Answer:
n = -1
Step-by-step explanation:
you've accidently substracted 6n from 12n when you were supposed to be adding them. (-6n becomes +6n when brought to the otherside of the equal sign)
Answer:
Step-by-step explanation:
11.91/3 =3.97
the answer is $3.97
perimeter = 2width + 2 length
102 = 2(x+9) + 2x
102 = 2x + 18 +2x
102 = 4x +18
84 = 4x
21 = x
Length = x = 21 inches
Width = x + 9 = 21 + 9 = 30 inches
Answer:
It takes four hours because the little bro is alone and only one lawn mower is used
H(4) means that x = 4.
Replace x with 4.
h(4) = 3(4) - 7
h(4) = 12 - 7
h(4) = 5
Hope this helps!