33 points
i really need on these both.

3) y^2 - 1 = 24

add 1 to each side:

y^2 = 25

Take square root of each side: y = √25

y = 5 or -5

4) y^2 - 1 =48

Add 1 to each side:

y^2 = 49

Take square root of each side:

y = 7 or -7

-5 and 5

-7 and 7

Step-by-step explanation:

y² - 1 = 24

y² = 25

y = ±5

y²  - 1 = 48

y² = 49

y = ±7

could you reply to this with the question so i can ?

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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