Answer:
a) 513775.5 m^3 ≈ 51.38 * 10^4 m^3
b) 256887.75 m^3 ≈ 25.69 * 10^4 m^3
Step-by-step explanation:
Given data :
Depth of pond = 2m
flow in the stream = 20 cfs = 4.8931 * 10^4 m^3/day
settling rate = 0.2 m/day
rate constant ( k )= 0.2 / 2 = 0.1 / day
steady-state removal of the solids required = 65%
A) determine size of a single CSTR to achieve 65%
First determine the time required to achieve this using the relation below
C = [tex]c_{o} e^{-kt}[/tex]
∴ t = [tex]\frac{-1}{k}* ln( 1 - 0.65 )[/tex]
= ( -1 / 0.1 ) * (- 1.05 ) = 10.5 day
The size of a single CSTR required = ( 4.8931*10^4 ) * (10.5 ) = 513775.5 m^3
B) determine the sizes of a pair of identical CSTRs in series needed to achieve the desired removal
sizes of a pair = 513775.5 / 2 = 256887.75 m^3
What is the classification of the pair of angles shown?
(5 Points)
34°
146°
Answer: its H
Step-by-step explanation:meaning its Supplementary
Help please!!!! Ahahha help me
what is 235% of 82
please hurry!!
Answer:
192.7
Step-by-step explanation:
What is the y-coordinate of the solution to this system of equations?
5x-8y=1
3x+6y=-21
At the City Zoo, of the zoo is set aside for the monkeys. There are 4 different monkeys, each
with an equal-sized area. What fraction of the zoo is set aside for one monkey area?
Can someone plz answer me...
A.1/4
B.4/15
C.1/13
D.1/36
i think part of this question is missing between “at the city zoo” and “of the zoo.”
but i think the answer could be a.
because if there are 4 different monkeys, and they all got 1/4 of space, it would be equal.
Which is used to determine if a relation is a function?
a.)3d line test
b.)horizontal line test
c.)diagonal line test
d.)vertical line test
Answer:D
Step-by-step explanation:
Mica takes a train to visit a friend. The graph shows Mica's trip from his home in New Jersey to his friend's home in Maine. Which part of the graph shows Mica's wait at the train station in New Jersey?
could be wrong but, go for II
Answer:
II
Step-by-step explanation:
What is a formula for the nth term of the given sequence?
3,5,7...
Answer:
You can always find the 'nth term' by using this formula: nth term = dn + (a - d) Where d is the difference between the terms, a is the first term and n is the term number.
im 99% sure that this is the correct answer
Answer: You are correct. The answer is choice A. Nice work.
Explanation:
Assuming Ramon did his steps correctly, ending up with 53 = 477 means that the original equation doesn't have any solutions.
Consider an example such as x+5 = x+6
We can subtract x from both sides to end up with 5 = 6, but that's a false statement. So no value of x can be plugged into x+5 = x+6 to lead to a solution. This idea applies to Ramon's original equation. The equation 53 = 477 is a contradiction (the left side contradicts the right side since the numbers don't match).
Can you help me find surface area of this prism?
Answer:
400 cm²
Step-by-step explanation:
Triangles: 1/2x15x8=60 (two of those)
Base: 8x7=56
Back: 15x7=105
Sloped side: 7x17=119
60+60+56+105+119=400 cm²
In the triangle below,
x= [ ? ]°. Round to the nearest tenth. ANSWER ASAP!!!
Answer:
2
Step-by-step explanation:
Answer:
Your answer would be 2
Step-by-step explanation:
I would explain but its too hard
What percent of 84 is 12? Round to the nearest whole number.
please hurry! i have until 2:15 and it’s 2:12!!
Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers. Evaluate the following expression. 7^0
Solve for T
48 = - 12t
t =
Answer:
t=-4
Step-by-step explanation:
48/-12
Answer:
48=-12t
We simplify the equation to the form, which is simple to understand
48=-12t
We move all terms containing t to the left and all other terms to the right.
+12t=-48
We simplify left and right side of the equation.
+12t=-48
We divide both sides of the equation by 012 to get t.
t=-4
Please answer quick I give 20 points
Answer: The answer is A
Step-by-step explanation:
Gabriel went shopping for a new camera. The listed price of the camera was $37, but the price with tax came to $40.33. Find the percent sales tax.
