Answer:
Oh this is easy 21'-sid93dnsimepl-02
Step-by-step explanation:
7/10 is the rational number :)
Answer:

Step-by-step explanation:
To find: a power that has a value greater than 140 and less than 145
Solution:
Take 
Here,
and 
That is 
Therefore,
has a value greater than 140 and less than 145.
The answer is 45
2x+45+x=180
3x+45=180
3x=135
X=45
Am assuming the text of the problem is:
"At 6:00 p.m., the temperature was 55 Fahrenheit. At 11:00 p.m. that same evening, the temperature was 40 Fahrenheit. What real number represents the average change in temperature per hour?"
Average change in temperature per hour = (55 - 40)/(11 - 6)
Average change in temperature per hour = 15/5
Average change in temperature per hour = 3 Fahrenheit per hour