How to write an answer to 3 significant figures

Answers

Answer 1

Answer: It is the first three figures of an answer. However if the answer begins with 0 you don't include that as a significant figure. For example if you have an answer of 0.2034768 to three significant figures it will be 0.203. The first significant figure is always either 1,2,3,4,5,6,7,8,9 and the next two numbers after that.

Answer 2

Answer: The first three numbers in a overall number. If it's say 15460, you would round to 15500 because it rounds up and trailing 0's don't count unless decimal

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Simplify the given expression below: (4 + 2i) − (1 − 7i) 5 − 5i 5 + 9i 3 + 9i 3 − 5i

Answers

The best way to think of complex numbers is through x and y coordinates, if a number is just on its own (real) think of it as the x ordinate. Conversely if the number is say 2i (imaginary), just think of it as the y=2.
So 4+2i - (1-7i) = 4+2i-1+7i = (4-1) + i(2+7) = 3 +9i
That can be though of as (3,9). A complex number is just two separate real numbers, a real part and an imaginary part.

The value of the complex expression will be 3 + 9i. Then the correct option is C.

What is a complex number?

The complex number is the combination of the real part and the imaginary part.

Then the complex number is given as

⇒ a+bi

The complex expression is given below.

⇒ (4 + 2i) and (1 − 7i)

Then the difference between the complex number will be

⇒ (4 + 2i) - (1 - 7i)

Simplify the complex expression, then the complex expression will be

⇒ (4 + 2i) - (1 - 7i)

⇒ 4 + 2i - 1 + 7i

⇒ 3 + 9i

The value of the complex expression will be 3 + 9i.

Then the correct option is C.

More about the complex number link is given below.

brainly.com/question/10251853

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A package of 4 pairs of insulated socks costs $27.96. What is the unit price of the pairs of socks?The unit price is $ per pair of socks.

Answers

Answer:

1 pair of socks cost $6.99

Step-by-step explanation:

$27.96 divided by 4 = $6.99

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raquel bought p pencil. write an expression to show the total cost of the pencils if each pencil cost $0.75.

Answers

Expression is:

T = 0.75p

where T is total amount
p unit price

Lines AC and RS are
Coplanar
Parallel
Perpendicular
Skew

Answers

The correct option is Option D: Line AC and RS are skew lines.

What is the line?

A line is defined as set of points that extends infinitely in either direction. A line is the shortest distance between any two points.

What are skew lines?

Skew lines are two lines that never intersect and are not parallel also. Hence we can say that the two lines can not exist in the same plane.

From the figure it is clear that

Line AC and RS are in different planes and they are also not intersecting each other, hence according to the definition of skew lines, they are skew lines.

Learn more about skew lines

here: brainly.com/question/2099645

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Answer:

Skew Is your answer

Step-by-step explanation: Took the test

The original price p of an item less a discount of 40%

Answers

Answer:

find 40 percent of the original price and subtract it from the the original price to find the new price.

2. Yumi takes hour to complete 50 math problems. Eric is able to complete 48math problems in hour. Which student can complete math problems at a
greater rate of problems per hour?

Answers

Answer:

Yumi

Step-by-step explanation: because she is 2 ahead of Eric

Answer:yumi is faster by two questions Step-by-step explanation:

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