3 years ago

A number is chosen at random from 1-50. find the probability of selecting composite numbers

Mathematics

2 answers:

Ganezh [65]3 years ago

8 0

.68 or a 68% chance

irga5000 [103]3 years ago

8 0

34/50 because of how much there are so it would be possibly .68 or 68%

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Okay I know I suck at math and I really don't understand math that well so can you help me on this??? Thank you!

Alja [10]

W - width
l - length
p - perimeter

The perimeter is 72 cm (p=72).
The length is twice the width (l=2w).
The formula for perimeter is 2w+2l=P.

$p=72 \\
l=2w \\ \\
2w+2l=p \\
2w+2 \cdot 2w=72 \\
2w+4w=72 \\
6w=72 \\
w=12 \\ \\
l=2w=2 \cdot 12 =24$

Check the answer:
$2 \cdot 12 + 2 \cdot 24 \stackrel{?}{=} 72 \\
24+48 \stackrel{?}{=} 72 \\
72 \stackrel{?}{=} 72 \\ \hbox{true}$

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The answer is 3. I don't know if you want ne to explain or show my work just reply to me.

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3 years ago

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Answer:

Step-by-step explanation: