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Sophie [7]
3 years ago
7

Can someone explain this and give the answer please asap.

Mathematics
2 answers:
tekilochka [14]3 years ago
5 0

Hello lovely person! The answer you are tying to look for is 20! I hope this helps you and have a wonderful day!

Artyom0805 [142]3 years ago
3 0

Answer:

x=20

Step-by-step explanation:

we know the straight angle theorum...

3x+80+2x=180

5x=100

x=20

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If (x+yi)(1-3i)=10 <br> Then x+y=
Naily [24]

Answer:

x + y = 4

Step-by-step explanation:

Given that, (x + iy)(1 - 3i) = 10, then we have to calculate x + y.

Now, (x + iy)(1 - 3i) = 10

⇒ x(1 - 3i) + iy(1 - 3i) = 10

⇒ x - 3xi + iy - 3yi² = 10

⇒ (x + 3y) + i(y - 3x) = 10

Now, comparing the real and imaginary part of both sides we get,

(x + 3y) = 10 ............. (1) and

y - 3x = 0

⇒ y = 3x ............... (2)

Solving equations (1) and (2) we get

x + 3(3x) = 10

⇒ x = 1

So, y = 3x = 3

Therefore, x + y = 1 + 3 = 4 (Answer)

7 0
3 years ago
Which expression is equal to the expression (7•2)^7 a. 9^7 b. 7^7•2^7 c. 7^7 2^7 d. 7•(7•2)
Keith_Richards [23]
(7\cdot2)^7=7^7\cdot2^7\to\fbox{b.}
5 0
3 years ago
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last year a large trucking company delivered 9.0x10^5 tons of goods with an average value of $17,000 per ton. what was the total
lana66690 [7]
The answer is 1.53x10^10 dollars.

You get this answer by multiplying the total amount of goods in tons (900,000) by the average value of the goods ($17,000 per ton) to get your answer of 1.53x10^10 dollars.
3 0
3 years ago
Read 2 more answers
Pls someone help me with this​
Nadya [2.5K]
  1. The two triangles are similar because if you flipped the triangle on the left [or reflected, for the technical term] and enlarged it by 4, it would be the same shape.
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2 years ago
Is this how you would solve number 4?
goblinko [34]
No I'm 99% sure it's wrong
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