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3 years ago

Please help me with the answer

Mathematics

1 answer:

Mamont248 [21]3 years ago

3 0

Answer:

Step-by-step explanation:

Categorical data is also known as qualitative variable. It is a data that can take up one or a limited set of values. e.g race, sex, occupation.

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I need help is it a b c or d

Lunna [17]

The answer is d)3 because each number gets multiplied by 3 to qual the next number

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3 years ago

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3x+7y=-1 and 4x-3y=11 solve by elimination/linear combination

ira [324]

Solution:

1) Solve for x in 3x+7y=-1
x=\frac{-1-7y}{3}

2) Substitute x=\frac{-1-7y}{3} into 4x-3y=11
\frac{4(-1-7y)}{3}-3y=11

3) Solve for y in \frac{4(-1-7y)}{3}-3y=11
y=-1

4) Substitute y=-1 into x=\frac{-1-7y}{3}
x=2

5) Therefore,
x=2
y=-1

Done!

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3 years ago

Plz help me with this question thanks

Yuliya22 [10]

Answer:

Step-by-step explanation:

1+1

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3 years ago

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The radius of the base of a cylinder is decreasing at a rate of 121212 kilometers per second. The height of the cylinder is fixe

WARRIOR [948]

Answer:

7536 $km^3/sec$

Step-by-step explanation:

Given that:

Rate of decreasing of radius = 12 km/sec

Height of cylinder is fixed at = 2.5 km

Radius of cylinder = 40 km

To find:

The rate of change of Volume of the cylinder?

Solution:

First of all, let us have a look at the formula for volume of a cylinder.

$Volume = \pi r^2h$

Where $r$ is the radius and

$h$ is the height of cylinder.

As per question statement:

$r$ = 40 km (variable)

$h$ = 2.5 (constant)

$\dfrac{dV}{dt} = \dfrac{d}{dt}\pi r^2h$

As $\pi, h$ are constant:

$\dfrac{dV}{dt} = \pi h\dfrac{d}{dt} r^2\\\Rightarrow \dfrac{dV}{dt} = \pi h\times 2 r\dfrac{dr}{dt} \\$Putting the values:$\\\Rigghtarrow\dfrac{dV}{dt} = 3.14 \times 2.5\times 2 \times 40\times 12 \\\Rigghtarrow\dfrac{dV}{dt} = 7536\ km^3/sec$

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3 years ago

Determine if the differential equation is linear or non-linear. y''+2yy'+3y=0

Otrada [13]

Nonlinear because y is squared

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3 years ago