She has 501 more pennies than nickles.
Answer:
× π10 = 7
Explanation:
The formula to find arc length is 
× 
Simply plug in radius and arc length to get your equation.
Answer:
(a) 12.96 ft²
(b) 21.5 in²
Step-by-step explanation:
(a) For the first diagram
Area of the shaded region (A) = Area of Tripezium- area of circle
A = [1/2(a+b)h]-[πr²]............... Equation 1
Where a and b are the parallel side of the tripezium respectively, h = height of the tripezium, r = radius of the circle.
From the diagram,
Given: a = 15 ft, b = 6 ft, h = 12 ft, r = h/2 = 12/2 = 6 ft.
Constant: π = 3.14
Substitute these values into equation 1
A = [12(15+6)/2]-(3.14×6²)
A = 126-113.04
A = 12.96 ft²
(b) For the second diagram,
Area of the shaded region (A') = Area of square- area of circle
A' = (L²)-(πr²)............. Equation 2
Where L = lenght of one side of the square, r = radius of the circle
From the diagram,
Given: L = 2r = (2×5) = 10 in, r = 5 in
Substitute these values into equation 2
A' = (10²)-(3.14×5²)
A' = 100-78.5
A = 21.5 in²
Answer:
No, no it is not.
Step-by-step explanation:
First step : Solve for y in − 2 x + y = − 7.
y = 2 x − 7
Second step : Substitute y = 2 x - 7 into 3 x + 2 y = 10.
7 x − 14 = 10
Solve for x in 7 x - 14 = 10.
x = 24 / 7
Substitute x = 24 / 7 into y = 2 x - 7.
- 1 / 7
That means your answer is.
x = 24 / 7
y = − 1 / 7
