Which shows equivalent expressions?
a2+3b-2a2=3a2+3b-4a2
a2+3b-2a2=3a2+4b-4a2
-a2+3b-2a2=3a2+3b
-a3+3b+2a2=3a2+4b-2a2

Step-by-step explanation:

a2 + 3b - 2a2 = 3a2 +3b -4a2

i dont know it

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

happy to

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