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Elza [17]
3 years ago
7

Need answers to 30 and 31

Mathematics
1 answer:
Mice21 [21]3 years ago
5 0

Answer:

C ; A

Step-by-step explanation:

<u>Question 30:</u>

Perimeter is the sum of all sides.

Perimeter for a recatngle can be found with the formula:

2(L+W)

Length is 7

Width is 4

Plug our values in.

2(7+4)

2(11)

22

Answer C

<u>Question 31:</u>

Circumference of a circle can be found with the formula:

πd.

Diameter of the given circle is 6.

Plug it in

6π

Round π to 3.14

6(3.14)

18.84

Answer A

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Answer:

Option d is correct.

Step-by-step explanation:

Discrete values are those which take an integer value not in fraction.

Option A is discrete because there will be certain number of students in class say 20 or 30

We can not have 20.5 students

Therefore, option a is correct.

Option B is not discrete because many people can have age say 65 and a half years and weight can be in decimals say 50.5 kgs.

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4 0
3 years ago
(7 x 10^−12)(4 x 10^5) in scientific notation
Radda [10]
<span>(7 x 10^−12)(4 x 10^5)
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4 years ago
Please help me with this question
iris [78.8K]
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3 years ago
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Answer:

Step-by-step explanation:

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2 years ago
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Answer:

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Step-by-step explanation:

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4 years ago
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