Factor this trinomial completely.

–12x2 + 45x + 12

a. –12x2 + 45x + 12
–3(4x2 + 15x – 4)
–3(4x – 1)(x + 4)
b. –12x2 + 45x + 12
–3(4x2 + 17x + 4)
–3(4x + 1)(x + 4)
c. –12x2 + 45x + 12
–3(4x2 – 15x – 4)
–3(2x + 1)(2x – 4)
d. –12x2 + 45x + 12
–3(4x2 – 15x – 4)
–3(4x + 1)(x – 4)

12x - 52

4x2 - 27x + 44

is correct.

16

x - 3

-  

4

x - 4

5 -  

x - 4

x - 3

·

(x - 3)(x - 4)

(x - 3)(x - 4)

=

16(x - 4) - 4(x - 3)

5(x - 3)(x - 4) - (x - 4)(x - 4)

=

16x - 64 - 4x + 12

5(x2 - 7x + 12) - (x2 - 8x + 16)

=

12x - 52

5x2 - 35x + 60 - x2 + 8x - 16

=

12x - 52

4x2 - 27x + 44

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

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)