Answer:
-9
Step-by-step explanation:
i think maybe and if its right hope it helped
5/6 of an hour is 50 minutes. 50 (time) divided by 8 (tasks) is 6.25. So, it takes the robot 6 minutes and 15 seconds (.25 of a minute is 15 seconds) to complete one task. Now, just divide 60 by 6.25. It's 9.6. Since a robot cannot complete .6 of a task, the robot only completes 9 tasks in an hour.
Answer: C) 7.5 feet
Step-by-step explanation:
1. You know that the triangles are similar. Therefore, to calculte the lenght of her puddle (which is identified in the figure as <em>l</em> ), you can set up the following proportions:
![\frac{l}{5ft}=\frac{12ft}{8ft}](https://tex.z-dn.net/?f=%5Cfrac%7Bl%7D%7B5ft%7D%3D%5Cfrac%7B12ft%7D%7B8ft%7D)
2. Now, you must solve for <em>l. </em>Then you obtain that the result is:
![l=\frac{(5ft)(12ft)}{8ft}\\l=7.5ft](https://tex.z-dn.net/?f=l%3D%5Cfrac%7B%285ft%29%2812ft%29%7D%7B8ft%7D%5C%5Cl%3D7.5ft)
3. The answer is the option C.
Answer:
Perimeter=![22x+2y](https://tex.z-dn.net/?f=22x%2B2y)
Step-by-step explanation:
Given:
length of the rectangle= ![4x + 3y](https://tex.z-dn.net/?f=4x%20%2B%203y)
Width of the rectangle= ![7x - 2y](https://tex.z-dn.net/?f=7x%20-%202y)
Perimeter of a rectangle= 2(length+width)
Perimeter ![=2(4x+3y+7x-2y)\\\\=2(11x+y)\\\\=22x+2y](https://tex.z-dn.net/?f=%3D2%284x%2B3y%2B7x-2y%29%5C%5C%5C%5C%3D2%2811x%2By%29%5C%5C%5C%5C%3D22x%2B2y)
So, the expression of the perimeter of given rectangle is:
![22x+2y](https://tex.z-dn.net/?f=22x%2B2y)
5x13=65 (area of the rectangle)
5x6x½=15 (area of the triangle)
so 65+15=80