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adell [148]
2 years ago
9

Help and explain please!

Mathematics
2 answers:
Ivan2 years ago
7 0

Answer:

84

Step-by-step explanation:

In order to do this you have to understand PEMDAS, which stands for Parentheses,Exponents,Multiplication,Division,Addition,Subtraction. This basically tells us what order we have to do the equation in. So first up, do we have any parentheses? No. Do we have any exponents? No. Okay now, this is what you have to understand. Multiplication and division are on the same level, meaning that if there is any multiplication or division, we do whatever comes first. This also goes for addition and subtraction.

This might sound a bit confusing but let's try! Since division is first, let's do it.

36 divided by 2 is 18.

That means the equation is...

18 x 4+12.

Since multiplication comes after, let's do multiplication now.

18 x 4 =72.

That means the equation is now...

72+12.

Now, our final step is to do addition, so 72+12=84. The answer is 84!

Igoryamba2 years ago
6 0
84, first you multiply and divide then you add
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Answer:

P(2 quarters) = 19/ (13*16) = 19/208  = 0.0913

Step-by-step explanation:

probability of getting 2 quarters?

ok

first draw:  there are 20 quarters to choose from

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so Total coins are 65 coins

P(2 quarters) = P( 1st quarter)* P(2nd quarter)

P(2 quarters) =  20/65   *   (19/64)

P(2 quarters) = 4/13 *  19/64

P(2 quarters) = 19/ (13*16) = 19/208

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3 years ago
PLS HELP WITH THIS MATH
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2 years ago
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Simplify the given expression below 4/3-2i
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So-called simplifying, really means, "rationalizing the denominator", which is another way of saying, "getting rid of that pesky radical in the bottom"


\bf \cfrac{4}{3-2i}\cdot \cfrac{3+2i}{3+2i}\impliedby \textit{multiplying by the conjugate of the bottom}
\\\\\\
\cfrac{4(3+2i)}{(3-2i)(3+2i)}\implies \cfrac{4(3+2i)}{3^2-(2i)^2}\implies \cfrac{4(3+2i)}{3^2-(4i^2)}\\\\
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recall\qquad i^2=-1\\\\
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\cfrac{4(3+2i)}{3^2-(4\cdot -1)}\implies \cfrac{4(3+2i)}{9+4}\implies \cfrac{12+8i}{13}\implies \cfrac{12}{13}+\cfrac{8}{13}i
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