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nevsk [136]
3 years ago
15

Which relationships have the same constant of proportionality between y and x as in the equation y=1/3x?

Mathematics
1 answer:
Marina CMI [18]3 years ago
4 0
Y and X is urgent answer
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The population of bacteria can be modeled by the function below, where t represents the time since the population started decayi
Oksana_A [137]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete. I will assume the function is:

f(t) = 15(0.86)^t

Required

Determine the rate of decay

In an exponential function f(x) = ab^x,

The decay rate of the function is calculated as:

1 - r = b

By comparison:

b = 0.86

So, the equation becomes:

1 - r = 0.86

Make r the subject

r = 1 - 0.86

r = 0.14

<em>The rate of decay is 0.14</em>

3 0
3 years ago
Q1: Identify the graph of the equation and write an equation of the translated or rotated graph in general form.
marin [14]

Answer:

C. hyperbola; 9x^2-25y^2-250y-850=0

Step-by-step explanation:

The given conic has equation:

9x^2-25y^2=225

Divide through by 225.

\frac{9x^2}{225}-\frac{25y^2}{225}=\frac{225}{225}

\frac{x^2}{25}-\frac{y^2}{9}=1

This is a hyperbola centered at the origin.

The hyperbola has been translated from the origin to (0,5).

The translated hyperbola will have equation;

\frac{(x-0)^2}{25}-\frac{(y-5)^2}{9}=1

Multiply through by 225.

9(x-0)^2-25(y-5)^2=225

Expand

9x^2-25(y^2-10y+25)=225

9x^2-25y^2+250y-625=225

Rewrite in general form;

9x^2-25y^2+250y-625-225=0

9x^2-25y^2+250y-850=0

3 0
3 years ago
(2x)² . (3x²)<br> What is the simplest form of this equation
Montano1993 [528]
Simplest form: 5x^2
7 0
3 years ago
Simplify √49 + [√81 - x(9x = 14)]
eimsori [14]

\longrightarrow{\green{- 9 {x}^{2}   +  14x + 16}} 

\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}

\sqrt{49}  + [ \sqrt{81} - x \: (9x   -  14) ] \\ \\   =  \sqrt{7 \times 7}  + [ \sqrt{9 \times 9}   - 9 {x}^{2}   +  14x] \\  \\  =  \sqrt{( {7})^{2} }  + [ \sqrt{ ({9})^{2} }  - 9 {x}^{2}  +  14x ] \\  \\  (∵ \sqrt{ ({x})^{2} } = x ) \\  \\  = 7 + (9 - 9 {x}^{2}   + 14x) \\  \\  = 7 + 9 - 9 {x}^{2}   + 14x \\  \\  =  - 9 {x}^{2}   +  14x + 16

\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{♡}}}}}

3 0
3 years ago
Which figures are polygons?<br> MORE THAN ONE CORRECT ANSWER<br><br> please explain
Dahasolnce [82]

Answer:

all of them that have more than 4 sides

5 0
2 years ago
Read 2 more answers
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