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AfilCa [17]
3 years ago
9

Is 12 and 15 relatively prime

Mathematics
1 answer:
Dovator [93]3 years ago
7 0
12 and 15 aren't relatively prime because they have 3 as a common factor. However, if it had only 1 as it's common factor then it would be relatively prime but 12 and 15 do have another common factor besides 1.
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A group of 72 children completed a survey on what kind of sport they like. The choices were: Chess, Swimming, and Football. Ever
hichkok12 [17]

Answer:

\dfrac{17}{72}

Step-by-step explanation:

From the given information:

Total number of students, n(U)=72

The choices were: Chess(C), Swimming(S), and Football(F).

Everyone liked at least one sport except 7 kids, n( C \cup F \cup S)'=7

Chess is not an active sport; and

10 children liked Chess only, n( C \cap F' \cap S')=10

The probability that a randomly-chosen child from this group does not like active kinds of sport is the Probability that a student plays chess only or like no kind of sport at all.

P( C \cup F \cup S)'+P(C \cap F' \cap S')=\dfrac{n( C \cup F \cup S)'+n(C \cap F' \cap S')}{n(U)} \\=\dfrac{10+7}{72} \\=\dfrac{17}{72}

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3 years ago
Iris wants to buy two necklaces one for your sister and one for self the necklace for her sister cost $42 and the necklace for h
Aloiza [94]
The total including sales tax is $75.60
4 0
3 years ago
Un industrial obtiene un préstamo de $ 15.000, al 23% anual por el lapso de 5 años. Calcular el monto a la finalización de este
olasank [31]

Answer:

$18,781.5

Step-by-step explanation:

According to the problem, calculation of the given data are as follows,

Loan amount (P) = $15,000

Rate of interest (r) = 23%

Time (t) = 5 years

Let this loan is compounding annually, then the amount after 5 years can be calculated as follows,

Final amount = P  (1 + ( r/t))^{t}

by putting the value in formula, we get

= $15,000 (  (1 + ( 0.23/5))^{5}

= $15,000 × 1.2521

= $18,781.5

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3 years ago
Whats the greatest common factor of 40,80 and 100?
Reptile [31]

Answer: 20

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I’m very confused. Please help!!!!!
Galina-37 [17]

Answer:

∠W≅∠R

∠Y≅∠Q

∠X≅∠P

Part 2

Line YW ≅ line QW

line WX ≅ to line MP

line XY ≅ to line PQ

≅ is saying congruent

Step-by-step explanation:

3 0
3 years ago
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