Step-by-step explanation:
step 1. 3(sqr(27) - 16) sqr is the square root
step 2. 3(3sqr3 -16)
step 3. 9sqr3 - 48.
factor out an 3x^2
3x^2(x^2 -2x+4)
The inside is not factorable
5 hours of service (for one child each)
15x + 25 = 20x
Subtract 15x from both sides:
25 = 5x
Divide both sides by 5 to isolate x:
x = 5
Hmm, there are 5 letters
if you cannot repeat the letters
hmm, let's find how many for 4 letters
there are 4! or 4*3*2*1=24
that's how many ways there are to arrange a,b,c, d
now we can multiply it by 4 because there are 4 choices for the last place (e is not included0
24*4=56
answer is 56 different arrangements
