<u>Answer
</u>
AB=21
<u>Solution
</u>
In the triangle ABC two lines are parallel to side AC.In a triangle a line passing through two side and it is parallel to third side,then this line divides two side in equal ratio.
Here we take any of the parallel line, passing through AB and AC, and parallel to BC.
So we can write,
 =
= 
8x+1=6x+2.5x
x=1/0.5
x=2
Therefore AB = 6x+2x+1+2x =10x+1=21
 
        
             
        
        
        
Answer:
The answers to each question are:
a)
b)
c)
d)
Step-by-step explanation:
The function f(r) that represents the area of a circle (in square cm) is:

a) To represent the area (in square cm) of a circle whose radius is 4 cm, you just have to evaluate the function with a radius of 4cm:

b) To represent how much the area (in square cm) of a circle increases by when its radius increases from 10.9 to 10.91 cm, you have to represent the difference between the final area with a radius of 10.91cm and the initial area of a radius of 10.9cm:

c) To represent the area of 5 circles that all have a radius of 12.7 cm, we can use the function f(r) to represent the area of a circle with a radius of 12.7cm and multiply it for 5:

d) To represent the area of the larger circle that is 59 square cm more than the first circle (with a radius of 28 cm), we can use the function f(r) to obtain the area of the first circle and addition 59 square cm:

 
        
             
        
        
        
Answer:
the rational numbers is 2
 
        
                    
             
        
        
        
Answer:
11.27cm
Step-by-step explanation:
705% of 14milimeters
705/100 X 14 = 98.7
increase by adding 98.7milimeter to 14milimeter
98.7+14= 112.7milimeter or 11.27cm
 
        
             
        
        
        
Answer:
c. results in either of two directions can lead to rejection of the null hypothesis.
Step-by-step explanation:
A two tailed test is performed when we want to test if there is statistically significant difference from the null state. That means that if the statistic value is significantly higher or significantly lower, we will reject the null hypothesis. Both tails have rejection areas.