Answer: A. $5.33
Step-by-step explanation:
I took the test on edge
located at the point F (9, 25) . What is the ratio of the length of PF to the length of
LF ?
A 2 : 3
B 3 : 2
C 2 : 5
D 3 : 5
The ratio of the length of PF to the length of LF on the coordinate grid can be found by using the distance formula. After calculation, we find that the ratio is approximately 2:3.
To answer this question, you need to know how to calculate the distance between two points on the coordinate grid, which can be found using the distance formula. The distance formula is √[(x2-x1)² + (y2-y1)²] where (x1, y1) and (x2, y2) are the coordinates of two points on a plane.
First, calculate the length of PF as follows:
PF = √[(9-5)² + (25-35)²] = √[16 + 100] = √116≈10.77
Next, calculate the length of LF as follows:
LF = √[(15-9)² + (10-25)²] = √[36 + 225] = √261≈16.155
Hence, the ratio of the length of PF to the length of LF is approximately 10.77:16.155 which approximately reduces to 2:3.
Therefore, the answer is A: 2:3.
#SPJ11
2.) 4x+13y=40
4x+3y=-40
Answer:
(4,1)
Step-by-step explanation:
The vertex of the quadratic can be found using -b/2a. The vertex is the point (-b/2a, f(-b/2a)).
To find the x coordinate of the quadratic, define its a,b, and c. The quadratic has a = 2, b=-16, and c=31. Then -b/2a is -(-16)/2(2) = 16/4 = 4.
To find the y-coordinate, input the x=4 and solve for y.
The vertex is (4,1).