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3 years ago

Surface area of a triangular prism formula?

Mathematics

2 answers:

madreJ [45]3 years ago

7 0

V=1/2 a *c * h
hope this helps

Murrr4er [49]3 years ago

3 0

<span>SA=bh+(s1+s2+s3)H

s1,s2,s3 are sides of prism b is base h is height</span>

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One half of a pie is cut into four equal pieces. What

olasank [31]

Answer:

1/8

Step-by-step explanation:

1/2 * 1/4 = 1/8

another way to think about it is: if there are 4 pieces in one half then you could double it and there would be 8 pieces of pie in total which would make one piece equal to 1/8

5 0

3 years ago

Read 2 more answers

Use DeMoivre's Theorem to find the indicated power of the complex number. Write the answer in rectangular form.

slava [35]

Answer:

After solving the power:

$\bold{2(cos60^\circ+isin60^\circ)}$

Rectangular form:

$\bold{1+i\sqrt3}$

Step-by-step explanation:

Given the complex number:

$2(cos20^\circ+isin20^\circ)^3$

To find:

The indicated power by using De Moivre's theorem.

The complex number in rectangular form.

Rectangular form of a complex number is given as $a+ib$ where a and b are real numbers.

Solution:

First of all, let us have a look at the De Moivre's theorem:

$(cos\theta+isin\theta )^n=cos(n\theta)+isin(n\theta )$

First of all, let us solve:

$(cos20^\circ+isin20^\circ)^3$

Let us apply the De Moivre's Theorem:

Here, n = 3

$(cos20^\circ+isin20^\circ)^3 = cos(3 \times 20)^\circ+isin(3 \times 20)^\circ\\\Rightarrow cos60^\circ+isin60^\circ$

Now, the given complex number becomes:

$2(cos60^\circ+isin60^\circ)$

Let us put the values of $cos60^\circ = \frac{1}{2}$ and $sin60^\circ = \frac{\sqrt3}{2}$

$2(\dfrac{1}{2}+i\dfrac{\sqrt3}2)\\\Rightarrow (2 \times \dfrac{1}{2}+i\dfrac{\sqrt3}2\times 2)\\\Rightarrow \bold{1 +i\sqrt3 }$

So, the rectangular form of the given complex number is:

$\bold{1+i\sqrt3}$

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3 years ago

Express the percent and decimal of 12/15

vova2212 [387]

Percent: 80%
decimal: 0.8

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3 years ago

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Simplify (a+3)-2(4+a)+5a_4<br>

Rainbow [258]

Answer:

it is 4a-9....................

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3 years ago

Which of the following lists the numbers shown above in order from greatest to least?

TiliK225 [7]

Answer:

Step-by-step explanation:

the square root of 51 = 7.141

7 square root 2 = 9.899

7 = 7

8 = 8

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4 years ago