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-BARSIC- [3]
3 years ago
11

Answer sometimes, always, or never

Mathematics
1 answer:
vovikov84 [41]3 years ago
4 0
1) Sometimes
2) Sometimes
3) Always
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Multiply (2 -10i) (-5 + 3i) Show each step for credit!
jonny [76]

Answer:

The answer is

<h2>20 + 56i</h2>

Step-by-step explanation:

(2 -10i) (-5 + 3i)

Using FOIL multiply each term in the first bracket by the terms in the second <u>bracket</u>

That's

2(-5) + 2(3i) - 10i(-5) - 10i(3i)

<u>Multiply the numbers and simplify</u>

We have

- 10 + 6i + 50i - 30i²

From the rules of imaginary numbers

<h3>i² = - 1</h3>

So we have

- 10 + 56i - 30(- 1)

- 10 + 56i + 30

Simplify

30 - 10 + 56i

We have the final answer as

<h3>20 + 56i</h3>

Hope this helps you

5 0
2 years ago
Can someone helps me with these 2 questions?
Firdavs [7]

3/5 = 75/x

75/3 = 25

5 x 25 = 125

3/5 = 75/125

Book has 125 pages

6 3/4 ÷ 4 1/2 = 1 1/2

1 1/2 times as long

6 0
3 years ago
Read 2 more answers
Maria needs to read a 1,500 page book in 10 days how many page does she has to read everyday
BabaBlast [244]
You simply do 1500 ÷ 10 to work out how many pages she needs to read in one day. The answer is 150 pages everyday.
3 0
3 years ago
What is 5/47 as a decimal rounded to 3 decimal places?
MAXImum [283]

Answer:

You divide 5 by 47 and then see if the fourth digit after the decimal is 5 or greater or less than 5. If it's less, the digit before it remains the same and the decimal cuts off at it. If it's 5 or greater, the digit before it goes up one and the. decimal cuts off at it. Using this, you should get 0.106, I think.

5 0
3 years ago
The measure of arc XZ is 28° what is the measure of XYZ
ratelena [41]
Arc XZ is marked in red (see the image attachment)
Angle XYZ is marked in blue

It turns out that angle XYZ is exactly half the measure of arc XZ. This is due to the inscribed angle theorem. Angle XYZ is an inscribed angle that cuts off, or subtends, arc XZ.

measure of arc XZ = 28 degrees
measure of angle XYZ = (1/2)*(measure of arc XZ)
measure of angle XYZ = (1/2)*(28 degrees)
measure of angle XYZ = 14 degrees

Answer: D) 14 degrees

4 0
3 years ago
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