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3 years ago

You do parenthesis first right? And then do division?

Mathematics

2 answers:

Serhud [2]3 years ago

7 0

First you do parentheses then divide

IrinaK [193]3 years ago

4 0

Yes. Parenthesis first, then if any exponents, then multiplication or division, then addition and subtraction. PEMDAS.

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Divide. a.1 − 2i/2i b. 5 − 2i/5 + 2i c.√3 − 2i/−2 − √3i

Umnica [9.8K]

Answer:

(a) \frac{-1i}{2}-1[/tex]

(b) $\frac{20i+21}{29}$

Step-by-step explanation:

We have to perform division

(a) $\frac{1-2i}{2i}$

So after division

$\frac{1-2i}{2i}=\frac{1}{2i}-\frac{2i}{2i}=\frac{-1i}{2}-1$

(b) We have given expression $\frac{5-2i}{5+2i}$

After rationalizing $\frac{5-2i}{5+2i}\times \frac{5-2i}{5-2i}=\frac{(5-2i)^2}{25+4}=\frac{25+4i^2+20i}{29}=\frac{20i+21}{29}$

After rationalizing

$\frac{\sqrt{3}-2i}{-2-\sqrt{3i}}\times \frac{-2+\sqrt{3i}}{-2+\sqrt{3i}}=\frac{-2\sqrt{3}+7i+2\sqrt{3}}{7}=\frac{7i}{7}=i$

5 0

4 years ago

Solve 10x=3 how do i take logarithms on both sides?

grandymaker [24]

10x=3
3/10=x
3/10=0.3
X=0.3

7 0

2 years ago

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Ratio and Proportion problem Please help meh

Anarel [89]

Answer:

hope its helpful to uh.......

4 0

3 years ago

Please help for brainiest !!!!

hjlf

Answer:

E) Line 5

Step-by-step explanation:

Line 5 contains the first incorrect mathematical process

Process

x−5(x+1)>3x+2

−4x−5>3x+2

−7x−5>2

−7x>7

x<−1

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2 years ago

2+2= ? please answer asap

musickatia [10]

Pretty sure it’s 4 idk tho this is a tough one. Hahahaha

6 0

3 years ago

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