PEMDAS
Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction
ask yourself which one of these comes first in the given equation
hint: its the exponent
Answer:
x = 10
Step-by-step explanation:
Since the triangles are similar the ratios of corresponding sides are equal
=
, that is
=
( cross- multiply )
20(4x + 2) = 84x
80x + 40 = 84x ( subtract 80x from both sides )
40 = 4x ( divide both sides by 4 )
x = 10
Then, the median is found by taking the mean (or average) of the two middle most numbers.
Answer: 11, 45, 45, 54, 520