9514 1404 393
Answer:
shaded/square = (50π cm²)/(400 cm²) = π/8
Step-by-step explanation:
The quarter circle has area ...
A = (1/4)(πr²) = π/4(20 cm)² = 100π cm²
The half-circle has area ...
A = (1/2)(πr²) = π/2(10 cm)² = 50π cm²
Then the area of the shaded portion is ...
shaded = 100π cm² -50π cm² = 50π cm²
__
The area of the square is ...
A = s² = (20 cm)² = 400 cm²
Then the ratio of interest is ...
shaded/square = (50π cm²)/(400 cm²) = π/8
Hello!!
Well, the y-intercept is found when x = 0, so plug in x = 0:
0.25(0) + 0.05y = 1
0.05y = 1
y = 20
Therefore, the y-intercept of 0.25 + 0.05y = 1.00 is 20.
Hope this helps!! Let me know if you have ANY questions.
In the equation 3.4a = 57.8, a is equal to: 17.
Answer:
f(10) = 3
Step-by-step explanation:
If f(x) = 
, in order to find the result for f(10) we just need to substitute 10 instead of x and we will get...
Answer:
b = 
Step-by-step explanation:
Given
a = 4b + 
- b, that is
a = 3b +
Multiply through by 3 to clear the fraction
3a = 9b + 2 ( subtract 2 from both sides )
3a - 2 = 9b ( divide both sides by 9 )
= b
