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artcher [175]
2 years ago
12

Can someone help me with these questions?

Mathematics
1 answer:
Elina [12.6K]2 years ago
4 0
1) 1, -2..for the first question
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Divide.<br> a.1 − 2i/2i<br> b. 5 − 2i/5 + 2i<br> c.√3 − 2i/−2 − √3i
Umnica [9.8K]

Answer:

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

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

(c) i

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}

(c) We have given expression \frac{\sqrt{3}-2i}{-2-\sqrt{3i}}

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
3 years ago
Pls help and thank you lolz
guapka [62]

Answer:

55

Step-by-step explanation:

there are two ways to answer : since angle 1 and the 125 degree angle are a linear pair, you can do 180-125 = 55, or, since the three angles in the triangle always add up to 180, you can do 180-37-88 = 55.

3 0
2 years ago
Read 2 more answers
Hobie's Candies are sold in triangular-pyramid
Eva8 [605]
4 because triangle based pyramids have four faces
5 0
2 years ago
Ppl! Plz! I need help and no one will, I’m sooo stuck I have been for 45 minutes! Plz help with questions and let me know if rig
balandron [24]

#1. For each 4 hours it goes down 8

#2. Each 3 month she gains an extra $150

#3. Each 4 hours it goes down by 16 F

#4. Each 18 months she grows 9 in.

#5. Right 1 up 2 (1,2)

#6. (1,2)

Hope this help buddy. Now accept my friend request!


6 0
3 years ago
Write an equation in slope-intercept form for the line that satisfies the following condition. slope 6, and passes through (5, 2
evablogger [386]
I can't remember if this is correct or not but I believe it would be 5 multiplied by 20 plus 6. As I said I don't Know for sure if this is correct or not. However, I hope it help
4 0
2 years ago
Read 2 more answers
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