1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frez [133]
2 years ago
7

Look at the question below.

Mathematics
2 answers:
Scorpion4ik [409]2 years ago
8 0

Answer:

A: 4p-16

Hope this helps!

Step-by-step explanation:

you have to multiply the 2 to 4p and 8 which gives you 8p-16 and then subtract 4p and that give you 4x-16.

lara [203]2 years ago
6 0

Answer:

A

Step-by-step explanation:

2(4p-8)-4p is simplified to : 4p-16

You might be interested in
A tank with a capacity of 1000 L is full of a mixture of water and chlorine with a concentration of 0.02 g of chlorine per liter
faltersainse [42]

At the start, the tank contains

(0.02 g/L) * (1000 L) = 20 g

of chlorine. Let <em>c</em> (<em>t</em> ) denote the amount of chlorine (in grams) in the tank at time <em>t </em>.

Pure water is pumped into the tank, so no chlorine is flowing into it, but is flowing out at a rate of

(<em>c</em> (<em>t</em> )/(1000 + (10 - 25)<em>t</em> ) g/L) * (25 L/s) = 5<em>c</em> (<em>t</em> ) /(200 - 3<em>t</em> ) g/s

In case it's unclear why this is the case:

The amount of liquid in the tank at the start is 1000 L. If water is pumped in at a rate of 10 L/s, then after <em>t</em> s there will be (1000 + 10<em>t</em> ) L of liquid in the tank. But we're also removing 25 L from the tank per second, so there is a net "gain" of 10 - 25 = -15 L of liquid each second. So the volume of liquid in the tank at time <em>t</em> is (1000 - 15<em>t </em>) L. Then the concentration of chlorine per unit volume is <em>c</em> (<em>t</em> ) divided by this volume.

So the amount of chlorine in the tank changes according to

\dfrac{\mathrm dc(t)}{\mathrm dt}=-\dfrac{5c(t)}{200-3t}

which is a linear equation. Move the non-derivative term to the left, then multiply both sides by the integrating factor 1/(200 - 5<em>t</em> )^(5/3), then integrate both sides to solve for <em>c</em> (<em>t</em> ):

\dfrac{\mathrm dc(t)}{\mathrm dt}+\dfrac{5c(t)}{200-3t}=0

\dfrac1{(200-3t)^{5/3}}\dfrac{\mathrm dc(t)}{\mathrm dt}+\dfrac{5c(t)}{(200-3t)^{8/3}}=0

\dfrac{\mathrm d}{\mathrm dt}\left[\dfrac{c(t)}{(200-3t)^{5/3}}\right]=0

\dfrac{c(t)}{(200-3t)^{5/3}}=C

c(t)=C(200-3t)^{5/3}

There are 20 g of chlorine at the start, so <em>c</em> (0) = 20. Use this to solve for <em>C</em> :

20=C(200)^{5/3}\implies C=\dfrac1{200\cdot5^{1/3}}

\implies\boxed{c(t)=\dfrac1{200}\sqrt[3]{\dfrac{(200-3t)^5}5}}

7 0
3 years ago
What is it? Eighty-six divided by six??
bixtya [17]
The answer is 14.33333 but you will have to round which you will just have 14.3
6 0
3 years ago
Read 2 more answers
Solve the equation for x, and enter your answer below.<br>7 x -5= 65​
Sedaia [141]

x=10

Step-by-step explanation:

7x - 5=65

+5 +5 so the 5's cancel so add 5 to 65

7x =70 because you add 5 to 65 to get 70

7x 7

7 x cancels out so you answer will be

x=10

3 0
3 years ago
Read 2 more answers
I really need help with this!!!
netineya [11]
2 because is isisisisisisisisis
5 0
3 years ago
Please help you guys
Svetach [21]

Answer:

It should be 21.1

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • How do you find x ,y and z in a triangle
    5·1 answer
  • On the 1st of January 2014, Carol invested some money in a bank account. The account pays 2.5% compound interest per year. On th
    15·1 answer
  • Kay's mother taught her how to make handmade ornaments to sell at a craft fair. Kay rented a table at
    11·1 answer
  • PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
    15·1 answer
  • 156 is even or odd number
    14·1 answer
  • How would u solve this
    9·1 answer
  • HELP ASAP FIRST CORRECT ANSWER GETS BRIANLEST. <br><br>solve for the angle C. A=110° B=×° C=(×+10)​
    7·1 answer
  • A person makes a mistake when copying information regarding a particular triangle. The copied information is as follows: Two sid
    15·1 answer
  • Which is the solution of the quadratic equation (4y – 3)2 = 72? y = StartFraction 3 + 6 StartRoot 2 EndRoot Over 4 EndFraction a
    8·2 answers
  • the rives family plans to travel to the beach for a summer vacation family s pin $67.50 for 23 gallons of gasoline to the neares
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!