Please help me out and explain it to me

A

Step-by-step explanation:

x^2-6x+25=0

A quadratic equation can be solved by using the quadratic formula,

So the equation to start with is ax^2+bx+c=0, thus your equation has the same layout.

a= 1

b= -6

c= 25

Then plug it in

When you have a negative in the root you have to take out an i

i = -

So when you take it out the negative isn't there anymore so you can simplify normally

Now split up the plus and minus

So the answer is A

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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