Answer:
B AND F
Step-by-step explanation:
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Step-by-step explanation:
The equation of a parabola with focus at (h, k) and the directrix y = p is given by the following formula:
(y - k)^2 = 4 * f * (x - h)
In this case, the focus is at the origin (0, 0) and the directrix is the line y = -1.3, so the equation representing the cross section of the reflector is:
y^2 = 4 * f * x
= 4 * (-1.3) * x
= -5.2x
The depth of the reflector is the distance from the vertex to the directrix. In this case, the vertex is at the origin, so the depth is simply the distance from the origin to the line y = -1.3. Since the directrix is a horizontal line, this distance is simply the absolute value of the y-coordinate of the line, which is 1.3 inches. Therefore, the depth of the reflector is approximately 1.3 inches.
Answer:
Option <u>C. 13.3 in</u>.
Step-by-step explanation:
Here's the required formula to find the radius of the bike tire :
- C = circumference
- π = 3.14
- r = radius
Substituting all the given values in the formula to find the radius of the bike tire :
Hence, the radius of bike tire is 13.3 inches.
Answer:
Solve for x and justify each step with a reason: 3(x - 2) + 5x = 9x - 24
Steps:
Justification (Reasons):
3(x - 2) + 5x = 9x - 24
Given
3x - 6 + 5x = 9x - 24
Distributive Property
3x + 5x - 6 = 9x - 24
Commutative Property of Addition
8x - 6 = 9x - 24
Combine Like Terms
8x - 8x - 6 = 9x - 8x - 24
Subtraction Property of Equality
0 - 6 = x - 24
Additive Inverse Property (left)
Combine Like Terms (right)
-6 = x - 24
Additive Identity Property
-6 + 24 = x - 24 + 24
Addition Property of Equality
18 = x + 0
Addition (left)
Additive Inverse Property (right)
18 = x
Additive Identity Property
The justification method shown above is an example of one method.
There are other justification methods that are deemed acceptable.
Step-by-step explanation:
hope it help brainliest pls
