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
xxMikexx [17]
3 years ago
14

The graph below shows the water level of a tank that is emptying over time.

Mathematics
1 answer:
Allisa [31]3 years ago
3 0
From inspecting the graph, you can identify the y-intercept and the slope of the line shown.

The y-intercept is 200 gallons.
The slope is 

             75-200
    m = ------------- = -12.5 gallons/minute
               10 -  0

Thus, y = 200 gallons - [12.5 gallons/minute ]t

To answer the 2nd question, let t = 12 minutes and calculate y(12).

To determine how long it wld take to empty the tank, set the above formula equal to zero and solve the resulting equation for t.
You might be interested in
Help please: A bus and a train leave a station at the same time, t = 0. The graph shows the bus's distance to the next station o
Nonamiya [84]

Answer:

y = (5/2)x + 20

Step-by-step explanation:

Since the bus and train are both at the station at time 0, the y-intercept for the new equation is 20. That is one point on the new graph: (0,20) The question said that the train travels faster, that means it spends less time getting to the next station. The existing graph shows the bus got to the next station in 10 minutes, so maybe the train got there in 8 minutes. So another point on the graph is (8,0) We can use a slope formula to calculate the slope of a new line. Or just count squares on the graph (se image) to find the slope. Slope tells how steep a line is, whether the line is going up or down, but also the slope is like directions how to get from one point to another point on the line.

All you need to write an equation is the slope, m and the y-intercept, b and fill those two numbers into the formula y=mx+b Here slope is 5/2 and y-intercept is 20. So you get

y=(5/2)x +20

5 0
2 years ago
Simplify the radical expression by rationalizing the denominator.9 square root of 25 divided by the square root of 50
Crank
(9√25) /√50 = 9*5/√50 now simplify the denominator. √50=√25*√2=5√2
so (9*5)/(5√2) simplifies to 9/√2. To rationalize the denominator multiply both the numerator and the denominator by √2.
9√2/(√2*√2) = 9√2/2

4 0
3 years ago
Read 2 more answers
A university's freshman class has 5000 students. 50% of those students are majoring in Computer Science. How many students in th
Mazyrski [523]
2500 students are computer science majors
4 0
3 years ago
Find the value of x. Round you answer to the nearest tenth.<br> 20<br> 18<br> X
Zielflug [23.3K]

Answer:

  21.9

Step-by-step explanation:

The altitude of an isosceles triangle bisects the base. So, x represents the hypotenuse of a right triangle with legs of 9 and 20. It can be found using the Pythagorean theorem:

  x^2 = 9^2 +20^2 = 81 +400

  x = √481 ≈ 21.932

The length x is about 21.9 units.

4 0
3 years ago
Lauren makes bracelets using small beads. She uses
Rzqust [24]

Answer:

420

Step-by-step explanation:

She uses 60 beads per bracelet and is making 7 bracelets

7*60 = 420 beads total

7 0
3 years ago
Other questions:
  • A square is inscribed in a circle with a diameter of 12 cm. If a point in the circle is chosen at random, what is the probabilit
    8·1 answer
  • 4x^2-24x+4y^2+72y=76
    8·1 answer
  • What is the area of something that is 2 inches long and 5/6 inches wide
    11·1 answer
  • What’s the distance between (3,6) and (3,-4)
    10·1 answer
  • Please help me struggling
    10·1 answer
  • How old am i if 300 reduced by 2 times my age is 288?
    6·1 answer
  • The diagram shows the locations of Noah and Ben after swimming in different directions from a
    6·1 answer
  • Find the slope of the line whose equation is 2x + y = 5.
    6·1 answer
  • Substitute a = 4, b = 1 and c = 5 into the expressions:<br> a + b - c
    11·1 answer
  • La linea punteada en la figura muestra un corte realizado a un triángulo. El corte es Paralelo A La Base Y Se Corta Por La Mitad
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!