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
lys-0071 [83]
3 years ago
10

A tank sprung a leak in the water level started drop from 24.8 m at a rate of 2 m/h. Right and solve an equation to determine ho

w long it will take the water level to drop 8.8 m
Mathematics
1 answer:
malfutka [58]3 years ago
3 0

Answer:

8 hours.

Step-by-step explanation:

The initial water level is 24.8 meters, and the rate of water level drop is 2 meters/ hour, that means after t hours the water level L will be

L =24.8-2t

Now we want water level to be 8.8 meters, I.e L=8.8m, therefore, we have:

L=8.8=24.8-2t

we solve the equation for t:

8.8=24.8-2t\\8.8+2t=24.8\\2t=24.8-8.8\\2t=16\\\\\boxed{t=8}

it will take 8 hours for the water level to drop to 8.8 meters.

You might be interested in
calculate the area of cut and fill for the following road way section in sq ft and then convert to sq yd
lyudmila [28]

I can't see can you help me by making the image zoomed in more


5 0
3 years ago
Determine the standard form of the equation of the line that passes through (6, -9) and (-8, 6)
horrorfan [7]

9514 1404 393

Answer:

  A.  15x +14y = -36

Step-by-step explanation:

Since we are given two points, we can start with the 2-point form of the equation for a line.

  y = (y2 -y1)/(x2 -x1)(x -x1) +y1

  y = (6 -(-9))/(-8 -6)(x -6) +(-9)

  y = 15/-14(x -6) -9

Multiplying by -14, we have ...

  -14y = 15x -90 +126

Adding 14y-36 to both sides gives ...

  -36 = 15x +14y . . . . matches choice A

The standard-form equation is ...

  15x +14y = -36

_____

<em>Additional comments</em>

It can be easier to start with the form ...

  (Δy)x -(Δx)y = (Δy)x1 -(Δx)y1 . . . . . where Δx = x2-x1 and Δy = y2-y1

This gives ...

  (6+9)x -(-8-6)y = 15(6) +14(-9)

  15x +14y = -36 . . . simplified

__

You can also start with the slope-intercept form or the point-slope form, if you're more familiar with those. The result will be the same. I find it handy to be familiar with a number of different forms of the equation for a line.

4 0
3 years ago
Billy wants to buy a $1250 drum set and the
nadya68 [22]

Answer:

LOL i don't even know

Step-by-step explanation:

8 0
2 years ago
How many boys are in the choir​
Dafna11 [192]

9514 1404 393

Answer:

  D.  210

Step-by-step explanation:

If b is the number of boys in the choir, the ratio of boys to girls is ...

  b/150 = 7/5

  b = 150(7/5) = 30(7) = 210

There are 210 boys in the choir.

8 0
3 years ago
What does the ratio 4: 18 represent in this situation?
andrezito [222]

Answer:

2:9 or 2/9

Step-by-step explanation:

I guess this question asks the simplest form of ratio 4:18

so I divided it by two and since they cannot be divided further that's the answer

you can either choose to write it in ratio form or fraction form that's your choice good day.

8 0
1 year ago
Other questions:
  • Solve: 2x + 27 = 3x - 9
    15·1 answer
  • The value of y varies directly with x, and y = 4.5 when x = 0.5. Find y when x = 10?
    7·2 answers
  • The diagram shows a dilation of segment AB. Which
    10·2 answers
  • 0.7 bar repeater in simplest form​
    7·1 answer
  • Which expression is equivalent to (x^-4y/x^-9y^5)^-2
    8·1 answer
  • Please help i dont know how to answer this
    11·1 answer
  • Which expressions are equivalent to cos^2(105degrees) – sin^2(105°)? Check all that apply.
    8·2 answers
  • PLEASE HELP ASAP - WILL GIVE BRAINLIEST TO BEST ANSWER
    5·2 answers
  • Please answer! yes I'll mark as brainliest​
    13·2 answers
  • Help ASAP I’ll give u 42 points
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!