Answer:
Step-by-step explanation:
Midpoint of the diameter is the center.
<u>Use midpoint formula to determine the coordinates:</u>
- x = (2 - 4)/2 = -1
- y = (5 + 13)/2 = 9
<u>Find the radius using the midpoint and one of the endpoints and the distance formula:</u>
- r =
![\sqrt{(-1 - 2)^2 + (9 - 5)^2} = \sqrt{9+16} = \sqrt{25} = 5](https://tex.z-dn.net/?f=%5Csqrt%7B%28-1%20-%202%29%5E2%20%2B%20%289%20-%205%29%5E2%7D%20%20%3D%20%5Csqrt%7B9%2B16%7D%20%3D%20%5Csqrt%7B25%7D%20%3D%205)
<u>Use the equation of the circle:</u>
- (x - (-1))² + (y - 9)² = 5²
- (x + 1)² + (y - 9)² = 25
Correct choice is 4
Answer:
23*
Step-by-step explanation:
Separate the figure into the two shapes: a square and a trapezoid.
The sides of a square are all equal.
Therefore the square has a perimeter of 30 inches (because only three of its sides make up the whole shape)
An isosceles trapezoid has two sides that are equal: the two sides that are opposite each with length 5.
This means that 5 + 5 + 4 = 14.
Add the two perimeters up and you get 44inches.
Answer:
s = -1
Step-by-step explanation:
-10s-3=7
add 3 on both sides: -10s=10
divide both sides by -10: s=-1
According to the graph, the slope value is 3/1 with the rise over run test, the y-intercept is (0,4) and the slope is positive. All this proves that the function would be y = 3x + 4.