Answer:
part A you have correct.
is there a 'D" for part B? A through C answers don't seem correct.
after a response from the poster, "D" was the correct answer.
re-posting it because some random person deleted it.
x = 37.5 (or) 
Solution:
Given 
AC = 50, DE = 30, EC = 25, BE = x, BC = 25 + x
To find the value of x:
Property of similar triangles:
If two triangles are similar then the corresponding angles are congruent and the corresponding sides are in proportion.


Do cross multiplication, we get


Subtract 30x from both sides of the equation.

Divide by 20 on both sides of the equation, we get
x = 37.5 (or) 
Hence the value of x is 37.5 or
.
Answer:
6 , 1
5 , 2
4 , 3
Step-by-step explanation:
Just swap the numbers.
Answer:
64/49
Step-by-step explanation:
The applicable rules of exponents are ...
(a^b)^c = a^(bc)
(a^b)(a^c) = a^(b+c)
a^-b = 1/a^b
a^0 = 1
_____
Using these rules, we can simplify the given expression to ...

Answer:
4.06
Step-by-step explanation:
Given :
Scores Number of students
0 1
1 2
2 5
3 3
4 6
5 7
6 9
To Find: Mean
Solution:
Mean = 
Mean = 
Mean = 
Mean = 
Hence, The Mean of baseball score is 4.06 .