Answer: 9% sales tax
Step-by-step explanation: 40.33-37=3.33
so, now we got to divide 3.33 by 37 (3.33/37) and that = 0.09. Now we got to do 0.09x100 and you get 9%. So basically, subtract, divide, and multiply by 100
the population of the town is 20000 it decreases at a rate of 9% per year in about how many years will the population be fewer than 13000
Answer:
Go here
Step-by-step explanation:
https://brainly.com/question/19678086#:~:text=Step%2Dby%2Dstep%20explanation%3A&text=thats%201%20year.,thats%202%20years.
Answer:
4 years
Step-by-step explanation:
9% of 20,000 is 1,800. So, if you keep subtracting 1,800 from 20,000, it will take 4 times until you get to 12,800, which is as close as you can get to 13,000 in this scenario.
(8x^2 – 7x – 2) – (6x^2 – x + 3)
Answer: = -2x-5
Step-by-step explanation:
Need help supper fast pls
Pls help extra points and mark brainlist
Answer:
I think the answer is 3/4^2
Answer:
1/2
Step-by-step explanation:
Help ASAP!! I will mark you brainliest
Answer:
2 turning points
Step-by-step explanation:
There are two places where the graph goes from increasing to decreasing then back to increasing. Hope this helps :)
a factory can fill 25 containers of pizza every minute. All of the containers are the same size. How many minutes will it take the machine to fill 900 container?
Answer:
1,600
Step-by-step explanation:
how you show do it is ADD
900
TO
25 AND YOU WILL GET YOUR ANSWER
Type the correct answer in the box. Use numerals instead of words.
Divide.
2,254 : 23 =
Answer:
98
Step-by-step explanation:
Divide.
Hope I helped!
I literally have no clue how to do this.
Answer:
Step-by-step explanation:
Sine is opposite divided by the hypotenuse.
sin(30) = 9/y
1/2 = 9/y
y = 18
Cosine is adjacent divided by the hypotenuse
cos(30) = x/18
[tex]\frac{\sqrt{3} }{2}=x/18\\x=9\sqrt{3}=15.6[/tex]
Why do you think it’s important for students to learn about math
Answer:
Step-by-step explanation:
Math is in our everyday lives. We calculate and use math in our daily lives without knowing it. By learning math, we build on useful knowledge that will help us have a better future. For example, learning how to pay taxes acquire math. Grocery shopping needs you to find the cost of the product you’re buying. When we learn math, we gain knowledge and we can pass that knowledge to our future generations so more and more people can use it to find better jobs, make your life easier, and so much more. Therefore, that is why it is important for students to learn about math.
The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is 31 hours and the median is 27.2 hours. Twenty-four of the families in the sample turned on the television for 16 hours or less for the week. The 7th percentile of the data is 16 hours. Step 2 of 5 : Approximately how many families are in the sample
Answer:
There are approximately 343 families in the sample.
Step-by-step explanation:
xth percentile:
A measure is said to be in the xth percentile if it is greater than x% of the measures.
Twenty-four of the families in the sample turned on the television for 16 hours or less for the week. The 7th percentile of the data is 16 hours.
This means that 7% of the sample size n is 24. So
[tex]0.07n = 24[/tex]
[tex]n = \frac{24}{0.07}[/tex]
[tex]n = 342.86[/tex]
Rounding up, there are approximately 343 families in the sample.
It’s due late tonight can some pls help me pass
Answer:
a
Step-by-step explanation:
if you look the less bought the more it cost the more bought the less
Help me plsssssssssssssssssssssss
Answer:
Step-by-step explanation:
Is these type of questions the decimal, (the little dot between the numbers) is really important.
2.094<=>2.702 In both of the equations there is a 2, and then the decimal, what numbers are next? 7, and 0. Which one of those it bigger? 7!!!!
so 2.094<2.702
Solve for the value of t.
Answer:
t=24
Step-by-step explanation:
180-49°-90°=41
2(t)-7=41
t=24
Answer:
I'm sorry
Step-by-step explanation:
find another person on here or just copy and paste the whole thing into brainy.
Behavior patterns which are already present at birth are called ____
Answer:
instincts
Step-by-step explanation:
i luv u!