Solve for .
Write the smaller solution first, and the larger solution second.
(x-7)(-4x - 2) = 0
smaller x =
larger x =

smaller x =-1/2

larger x = 7

Step-by-step explanation:

(x-7)(-4x - 2) = 0

Using the zero product property

(x-7)=0              (-4x - 2) = 0

x-7+7 = 0+7        -4x-2-2 =0+2

x=7                         -4x =2

                               -4x/-4 = 2/-4

                                    x = -1/2

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

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step-by-step explanation: