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
valentinak56 [21]
3 years ago
12

Can someone tell me if im right? PLEASE DONT JUST SAY YES if you don’t know

Mathematics
1 answer:
tia_tia [17]3 years ago
3 0

Answer: You are incorrect, the slope is correct, but the actual y-intercept is 205 ft.

Then the equation is:

y = (-15 ft/min)*x + 205 ft

Step-by-step explanation:

Ok, let's solve this.

We know that water is drained from a reservoir, let's assume that we can model this situation with a linear relation:

y = a*x + b

Where x is time, y is the height of the water in the reservoir, a is the slope (in this case represents how much changes the height of the water in the reservoir in one unit of time) and b is the initial height of the water in the reservoir.

We know that for a line that passes through the points (x₁, y₁) and (x₂, y₂) the slope is:

a = (y₂ - y₁)/(x₂ - x₁)

For this particular case we know that after 2 minutes the height of the water is 175 ft, then we have the point (2 min, 175 ft)

and after 5 minutes (so 7 minutes in total), the height of the water is 100ft, then: (7 ft, 100ft)

Then the slope of this:

a = (100 ft - 175 ft)/(7 min - 2 min) = (-75ft/5min) = - 15 ft/min

Then our line is something like:

y = (-15ft/min)*x + b

To find the value of b, we can use the fact that when x = 2 min, y = 175 ft

So if we replace these two values in the equation we get:

175ft = (-15 ft/min)*2 min + b

175 ft = -30 ft + b

175 ft + 30 ft = b                  

(here is your problem, it seems like you subtracted instead of adding in this part)

205 ft = b

Then the equation is:

y = (-15 ft/min)*x + 205 ft

So you are incorrect (but only for a little bit), you computed wrong the y-intercept.

You might be interested in
The total bill for the drinks and pizza comes out to be $17.28. How much should each person pay if they are to share the total b
sleet_krkn [62]

Answer:

5.76

Step-by-step explanation:

17.28/3

5 0
1 year ago
Read 2 more answers
-10+8x=70 Anyone have the answer for these <br><br><br><br> 142+x x+62
Naddik [55]

Answer:

Step-by-step explanation:

U need to think

7 0
3 years ago
Simplify the problem 2/sqrt 5
AURORKA [14]
2/sqrt 5

by rationalising the denominator,

2/sqrt 5 × sqrt 5/sqrt 5

= 2(sqrt 5)/sqrt 5(sqrt 5)

= 2 sqrt 5/5

-

hope this helps! :))))
7 0
3 years ago
HELP PLS ILL MARK BRAINLIEST
Lunna [17]

Answer:

3rd one

Step-by-step explanation:

3 0
3 years ago
I need help on numbers 17&amp;18.
jekas [21]
I don't know if this is just my phone, but the picture won't load.

You could try posting a new picture? Or feel free to message me with the picture and I'll be glad to help! :)
5 0
3 years ago
Read 2 more answers
Other questions:
  • The football team needs to raise at least $7,000 for new football uniforms. An anonymous donor gave the team $1,250 toward their
    15·1 answer
  • The measure of an obtuse angle is
    12·2 answers
  • The Art Club wants to paint a rectangle-shaped mural to celebrate the winners of the track and field meet. They design a checker
    15·1 answer
  • calculate the area of cut and fill for the following road way section in sq ft and then convert to sq yd
    14·1 answer
  • If a Biro costs 12.50naira. How many biros can buy with 300 naira?​
    7·2 answers
  • Help, help, help! Quick Answer, please!
    11·1 answer
  • Simplify <img src="https://tex.z-dn.net/?f=%5Cfrac%7B4%7D%7B%5Csqrt%7B6%7D%20%7D" id="TexFormula1" title="\frac{4}{\sqrt{6} }" a
    11·1 answer
  • Factor 7x3y4−7x2y5 completely.
    12·1 answer
  • A laundry basket has 24-shirts in it. Four are navy, 12 are red, and the remaining are white. What is the probability of not sel
    8·2 answers
  • <img src="https://tex.z-dn.net/?f=A%3D4%5Cpi%20r%5E2" id="TexFormula1" title="A=4\pi r^2" alt="A=4\pi r^2" align="absmiddle" cla
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!