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Fofino [41]
3 years ago
15

If 18% of the beads in a bag of green 25% are red, and 40% are purple, what is the probability of choosing a bead that is either

red or green?
​

Mathematics
2 answers:
Pani-rosa [81]3 years ago
6 0

Answer:

43%

Step-by-step explanation:

18+25+40 =83

That means 17% are other

There are 100 marbles

18 green , 25 red, 40 purple and 17 other

P(red or green) = Number that are red or green/ total

                           =25+18/ 100

                             =43/100

Murljashka [212]3 years ago
5 0

Answer:

D 43 percent

Step-by-step explanation: you add them up because you are looking for both of them or either one .

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Find the lateral area for the pyramid with the equilateral base.
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Answer:

Option A is the correct answer.

Explanation:

 The given pyramid has 3 lateral triangular side as shown below.

 Base of triangle = 12 unit

 We need to find perpendicular.

  By Pythagoras theorem we have

            Perpendicular² = 10²-6²

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So area of 1 lateral triangle = 1/2 x Base x Perpendicular.

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Area of lateral side = 3 x 48 = 144 unit²    

Option A is the correct answer.                

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