A group of scientist study the effect of chemical on Various strains of bacteria. Strain A started with 6000 cells and decreases at a constant rate of 2000 cells per hour after the chemical was applied. strain B started with 2000 cells and decreased at a constant rate of 1000 cells per hour after the chemical was applied. when will just strains have the same number of cells? explain
Answers
number in a=6000-2000x where x=number of hours
number in b=2000-1000x
when will a=b
so set them equal to each other and solve
6000-2000x=2000-1000x
subtract 6000 from both sdies
-2000x=-4000-1000x
add 1000x to both sdies
-1000x=-4000
multiply -1
1000x=4000
divide by 1000
x=4
in 4 hours, they will be the same, but, their numbers will be negative, so there is actually no real life time when they will be the same observe
1 hour: a=4000, b=1000
2 hour a=2000 b=0
3 hour a=0 b=-1000
4 hour a=-2000 b-=-2000
but you can't have -2000 cells, you can only have 0 or more than 0
Final answer:
Strain A and Strain B will have the same number of cells after 2 hours.
Explanation:
To find out when the two strains of bacteria will have the same number of cells, we need to calculate the time it takes for each strain to reach the same cell count. Let's start with Strain A, which decreases at a rate of 2000 cells per hour. We can set up an equation:
6000 - 2000t = 2000
Solving for t, we find that it will take 2 hours for Strain A to reach the same cell count as Strain B. Therefore, the two strains will have the same number of cells after 2 hours.
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The probability that Janice will attend math class today is 62%. The probability that Ellie will attend math class if Janice attends is 100%. Ellie will not attend the class unless she hears from Janice first. What is the probability that both will attend the class?A. 73% B. 100% C. 81% D. 62%
1.a crew took 24 days to complete 40% of a job; how much additional time to complete the job? 34,35,36 or 38 days?2.a gas tank is 3.6 full. it takes 90 gallons to fill the tank. the total number of gallons the tank can hold is? 50, 89, 144 or 225?
The equation for the circle below is x2 + y2 = 100. What is the length of thecircle's radius?
What is the area of a circle with a radius of 1 foot?
Answers
To calculate this, we will use proportion.
If 190 beats per minute are 100%, how many beats per minute are 70%:
190 bpm : 100% = x : 70%
Thus, Xanthe's target heart rate is 133 beats per minute.
Answer:
133
Step-by-step explanation:
Answers
Answer:
Each bottle of juice costs $1.34.
Step-by-step explanation:
From the information given, the equation would indicate that the total cost is equal to the price per bag of popcorn for the number of bags plus the price per pack of juice bottles for the number of packs.
Total cost=(1.68*1)+15x
Total cost=1.68+15x
Now, you can replace the total cost with $21.78 and solve for x:
21.78=1.68+15x
21.78-1.68=15x
20.1=15x
x=20.1/15
x=1.34
According to this, the answer is that each bottle of juice costs $1.34.
Final answer:
The cost of each bottle of juice is $1.02
Explanation:
Let's use "x" to represent the cost of each juice bottle in dollars. Sebastian bought a 15-pack of juice bottles, so the total cost of the juice bottles can be calculated as 15x dollars. He also bought a bag of popcorn for $1.68.
Therefore, the total cost before tax, which is $21.78, can be expressed as the sum of the cost of the juice bottles and the cost of the popcorn:
Total Cost = Cost of Juice Bottles + Cost of Popcorn
$21.78 = 15x + $1.68
Now, we can isolate "x" by subtracting $1.68 from both sides of the equation:
$21.78 - $1.68 = 15x
$20.10 = 15x
To find the cost of each juice bottle (x), we divide both sides by 15:
x = $20.10 / 15
x = $1.02
So, each bottle of juice costs $1.02.
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Answers
Answers
Answer:
We have parallelogram ABCD and line AE, so:
z = x = 64
y = 180 - 64 = 116
((attachment))
Answers
equation to use is C=cos^-1 [a^2+B^2+-2^2 /2ab
A=21
B=33
C=36
21^2+33^2-36^2
21^2=441
33^2=1089
36^2=1296
441+1089=1530
1530-1296=234
234/2=117
cos^-1*117=80.28
rounded gives you 80.3, hope this helps :D
Answers
Then, 12/14 - 3/14 = 9/14.