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kherson [118]
3 years ago
9

Can i have some help with this?

Mathematics
1 answer:
irina [24]3 years ago
6 0

Answer:

10.75 cm^2

Step-by-step explanation:

1. Area of semicircle, A= (pi x R^2) divided by 2

2. A= (3.14 x 5^2) divided by 2 = 39.25

3. Area of rectangle, A= l x w

4 A= 10 x 5 = 50

5. subtract

6. 50 - 39.25

7. 10.75

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Which expression has the fewest significant figures?
yanalaym [24]

Hello!

Here are some rules to determine the number of significant figures.

  1. Numbers that are not zero are significant (45 - all are sigfigs)
  2. Zeros between non-zero digits are significant (3006 → all are sigfigs)
  3. Trailing zeros are not significant (0.067 → the first two zeros are not sigfigs)
  4. Trailing zeros after a decimal point are always significant (1.000 → all are sigfigs)
  5. Trailing zeros in a whole number are not significant (7800 → the last two zeros are not sigfigs)
  6. In scientific notation, the exponential digits are not significant, known as place holders (6.02 x 10² → 10² is not a sigfig)

Now, let's find the number of significant figures in each given number.

A). 296.54

Since these digits are all <em>non-zero</em>, there are 5 significant figures.

B). 5003.1

Since the two <em>zeros are between non-zero digits</em>, they are significant figures. Thus, there are 5 significant figures.

C). 360.01

Again, the two zeros are between non-zero digits. There are 5 significant figures.

D). 18.3

All of these digits are non-zero, hence, there are 3 significant figures.

Therefore, expression D has the fewest number of significant figures being 3.  

4 0
3 years ago
Read 2 more answers
Please help me with questions 3 and 4!!! It's really past due and I haven't been the best so far. Send help!!! (This is middle s
e-lub [12.9K]

Answer:

3.) 4

4.) 4j=44

    4j/4=44/4

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Pls mark Brainliest :)

Step-by-step explanation:

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I believe its the first one

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Graph -5x-4=10 help me
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This is the graph:

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