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lara [203]
3 years ago
15

LRational or Irrational? 6.12.

Mathematics
1 answer:
katen-ka-za [31]3 years ago
3 0
6.12 is Irrational
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Round 3.721 to the nearest hundredths place
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3.700

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Find the number of permutations of the first 9 letters of the alphabet, taking 4 letters at a time.
Vinil7 [7]

Solution-

First 9 letters of alphabet are- A,B,C,D,E,F,G,H,I

Total number of ways of selection of 4 letters from 9 alphabets = 9C4

=9!÷((4!).(9-4)!) = 9!÷(4!×5!) = (9×8×7×6)÷(24) = 126

The number of ways of arranging these 4 numbers = 4! = 24

∴ Total number of possible permutations = 9C4×4! = 126×24 = 3024

∴ option number 2 is correct.

8 0
3 years ago
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Solve the problem. Make sure your answer is in simplest form. 3/16 x 4/21 = ?
Irina18 [472]

Answer:

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Step-by-step explanation:

The result is given by means of some algebraic handling:

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\frac{3}{84} - Dividing each term by 2.

\frac{1}{28} - Dividing each term by 3.

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3 years ago
What is the area of a figure with vertices (1, 1), (8, 1), and (5, 5)?
Bess [88]
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A manufacturer of mosquito repellent claims that the average amount of time their repellent is effective is at least 3.5 hours.
natta225 [31]

Answer:

Hypothesis Testing:

Manufacturer claims that the average of time their mosquito repelllent is effective is at least 3.5hrs l.e μ ≥ 3.5hrs

Step-by-step explanation:

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