Answer:-
I think it’s the last option where x and y both are zero.
2x + 2y = 0
Here x = 0 and y = 0.
Hope it helps if u hv any questions feel free to ask...hv a grt day :)
1 meter=100 centimeters. Therefore on Friday he repaired 2.5 meters and on Saturday he repaired 4.5 meters. In total he earned 4.5(6)+2.5(6) which equals $42
The area of a triangle is found by multiplying the base by the height. Problem is, that in this example with 3 different sides, you can't easily find out the height.
To the rescue comes Heron's formula:
and
So s = (25+26+21)/2 = 36
and Area = √36·11·10·15 ≈ 243.7
Answer:
The bacteria took 1 hour and 40 minutes to fill the first bottle and it took only 10 minutes to fill 3 more. This is because of the amount of bacteria, for the first bottle there were only a few so it took them time to grow and multiply but once there were a lot the process starts to get faster. Think of it like this if you have 1 bacteria it will multiply into 2 bacteria. The 2 will multiply into 4, then 8, 16, 32, 62, 124 and so on. Do you notice how the numbers are getting bigger every time? Each number is being multiplied by 2 so the growth rate speeds up very quickly, which is why it took the bacteria 1 hour and 40 minutes to fill the first bottle and only 10 minutes to fill the other 3.
(I'm not sure but this is my theory)