Answer:
Width = 15 inches Length = 20 inches
Step-by-step explanation:
The area of a rectangle is calculated using the following formula.
(1)
Where L is the length and x is the width of the rectangle
In this case we know that the length of the rectangle is 5 inches greater than its width. This means that:
(2)
Also The area of a rectangle can be represented by the equation 
so to find the width x we solve the equation
(3)
For an equation of the form 
the quadratic formula is:
In this case note that:
Then:
→ 
→ 
We take the positive solution 
Now we use equation (2) to find L
Answer:
The answer is 3.12
Step-by-step explanation:
2 consecutive odd integers.....x and x + 2.....the product means multiply....the sum means add.
x(x + 2) = 4(x + x + 2) - 1
x^2 + 2x = 4(2x + 2) - 1
x^2 + 2x = 8x + 8 - 1
x^2 + 2x = 8x + 7
x^2 + 2x - 8x - 7 = 0
x^2 - 6x - 7 = 0
(x - 7)(x + 1) = 0
x - 7 = 0 x + 2 = 7 + 2 = 9
x = 7
x + 1 = 0 x + 2 = -1 + 2 = 1
x = -1
there can be 2 answers for this....
(1) 7 and 9
(2) -1 and 1
24 and 42, I got this by multiplying 5 and 2 then doing the same thing to 7 and adding the sums. I used this method to find the perimeter of 10 and 12 as well.
Answer:
36 people would order chicken.
Step-by-step explanation:
Case I: (50 People in Total)
Total Number of People Ordering=8+10+18+14=50
Percentage of People ordering chicken=people ordering chicken/total number of people=18/50=0.36%
Case II: (100 People in Total)
Number of People ordering chicken=percentage of people ordering chicken x total number of people=0.36 x 100=36
