Answer:
Step-by-step explanation:
<u>Expand the terms in the bracket</u>
That's
<u>Add 3y to both sides of the equation</u>
Subtract 7 from both sides by the equation
<u>Divide both sides by - 4</u>
We have the final answer as
Hope this helps you
Answer:
first one yes
Step-by-step explanation:
second one its
39x+10=180
Answer:
Step-by-step explanation:
-1*x^2= -1
-1*(1)^2
-1*1= -1
The temperature at the beginning of the day was 6.2°F
Let x represent the temperature at the beginning of the day.
Since, the temperature of a city doubles during the day, and then decreases by 14.1ºF after the sun goes down, hence:
Temperature at end of day = 2x - 14.1
Also, the temperature at the end of the day is −1.7°F, hence:
2x - 14.1 = -1.7
2x = 12.4
x = 6.2°F
The temperature at the beginning of the day was 6.2°F
Find out more at: brainly.com/question/21105092
