Answer:
[tex]Concentration = 8.26kg/m^3[/tex]
Step-by-step explanation:
Given
[tex]V = 440000L[/tex] --- volume of tank
[tex]m = 10,000 kg[/tex] --- solid mass
[tex]r = 40000L/hr[/tex] --- outflow rate
Required
Determine the concentration at the end of 4 hours
First, calculate the amount of liquid that has been replaced at the end of the 4 hours.
[tex]Amount = r * Time[/tex]
[tex]Amount = 40000L/hr * 4hr[/tex]
[tex]Amount = 40000L * 4[/tex]
[tex]Amount = 160000L[/tex]
This implies that, over the 4 hours; The tank has 160000 liters of liquid out of 440000 liters were replaced
Calculate the ratio of the liquid replaced.
[tex]Ratio = \frac{Amount}{Volume}[/tex]
[tex]Ratio = \frac{160000L}{440000L}[/tex]
[tex]Ratio = \frac{16}{44}[/tex]
[tex]Ratio = \frac{4}{11}[/tex]
Next, calculate the amount of solid left.
[tex]Amount (Solid)= Ratio * m[/tex]
[tex]Amount (Solid)= \frac{4}{11} * 10000kg[/tex]
[tex]Amount (Solid)= \frac{40000}{11}kg[/tex]
[tex]Amount (Solid)= 3636kg[/tex]
Lastly, the concentration is calculated as:
[tex]Concentration = \frac{Amount (Solid)}{Volume}[/tex]
[tex]Concentration = \frac{3636kg}{440000L}[/tex]
Convert L to cubic meters
[tex]Concentration = \frac{3636kg}{440000* 0.001m^3}[/tex]
[tex]Concentration = \frac{3636kg}{440m^3}[/tex]
[tex]Concentration = 8.26kg/m^3[/tex]
HELP PLS I SUCK AT MATH IF U HELPED U SAVED MY LIFE THANK YOU
Your family is driving to the beach. You travel 200 kilometers in the first two hours. During the next hour, you stop for lunch and only travel 25 kilometers. What was tour average speed?
A) 60 km/h
B)75 km/h
C)100km/h
D)225 km/h
Answer: B) 75 km/h (from this answer my brother told and he good at math so I hope this is Correct.)
The digit 2 in which number represents a value of 2 thousandths?
Answer:
0.002
Step-by-step explanation:
2 thousandths is in the thousandths place, which is 3 digits to the right of the decimal point. Hope this helped!
y=x^2-10x-5
what’s (x,y)
Answer:
(5, -30)
Step-by-step explanation:
Find the measurement indicated in each parallelogram.
1)
с
40°
D
E
Answer:
D=40
C=140
E=140
Step-by-step explanation:
opposite angles are congruent in parallelograms, so D is equal to 40. Also, the interior angles of any quadrilateral always equal 360, and because there are only 2 angles left that we don't know what they equal, if we add 40 to 40, which equals 80, and then subtract 80 from 360, we get 280, which we then divide by 2, to get 140 for C and E.
Can someone help me? I’ll reward points + brainalist (btw only need help with number 13)
A= B= b= what’s the answer i been trying to solve all day
Answer:
Step-by-step explanation:
We are given the triangle ABC and told to find ∠A, ∠B, and side b. Also we are told that side c= 54 . side a=64 and ∠C = 32°
we need law of sines a / sin A = b / sin B = c / sin C
let's use law of sines to find the other angles
64 / sin A = 54 / sin(32)
I'm just going to swap the fractions on both sides , just to make it easier
sin A / 64 = sin(32) / 54
∠A = arcSin(64 * sin(32) / 54)
∠A = 38.9066°
∠B + ∠A + ∠C = 180
∠B = 180 - 32 - 38.9066
∠B = 109.0934°
let's find side b now
sin B / b = sin(32) / 54
sin(109.0934°) / b = sin(32) / 54
54 * sin(109.0934°) / sin(32) = b
96.2963 = b
What is the volume of the rectangular prism 1.5" by 1" by 3.5"
Answer:
5.25
Step-by-step explanation:
3. What value of makes a true equivalent fraction statement.
5 30
54
C
Answer:
[tex]x[/tex] = 9
Step-by-step explanation:
We need to find [tex]x[/tex] which will make an equivalent fraction statement.
