The width of a rectangle is 3 units less than the length. The area of the rectangle is 54 units. What is the length,in units of
the rectangle?
2 answers:
Answer:
The length is 9 units
Step-by-step explanation:
Let x = length
width = x-3
Area = 54 = l*w
54 = x * (x-3)
Distribute
54 = x^2 -3x
Subtract 54 from each side
54-54 = x^2 -3x-54
0 = x^2 -3x-54
Factor
What 2 number multiply to -54 and add to -3
-9 * 6 =54
-9+6 =-3
(x-9) (x+6) =0
Using the zero product property
x=9 x=-6
Since we cannot have negative length
x=9 units
The length is 9 units
Answer:
9 units
Step-by-step explanation:
length: L
Width: L - 3
Area = length × width
(L - 3) × L = 54
L² - 3L - 54 = 0
L² - 9L + 6L - 54 = 0
L(L - 9) + 6(L - 9) = 0
(L - 9)(L + 6) = 0
L = 9, -6
L = 9
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Hope this Helps!!
You look for two good points on the graph, then you rise and run.( go up then move right or left)
Answer:
Area =
b1 + b2
×h
2
=
2 + 6
× 5
2
=
20 centimeters2
Step-by-step explanation:
in it's lowest term...
Answer:
sandwiches n[S]=4
drinksn[D]=3
desserts[d]=2
total n[T]=9
number of possible choices for:
4 sandwiches=n[S]/n[T]=4/9
For
3 drinks=n[D]/n[T]=3/9=1/3
and
For 2 desserts=n[d]/n[T]=2/9
