Is the y value of the vertex of 4x squared plus 8x minus 8. meee

y = -12

Step-by-step explanation:

You first calculate the x coordinate using the equation x = , which in this case is .

Then plug that x value into the equation to get the y coordinate:

4(-1)²+8(-1)-8 = -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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step-by-step explanation:

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