[tex]\frac{5}{x} = \frac{30}{54}[/tex]
5 x 6 = 30
[tex]x[/tex] x 6 = 54 (to find [tex]x[/tex] we should do 54 ÷ 6 which = 9)
So:
[tex]\frac{5}{6} = \frac{30}{54}[/tex]
[tex]x[/tex] = 9
hope this helps :)
Uri’s family has an old shower head. It releases about 5 gallons of water per minute. If Uri takes a 5-minute shower, how much water will she use? Help!
Answer:
25 gallons
Step-by-step explanation:
5 gallons per minute, 5 minutes, 5, 10, 15, 20, 25. multiple 5 by 5
Answer:
The answer is 25 gallons of water
Step-by-step explanation:
I just took the test and seriously it is correct!
Jordan needs 5 pounds of chips for a party. The bags he is buying are 24 oz each. According to the number line, how many bags will he need to buy to have at least 5 pounds?
Answer:
3.33 but he cant buy 3 and 1/3 of a bag of chips so 4
Step-by-step explanation:
Question
How many solutions does the system of nonlinear equations graphed below
have?
Answer: Look at the number of points where the graphs intersect each other...the points where the graphs of the functions cross each other are the solutions to the system. Upon looking, you should see 4 points where the graphs intersect, so there are 4 solutions to the non-linear system of equations.
Plumbing A school custodian discovered a leak in a water pipe. The custodian
1,664 fluid Ounces of water had leaked out. How many gallons of water is this? Use the conversion
1 gallon
factor
128 fluid Ounces
1,664 fluid ounces = gallons
Answer:
13 gallons of water
Step-by-step explanation:
Find the surface area of the figure
Answer:
122.30 cm²
Step-by-step explanation:
The figure is a triangular prism.
Formula for calculating surface area of a triangular prism = bh + L(S1 + S2 + S3)
Where,
b = 11 cm
h = 4.3 cm
S1 = 8 cm
S2 = 6 cm
S3 = 11 cm
L = 3 cm
Surface area = 11*4.3 + 3(8 + 6 + 11)
= 47.3 + 3(25)
= 122.3 cm²
You want to deposit 6% of $53,070.00 each year into an IRA(Individual Retirement Account). How much of your salary are you depositing in a year?
The radius of the cylindrical construction pipe is 2.5ft, if the pipe is 25ft long, what is the volume? Use the value 3.14 for pi, and round your answer to the nearest whole number. Be sure to include the correct unit in your answer
Answer:
Step-by-step explanation:
r = 2.5 ft
h = 25 ft
Volume of cylindrical pipe = πr²h
= 3.14 * 2.5* 2.5 * 25
= 490.625 {as tenth place value is ≥ 5, add 1 to the whole number}
= 491 cubic feet
Nevaeh is a cruise specialist and earned $486 commission after booking a cruise that cost $5,400. What is her rate (in %) of commission?
Pete is packing toys into boxes. Each box holds 30 toys. There are 94 toys and 3 boxes. How many extra toys are there?
Answer:
There are 4 extra toys.
Step-by-step explanation:
Hey there!
We're given the following information:
There are 94 total toys.There are 3 boxes.Each box will hold 30 toys.Therefore, we can realize that this will be a division problem since something is being put into another item:
Lone toys → toys in boxesWe have 3 boxes that will fit 30 toys each, so let's find out how many toys are accounted for with these boxes.
[tex]30 \times 3 = 90 \ \text{toys}[/tex]Now, we can just subtract the total number of toys from the accounted amount of toys.
[tex]\text{94 total toys - 90 accounted toys = 4 remaining toys}[/tex]Therefore, we know that remaining is a synonym of extra, so there are a total of four toys that are left over.
