Brian made 3 identical necklaces, each having beads and a pendant. The total cost of the beads and pendants for all 3 necklaces was $15.60. If the beads cost a total of $6.30, how much did each pendant cost?
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15.6-6.3=9.3

9.30 is the total for all 3 pendants

9.3/3=3.1

3.10 is the total for 1 pendant

(x+3)(x+7)

step-by-step explanation:

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

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