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
noname [10]
2 years ago
13

HELP ME I MARK BRAIN THING

Mathematics
2 answers:
disa [49]2 years ago
7 0

Answer:

your answer will be B

Step-by-step explanation:

have a nice day/night !!!

Shtirlitz [24]2 years ago
3 0

Answer:

A

Step-by-step explanation:

it is joined so it is symmetrical

You might be interested in
Which graph represents the solution set of the system of inequalities?
Lyrx [107]
The answer to this is D
4 0
3 years ago
Read 2 more answers
A 100 gallon tank initially contains 100 gallons of sugar water at a concentration of 0.25 pounds of sugar per gallon suppose th
Vsevolod [243]

At the start, the tank contains

(0.25 lb/gal) * (100 gal) = 25 lb

of sugar. Let S(t) be the amount of sugar in the tank at time t. Then S(0)=25.

Sugar is added to the tank at a rate of <em>P</em> lb/min, and removed at a rate of

\left(1\frac{\rm gal}{\rm min}\right)\left(\dfrac{S(t)}{100}\dfrac{\rm lb}{\rm gal}\right)=\dfrac{S(t)}{100}\dfrac{\rm lb}{\rm min}

and so the amount of sugar in the tank changes at a net rate according to the separable differential equation,

\dfrac{\mathrm dS}{\mathrm dt}=P-\dfrac S{100}

Separate variables, integrate, and solve for <em>S</em>.

\dfrac{\mathrm dS}{P-\frac S{100}}=\mathrm dt

\displaystyle\int\dfrac{\mathrm dS}{P-\frac S{100}}=\int\mathrm dt

-100\ln\left|P-\dfrac S{100}\right|=t+C

\ln\left|P-\dfrac S{100}\right|=-100t-100C=C-100t

P-\dfrac S{100}=e^{C-100t}=e^Ce^{-100t}=Ce^{-100t}

\dfrac S{100}=P-Ce^{-100t}

S(t)=100P-100Ce^{-100t}=100P-Ce^{-100t}

Use the initial value to solve for <em>C</em> :

S(0)=25\implies 25=100P-C\implies C=100P-25

\implies S(t)=100P-(100P-25)e^{-100t}

The solution is being drained at a constant rate of 1 gal/min; there will be 5 gal of solution remaining after time

1000\,\mathrm{gal}+\left(-1\dfrac{\rm gal}{\rm min}\right)t=5\,\mathrm{gal}\implies t=995\,\mathrm{min}

has passed. At this time, we want the tank to contain

(0.5 lb/gal) * (5 gal) = 2.5 lb

of sugar, so we pick <em>P</em> such that

S(995)=100P-(100P-25)e^{-99,500}=2.5\implies\boxed{P\approx0.025}

5 0
3 years ago
I need help with math!!!!
PilotLPTM [1.2K]

Answer:

id say caculate :) 649.99 and 20% and the same for the others

Step-by-step explanation:

7 0
3 years ago
Simplify the expression.<br> 4x+6-7x
podryga [215]

Answer:

-3x+6

Step-by-step explanation:

6 0
3 years ago
Kong took 15\%15%15, percent fewer seconds than Nolan took to complete his multiplication timed test. Kong took 858585 seconds.
netineya [11]

Answer:

Nolan's time is 100 seconds.

Step-by-step explanation:

Kong took 85 seconds.

Nolan took x seconds.

Kong took 15% fewer seconds than Nolan, so Kong's time is 85% of Nolan's time.

Kong's time is

85% of x or 0.85x

Kong's time is 85 seconds

0.85x = 85

x = 85/0.85

x = 100

Nolan's time is 100 seconds.

3 0
2 years ago
Other questions:
  • 3/4+n=-5/2 whats the answer for n
    7·2 answers
  • 1. If 3x + 4y =0 and x= 2y -5 , find the value of (X,y). 2. The sine of an angle is the ratio of the opposite to the? 3. Calcula
    10·1 answer
  • A.The observation deck of tall skyscraper 370 m above the street. Determine the time required for a penny to free fall from the
    9·1 answer
  • Bank service charges are automatically deducted from the bank account, why are these recorded in the cash payments journal
    15·1 answer
  • Have a question!!! Need help!!!!!! Are these correct???? Or Not????
    5·1 answer
  • 5.
    14·1 answer
  • -1= p - 1<br> Can you help me?
    7·2 answers
  • A closed circle on the number line means that the number ______________________ a possible solution.
    9·2 answers
  • 220 cm<br> 110 cm<br> 34 cm<br> 22 cm<br> What is the area of this trapezoid?<br> square centimeters
    6·1 answer
  • Suppose that 10 years ago you bought a home for $130,000 paying 10% as a down payment, and financing the rest at 9% interest for
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!