Answer: 13.2
Step-by-step explanation: First, turn the percent into a decimal by dividing it by 100.
22/100 = 0.22
Multiply the decimal by 60.
0.22 x 60 = 13.2
First make a triangle by connecting the center point of the circle to one of the end points of the chord.
This will make a right triangle. The new formed line is the radius of the circle and will be the hypotenuse of the right triangle too.
Since one of the legs of the right triangle is half the chord, divide the chord in to two.
9.6 / 2 = 4.8
Now we can calculate for the hypotenuse.
Pythagorean theorem states that a²+b² = c²
So
√2.4² + 4.8² = c
√5.76 + 23.04 = c
√28.8 = c
5.4 = c
C is the hypotenuse and the hypotenuse is known as the radius of the circle.
So the radius is 5.4
To figure out which ordered pair is a solution to the equation 3x + 5y = 9, substitute the coordinates of each answer choice into the equation. Remember that coordinates are written as (x, y) where the first number in the parentheses is x in the equation and the second number is y in the equation.
A. (-2, -3)
x = -2, y = -3
Substituting into the equation gives
3(-2) + 5(-3) = 9
-6 - 15 = 9
-21 = 9
This does not satisfy the equation, so (-2, -3) is not a solution.
B. (2, 3)
x = 2, y = 3
3(2) + 5(3) = 9
6 + 15 = 9
21 = 9
21 does not equal 9; therefore (2, 3) is not a solution.
C. (-2, 3)
x = -2, y = -3
3(-2) + 5(3) = 9
-6 + 15 = 9
9 = 9
This satisfies the equation, so (-2, 3) is a solution.
D. (2, -3)
x = 2, y = -3
3(2) + 5(-3) = 9
6 - 15 = 9
-9 = 9
This does not satisfy the equation; therefore (2, -3) is not a solution.
Answer:
i dont know man
Step-by-step explanation:
i dont know