4y:5y would be the simplest form
Answer:
The value of x is 23.
Step-by-step explanation:
Consider the below figure attached with this question.
Form the given figure it is clear that 
The sum of all exterior angles of a quadrilateral is 360°.

On combining like terms we get



Divide both sides by 15.

Therefore, the value of x is 23.
Answer:
86
Step-by-step explanation:
=> 
=> 
=> 
=> 
=> 86
rounding to nearest 10 to any number follow these rules
1. if number ends 0 , 1 , 2 ,3 4 , 5 take number down to nearset multiple of 10
2. if number ends with above 5 take the upper number multiple of 10
so here
413 + 35.6 + 998.5 + 376 + 85.3
= 410 + 40 + 1000+ 380 + 90
= 1920
Answer:
-10y
Step-by-step explanation: