I'll give brainliest what are solutions to the equation y^2 - 1 = 80
-5 and 5
-4 and 4
-7 and 7
-9 and 9
which

The answer is -9 and 9

-9 to the second power is 81. 81 minus 1 is 80.

9 to the second power is 81. 81 minus 1 is 80.

Hope this helps!

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

pls mark as brainliest

well the answer to that is xoxoxo

step-by-step explanation: