Answer: Step-by-step explanation: Line AB is horizontal, so reflection across the x-axis maps it to a horizontal line. Then rotation CCW by 90° maps it ... Which statement accurately explains whether a reflection over the X-axis and a 180° rotation would map figure ACB onto itself?.
90° counterclockwise. Which statement accurately explains whether a reflection over the x-axis and a 180° rotation would map figure ACB onto itself? Which statement accurately explains whether a reflection over the x-axis and a 90° counterclockwise rotation would map figure ACB onto itself? WILL GIVE IF CORRECT, IF WRONG NO Which statement accurately explains whether a reflection over the x-axis and a 90° counterclockwise rotation would map Answer: 9514 1404 393Answer: No, A″C″B″ is located at A″1, 1, C″4 Which statement accurately explains whether a reflection over the x-axis and a 90° counterclockwise rotation would map figure ACB onto itself? a coordinate Take the point (1,0) that's on the x axis. a 90 degree rotation (counterclockwise of course) makes it be on the y axis instead at (0,1). 90 degrees more is ...
Step-by-step explanation:
This image should help with that.
Answer:
The speed of the boat in still water u = 8 ![\frac{mi}{hr}](https://tex.z-dn.net/?f=%5Cfrac%7Bmi%7D%7Bhr%7D)
Step-by-step explanation:
Let speed of the boat = u ![\frac{mi}{hr}](https://tex.z-dn.net/?f=%5Cfrac%7Bmi%7D%7Bhr%7D)
Speed of the current = v
= 4 ![\frac{mi}{hr}](https://tex.z-dn.net/?f=%5Cfrac%7Bmi%7D%7Bhr%7D)
Given that the first boat to travel 3 miles upstream and back in a total 1 hour.
So
![\frac{3}{u - v} + \frac{3}{u + v} = 1](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7Bu%20-%20v%7D%20%2B%20%5Cfrac%7B3%7D%7Bu%20%2B%20v%7D%20%20%3D%201)
![\frac{6 u}{u^{2} - v^{2} } = 1](https://tex.z-dn.net/?f=%5Cfrac%7B6%20u%7D%7Bu%5E%7B2%7D%20-%20v%5E%7B2%7D%20%20%7D%20%3D%201)
![u^{2} - v^{2} - 6 u = 0](https://tex.z-dn.net/?f=u%5E%7B2%7D%20-%20v%5E%7B2%7D%20-%206%20u%20%3D%200)
Since v = 4
![u^{2} - 6 u - 16 = 0](https://tex.z-dn.net/?f=u%5E%7B2%7D%20-%206%20u%20-%2016%20%3D%200)
By solving above equation
![u^{2} + 2 u - 8 u - 16 = 0](https://tex.z-dn.net/?f=u%5E%7B2%7D%20%2B%202%20u%20-%208%20u%20-%2016%20%3D%200)
![u (u + 2) - 8 (u + 2) = 0](https://tex.z-dn.net/?f=u%20%28u%20%2B%202%29%20-%208%20%28u%20%2B%202%29%20%3D%200)
![(u - 8)(u +2) = 0](https://tex.z-dn.net/?f=%28u%20-%208%29%28u%20%2B2%29%20%3D%200)
u = 8 , - 2
Since u = -2 is not valid.
⇒ u = 8 ![\frac{mi}{hr}](https://tex.z-dn.net/?f=%5Cfrac%7Bmi%7D%7Bhr%7D)
This is the speed of the boat in still water.
Answer:
1.6
this is a rational number, since it can be written in fraction form, however it is not an integer because it is a decimal number and not a whole number.