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2 years ago

Simplify the expression. (-2-2i)(-4+6i)

Mathematics

2 answers:

hoa [83]2 years ago

7 0

Answer:

20 - 4i is the correct answer!

Step-by-step explanation:

Snowcat [4.5K]2 years ago

4 0

Answer:

4i*2i (8i)

Step-by-step explanation:

you combine whats in the parenthesis, then multiply the two

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Identify the variable(s) in the expression below. 5 + 12w

tatiyna

Answer:

w is the variable

Step-by-step explanation:

the letters you see next to the numbers the variable.

8 0

1 year ago

What is (99/100)^101 times (100/99)^100?

sineoko [7]

Answer:

99/100

Step-by-step explanation:

First of all recall that

$a^n\cdot b^n =(ab)^n$

Now we we will try to apply that formula for $a=99/100$ and $b=100/99$ .

First rewrite $(99/100)^{101}=(99/100)\times (99/100)^{100}$

Now

$(99/100)\times (99/100)^{100}\times (100/99)^{100}\\=(99/100)\times ((99/100)\times (100/99))^{100}\\=(99/100)\times 1^{100}\\=(99/100)\times 1\\=99/100$

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2 years ago

What is the product of any nonzero real number and it’s multiplicative inverse?

Elis [28]

Answer:

Step-by-step explanation:

The product of any nonzero real number and its multiplicative inverse (reciprocal) is always 1. This is called the multiplicative identity or the identity element of multiplication.

~Hope this helps!~

7 0

3 years ago

What is the value of x in the equation 3x -1/9 y = 18, when y = 27? 5 7 45 63

almond37 [142]

Answer:

$x=7$

Step-by-step explanation:

we have

$3x-\frac{1}{9}y=18$

Substitute the value of y=27 in the equation and find the value of x

$3x-\frac{1}{9}(27)=18$

$3x-3=18$

$3x=18+3$

$3x=21$

$x=7$

4 0

2 years ago

-2 2/3 divided by 4/3

Vedmedyk [2.9K]

Answer:

-2

Step-by-step explanation:

$Rule(s): a\frac{b}{c} = \frac{a \cdot c + b}{c}, \frac{-a}{b}=-\frac{a}{b}, \frac{\frac{a}{b}}{\frac{c}{d}}=\frac{a\cdot \:d}{b\cdot \:c} \\2\frac{2}{3}=\frac{2\cdot 3+2}{3}\\=\frac{8}{3}\\=\frac{-\frac{8}{3}}{\frac{4}{3}}\\=-\frac{\frac{8}{3}}{\frac{4}{3}}\\=\frac{-8\cdot \:3}{3\cdot \:4}\\= \frac{-24}{12}\\= -2$

8 0

1 year ago