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katrin [286]
3 years ago
12

What's the linear equation?

Mathematics
2 answers:
sergejj [24]3 years ago
7 0
If you are speaking in point-slope form, y=(3/4)x-1 because, to get your slope you go up and over, and your y-intercept is -1.
kumpel [21]3 years ago
6 0
Y=3/4x -1 is the equation :)
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Multiply 8 by 10, then subtract t from the result
faltersainse [42]

Answer:

80-t

Step-by-step explanation:

8(10)=80

80-t

Not sure if this is what you mean... please attach a picture to your question.

3 0
2 years ago
Which shows the expressions in the order they would appear on a number line from least to greatest?
Ganezh [65]
2^3 = 8
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sqrt 20 = 4.47
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least to greatest : 11/9, sqrt 5 , sqrt 11 , sqrt 20, 2^3
7 0
3 years ago
A rectangular, above-ground swimming
gregori [183]
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3 0
3 years ago
Suppose that a large mixing tank initially holds 400 gallons of water in which 70 pounds of salt have been dissolved. Pure water
Setler79 [48]

Answer:

Step-by-step explanation:

Given that a large mixing tank initially holds 400 gallons of water in which 70 pounds of salt have been dissolved. Pure water is pumped into the tank at a rate of 4 gal/min, and when the solution is well stirred, it is then pumped out at the same rate.

Let Q(t) be the quantity of salt at time t.

Q(0) = 70 pounds

Inflow of water = outflow = 4 gal/min

So resulting volume of tank at time t = 400 gallons

Rate of change of salt = inflow - outflow

= 0 - \frac{Q(t)}{400}

i.e. \frac{dQ}{dt} =\frac{-Q(t)}{400}

This is a variable separable equation

\frac{dQ}{Q}=-\frac{dt}{400} \\ln Q = {-\frac{t}{400}} +C\\Q = A e^{-\frac{t}{400}}

Use when t =0 Q = 70

A =70

So A(t) = Q(t) = 70 e^{-\frac{t}{400}} and

A(0) = Q(0) = 70 lbs.

7 0
3 years ago
What is the rate of change for the graph shown below?
VikaD [51]

Answer:

-3/4

Step-by-step explanation:

the rate of change is the slope of the line

7-3/0-(-4) = -3/4

8 0
3 years ago
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