Answer:
-8
Step-by-step explanation:
1. x + 23 = 15
2. x + 23 = 15
-23 -23
3. x = -8
No solution because the 8w canceles out snd then it would be 5=4 which is incorrect
Answer:
1a: 1,000,000
2a: 1
3a: 6
4a: 0
5a: 1
6a: 1
7a: 9
1b: 1
2b: 1
3b: 1
4b: 1
5b: 1
6b:49
7b: 1
Step-by-step explanation:
Answer:
4 square feet
Step-by-step explanation:
Area = Length * Width
64 = 16 * W.
W = 4.
So, 4 square feet.
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Answer:
3 strain would still alive after 48 hours
Step-by-step explanation:
Initial population of virus = 40000 grams
A certain virus is dying off at a rate of 18% per hour.
We are supposed to find how much of the strain would still be alive after 48 hours
Formula : 
=Initial population
N(t)= Population after t hours
r = rate of decrease = 18% = 0.18
t = time = 48 hours
So,the strain would still be alive after 48 hours=
Hence 3 strain would still alive after 48 hours