Answer:
irational
Step-by-step explanation:
rational.
2.1x - 10.05 = 3.15 - 6.7x <=> <span>2.1x + 6.7x = 3.15 + 10.05 <=>
<=> 8.8x = 13.2 => x = 13.2/8.8 => x = 1.5. </span>
Answer:
Option C.
Step-by-step explanation:
We need to translate each phrase and find the different expression.
"+" sign is used for sum, more and total.
Twice means two times of a number.
Let n be the unknown number.
Two more than a number = n+2
The total of n and 2 = n+2
Twice the number n = 2n
Sum of n and 2 = n+2
From the above expressions it is clear that only 2n is different from other.
Therefore, the correct option is C.
What is asked is the average salary for high school teacher throughout the country. Naturally, the salary data will be in a range and that range will be significant. The data that will be calculated will be the median of the salary and not the mean.<span />