Answer:
21.25 m
Step-by-step explanation:
y = Ax² + Bx + C
Set the origin at the middle of the span so that the point (0, 0) is on the curve
0 = A(0)² + B(0) + C means C = 0
The points (200, 85) and (-200, 85) are on the curve
85 = A(200)² + B(200)
85 = A(-200)² + B(-200)
85 - 40000A - B(200) = 85 - 40000A + B(200)
- B(200) = B(200)
-400B = 0
B = 0
85 = A(200)²
A = 85/40000
y = 85x²/40000
y = 85(100)²/40000 = 21.25 m
Answer:
The answer is the 2nd one.
1. Graph using y = mx + b
a) y = 3x - 4 (m = 3, b = -4)
b) y = x + 1 (m = 1, b = 1)
c) y = -2x + 2 (m = -2, b = 2)
d) y = -x - 3 (m = -1, b = -3)
2. Graph using x- and y-intercepts
a) 2x + 3y = 6 (x-intercept is 3, y-intercept is 2)
b) x - 2y = -8 (x-intercept is -8, y-intercept is 4)
c) -3x + y = -3 (x-intercept is 1, y-intercept is -3)
d) -4x - 2y = 6 (x-intercept is -3/2, y-intercept is -3)
3. Graph using a table
a) y = 2x -1
(Make a table using values -1, 0, and 1 in the "x" column. The values in the "y" column will be -3, -1, and 1)
b) 2x + y = 4
(Make a table using values 0, 1, and 2 in the "x" column. The values in the "y" column will be 4, 2, 0)
Answer:
1) It is given that line AB is tangent to the circle at A.
∴ ∠CAB = 90º (Tangent at any point of a circle is perpendicular to the radius throught the point of contact)
Thus, the measure of ∠CAB is 90º.
That is, log x = k if and only if 10 k = x.
