Solve:
x +9
x2 – 5x + 6
<0

(-∞,-9) U (2,3)

Step-by-step explanation:

(x+9)(x²-5x+6) < 0

x²-5x +6

= x² -3x -2x +6

= x( x-3) -2(x-3)

= (x-3)(x-2)

Substituting

(x+9)(x-2)(x-3)

For x < -9

the term is negative

For x >-9 x<2

the term is positive

For x>2 x<3

the term is negative

For x>3

the term is positive

(x+9)(x-2)(x-3) < 0

(-∞,-9) U (2,3)

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it

what is the question? i am guessing you are looking for the area.

to find an area, you have to do length x width.

in this case, it would be 12 ft x 4 ft = 48 sq. ft