Given, the plot is in the shape of triangle.
First side = x meter
Second side = ( 5x-3 )meters 
Third side = ( 7x-6 ) meters 
Perimeter of triangle is equal to the sum of all the three sides. 
Perimeter = 
Combine like terms by adding all the x terms together and all the constant terms together. 
Perimeter = 
Perimeter =  feet ... Answer
 feet ... Answer
 
        
             
        
        
        
So remember that percent means parts out of 100
60%=60/100=6/10
so every 10 throws she makes 6
how many 5 in 50? 
50/10=5
answe ris 5
so 5 tens so therefor 5 sixes
5 times 6=30
answer is 30 throws
        
             
        
        
        
Answer:
Part a): 100 degrees
Part b): Isosceles Triangle
Step-by-step explanation:
Part a): Since the angle measures of all triangles add up to 180 degrees and since the other two angles are 40 degrees, which add up to 80, we can use subtraction to find the answer.
180 - 80 = 100
Part b): Since only two of the three angles in this triangle have the same measure, we can find that it is an isosceles triangle, with base angles measuring 40 degrees, and the vertex angle being 100 degrees.
 
        
             
        
        
        
Answer: 2 + 2 = 4
Step-by-step explanation: Let's say you have 2 cars, and you friend has 2 cars, for your birthday, your friend gives you his 2 cars, so now in total you have 4 cars, hope this helped! -Mason