She uses 11/36 yards of string for each.
In this problem, you're dividing the amount of string by the number of banners, so 11/12 ÷ 3. To do this though, it's easiest to convert the 3 into a fraction. After you do this, you're left with:
11/12 ÷ 3/1
When dividing fractions, you flip the second fraction upside down and change the operation to its opposite, which gives you:
11/12 × 1/3
Then you just multiply across. 11×1=11 and 12×3=36, so you're left with 11/36 yards of string.
Answer:
C
<em>Hope that helps!</em>
Step-by-step explanation:
it is a rational number because it can be written as a fraction
Answer:
Step-by-step explanation:
Let length = x
Width = x + 5
Area = 36
Area = length × width
36 = x(x + 5)
36 = x^2 + 5x
x^2 + 5x - 36 = 0
x^2 + 9x - 4x -36 =0
(x^2 + 9x) - (4x + 36) = 0
x(x + 9) - 4(x + 9) = 0
(x -4)(x+9) = 0
x - 4 = 0 or x + 9 = 0
x = 4 or -9
But x can only be positive because it is a length
x = 4unit = length
Width = x + 5 = 4 +5 = 9unit
It is 3y2-10y-8
hope this helps :)