Answer:
4
Step-by-step explanation:
90/30 = 3 boxes
94-90 = 4 extra boxes
The homecoming dance committee plans to conduct a survey to determine
the student body's opinion on a theme for the dance. Which sampling method
would be most likely to result in nonresponse bias?
A. Handing a survey to all the students who attended the previous
year's homecoming dance
B. Entering a second-period math class and surveying all the
students in that class
C. Standing at the school entrance and surveying every 5th student
that walks in
D. Emailing a survey to all students, but only freshman girls respond
Answer: It's D
Step-by-step explanation:
Answer:
Step-by-step explanation:
Entering a second-period math class and surveying all the students in that class
What is the least common multiple of 41 and 50?
PLEASE HELP ME!!!!!!!
Answer:
2050
Step-by-step explanation:
Please SHOW YOUR WORK!
Thanks In Advance, Will Mark Brainliest!
Identify the angles (Interior vs Exterior)
Please help! I will give you a heart !
Help! ITS IMPORTANT FOR ME PLEASE!!
Answer:
x= 69 - 55
×=14
I think this helpful for you
Answer:
x = 124 degree
Step-by-step explanation:
Sum of all interior angles of triangle = 180
69+55= 124
Therfore third angle, 180-124= 56
Linear pair= 180
180-56= 124 degree
therefore x= 124 degree
Mark as brainliest
You are baking a casserole. The recipe calls for of a cup of beans to
make 5 servings. How many cups of beans would you need to make 25
servings?
Answer: 5 cups of beans
Step-by-step explanation:
25/5=5
OR
5•5=25
There are 900 students at a school. You receive two thirds of he votes for best student ever! About how many
votes would you expect to receive?
Answer:
~600 votes
Step-by-step explanation:
Notice how 900 is a multiple of 3. Multiplying by 2/3 is the same as saying as divide the total by 3, then multiply that result by 2. Thusly, 900/3=300 and 300*2=600. Therefore, you should expect around 600 votes.
If I helped, a brainliest would be greatly appreciated!
Which model is 85% shaded?
Done
Answer:
I would need to see the models to answer this question.
Answer:
?
Step-by-step explanation:
1) Una bicicleta circula en línea recta a una
velocidad de 15km/h durante 45 minutos. ¿Qué
distancia recorre?
Answer:
the distance covered is 11.25 km
Step-by-step explanation:
Given that
The speed of the bicycle is 15 km/h
And, the time taken of the bicycle is 45 minutes
We need to determine the distance covered
As we know that
Speed = Distance ÷ Time
So, distance = Speed × time
= 15 km /h × 0.75 hours
= 11.25 km
The 0.75 hours come from
= 45 minutes ÷ 60 minutes
= 0.75 hours
Hence, the distance covered is 11.25 km
Please help, I don't understand anything about this question so I need a step-by-step answer so I am able to understand.
Answer:
First box, 0.8 - Green
Second Box - 0.4 - not green
Last box ( Bottom) - 0.7 - not green
b) 0.8
c) 0.3
d) 0.8 X 0.6 = ?? ( use calc)
e) (0.8 X 0.4 ) + (0.2 x 0.7) = Ans
Step-by-step explanation:
Just know probability will always add up to 1 no mater what!!!
Write an equation in slope-intercept form for the line shown.
Answer:
this is the answer
Step-by-step explanation:
hope it helped!!!
4. He drove at Puerto Princesa City to Taytay at an average speed of 40 kph
How far did he travel?
The journey lasted for 5 hours and 15 minutes.
Kart bought a new motorcycle.
Problem
Solution
Step-by-step explanation:
Distance = Speed x Time
Given Distance = 40km/h or kph
Time = 5 hours 15 minutes
=
[tex]5 \frac{15}{60} \\ = 5 \frac{1}{4} \\ = 5.25hours [/tex]
Distance Travelled = 40 kph x 5.25 hours
= 210km