an object can be calculated with the formula:
Where d is the distance traveled and t is the time taken.
Scott can run d=20 km in 85 minutes. Thus, his speed is:
Now he wants to know how many minutes it will take him to run d=52 km. Solving the formula for t:
Since the speed has been already determined:
Multiplying by the reciprocal of the denominator:
t = 221 min
Scott will take 221 minutes to run 52 km
3x + 3y = 27
3x - 3y = -11
------------------add
6x = 16
x = 16/6 which reduces to 8/3
3x + 3y = 27
3(8/3) + 3y = 27
8 + 3y = 27
3y = 27 - 8
3y = 19
y = 19/3
solution is (8/3, 19/3)
Answer:
= 3.75 dollars per lb
Step-by-step explanation:
https://www.calculatorsoup.com/calculators/math/unit-rate-calculator.php
If you factor the expression, your answer would look like this:
x + x^2 + 4
If you simplify the expression, your answer would look like this:
x^2 + x + 4
