Answer:
Step-by-step explanation:
<u>Given equation of the line:</u>
<u>Use two points from the graph of the second line to find its equation:</u>
<u>Use double intercept form to find the equation:</u>
- x/a + y/b = 1
- x/ (-6) + y/(- 2) = 1
- 2x + 6y = - 12
Now we have the system, solve it by elimination.
<u>Multiply the first equation by 2 and the second equation by 3 and add up:</u>
- 2(- 3x - 9y) + 3(2x + 6y) = 2*18 + 3*(- 12)
- -6x - 18y + 6x + 18y = 36 - 36
- 0 = 0
All terms are cancelled, it means the equations are same, the lines overlap and there is infinite number of solutions.
H is equal to 9.
Here is an inside tip. Use the Desmos Graphing Calculator. It is very easy to use.
Answer:
It was 26.5 degrees colder at midnight than at 2:00 pm
Step-by-step explanation:
We have that:
At 2:pm, it was 4 degrees.
The temperature dropped 2.5 degrees per hour until 9:00 pm.
From 2pm to 9pm, there are 7 hours. 2.5 per hour, it was 4 degrees at 2 pm.
So at 9 pm the temperature is:
4 - 2.5*7 = -13.5
The temperature dropped another 9 degrees by midnight.
At midnight, the temperature is -13.5 - 9 = -22.5 degrees
How much colder was it at midnight than at 2:00 pm?
2pm: 4 degrees
Midnight: -22.5 degrees
How much coldren
-22.5 - 4 = -26.5
It was 26.5 degrees colder at midnight than at 2:00 pm
Answer: y=40
Step-by-step explanation: 70-30=40
