Answer:
-12.8x - 20y + 8.4
Step-by-step explanation:
To do this you just multiply everything by negative 4
so we have 3.2x*-4 + 5y*-4 - 2.1*-4
This gives us
-12.8x - 20y + 8.4
The last term is positive because we multplied a negative by another negative
2a + 8a simplified is 10a
Answer:
3.6556
Step-by-step explanation:
Multiply both, can i get brainliest?
Answer: 
Step-by-step explanation:
Given
The central angle of a sector measures 
The radius of the circle is 
The area of the sector is given by

Insert the values

The concept that is useful in order to answer this item is the concept of ratio and proportion. Let x be the height of the rock from the ground. We use the equation below to answer.
5.5 ft / 18 ft = x ft / 209.5 ft
The value of x from the equation is 64 ft. Thus, they will be needing approximately 64 ft of rope.