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2 years ago

15

What type of number is 12.25-5i

1 answer:

Radda [10]2 years ago

6 0

Answer: Imaginary number

Step-by-step explanation:

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Q # 6 please help to resolve

Rus_ich [418]

The numbers of choices in each category are multiplied together. We assume the order of paint choices matters: using color 1 in area A and color 2 in area B is not the same as using color 2 in area A and color 1 in area B.

P(7,2)*4*3*2 = 42*4*3*2 = 1008 ways

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P(n, k) = n!/(n-k)!
P(7, 2) = 7*6 = 42

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2 years ago

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Step-by-step explanation:

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Identify the number of terms in this polynomial.<br> 5k^5+7k-2

Sphinxa [80]

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2 years ago

Use the parabola tool to graph the quadratic function f(x)=(x−4)(x+2). Graph the parabola by first plotting its vertex and then

Andrew [12]

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Step-by-step explanation:

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3 years ago

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A right cylinder has a radius of 6 m and a surface area of 84 m². Find the surface area of a similar cylinder with a radius of 2

dlinn [17]

Answer:

The surface area of the second cylinder is equal to $9.33\ m^{2}$

Step-by-step explanation:

we know that

If two figures are similar then

the ratio of their surfaces areas is equal to the scale factor squared

Let

z-------> the scale factor

x------> the surface area of the smaller cylinder (second cylinder)

y-------> the surface area of the original cylinder (first cylinder)

so

$z^{2}=\frac{x}{y}$

Step 1

Find the scale factor

$z=\frac{2}{6}=\frac{1}{3}$

Step 2

Find the surface area of the second cylinder

we have

$z=\frac{1}{3}$

$y=84\ m^{2}$

substitute and solve for x

$(\frac{1}{3})^{2}=\frac{x}{84}$

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2 years ago