Answer:
2/9
Step-by-step explanation:
After Caroline's share,
1 - 1/9 = 8/9 is left
Sarah gets:
1/(1+3) of 8/9
1/4 × 8/9
2/9
Answer:
- width: 18 in
- length: 27 in
Step-by-step explanation:
The relations between length (L) and width (W) are ...
W +9 = L
LW = 486
Substituting gives ...
(W+9)W = 486
W^2 +9W -486 = 0 . . . put in standard form
(W +27)(W -18) = 0 . . . . factor
W = 18 . . . . the positive solution
The width of the rectangle is 18 inches; the length is 27 inches.
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<em>Comment on factoring</em>
There are a number of ways to solve quadratics. Apart from using a graphing calculator, one of the easiest is factoring. Here, we're looking for factors of -486 that have a sum of 9.
486 = 2 × 3^5, so we might guess that the factors of interest are -2·3² = -18 and 3·3² = 27. These turn out to be correct: -18 +27 = 9; (-18)(27) = -486.
Answer:

Step-by-step explanation:
Answer:
perimeter of rectangle = 2(l+b)
= 2 (9+5)
= 2 X 14
= 28 cm
is the perimeter of rectangle
The formula is: A=1/2 h (base one + base two)
<span>Plug in your numbers and you will get the area.</span>