9. simplify (3a4 – 2a2 + 5a – 10) – (2a4 + 4a2 + 5a – 2).
a. a4 – 6a2 – 8
b. a4 + 2a2 + 10a – 12
c. a4 + 4a2 + 10a – 12
d. 5a4 + 4a3 + 3a2 + 10a – 12

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

happy to

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answer: the four apples you took away.

step-by-step explanation: