Answer:
u transpose all the constans to one side of the '=' sign and solve
Step-by-step explanation:
for example,
in the first question
the sides of the triangles are proportional then,
25/30 = x/ 10
=> (25x10)/30 = x
=> 250/30 = x
=> 8.33
im pretty sure like this u can do the rest, ;)
Answer: The value of x=1.
Measure of CD =1 unit.
Step-by-step explanation:
Given: Segment EC bisects segment AD at C.
That means , EC divided AD into two equal parts AC and CD,
i.e.
Also it is given that
and 
then, we have

So, the value of x=1.
Now, CD = AC = 4(1)-3 =4-3 =1 unit.
Hence, Measure of CD =1 unit.
Answer:
it would be D
Step-by-step explanation:
all other choices have a repeating x value.
Answer:
X= 31
Step-by-step explanation:
13x- 15= 12x+ 16
-12x -12x
x- 15= 16
+15 +15
x= 16+ 15
x= 31