It means multiply if your looking in a math problem
Answer:
N represent 5 games
Step-by-step explanation:
Firstly, we need to get the total number of games. From the information given, the total number of games is 9 + N = (9 + N) games
The total number of games won is (2 + N) games and this is exactly half of the total number of games.
This mathematically means
2(2 + N) = (9 + N)
4 + 2N = 9 + N
2N - N = 9 - 4
N = 5 games
Complete question :
In Hawaii a volcano is about to explodel At 6:00 am a device placed inside the volcano
measures the temperature at 69.5 degrees Celsius. Every 3 minutes the temperature
rises 1/5 a degree. If the Volcano explodes at 145.5 degrees Celsius how many hours do
they have to evacuate a nearby city?
Will Mark BRAINLIEST to the correct answer
Answer:
19 hours
Step-by-step explanation:
Given that:
Temperature of volcano at 6:00 am = 69.5°C
Average rise in temperature per 3 minute = 1/5
Hence, rise in temperature per minute = 0.0666666°C
Temperature at which volcano will explode = 145.5°C
Hence, change in temperature :
(145.5°C - 69.5°C) = 76°C
Hence, temperature will have to rise by 76°C
Rise in temperature / rate of temperature increase
= 76°C / 0.0666666°C
= 1140.0011 minutes
= 1140.0011 / 60
= 19.0000019 hours
= 19 hours
Answer:
I have solved it in elimination method if you need it in another method let me know.
Step-by-step explanation:
3x+y=21
-x-y=5
2x=26
x=13
-3×13-3y=15
y= -18
