Answer:
732 yd³
Step-by-step explanation:
This is a non-rectangular prism, so we have to <em>multiply the base times the height</em> (instead of multiplying length*width*height).
1. Base: trapezoid area equation: (b₁ + b₂)h/2 (b = bases of the trapezoid, h = height of the trapezoid)
Plug in: (11 + 4)6.1/2
Add: 15*6.1/2
Multiply + divide: <em>45.75 yd²</em>
2. Multiply with height: 45.75 * 16 = 732 yd³
Answer:
A. Concentration gradient must exist.
Step-by-step explanation:
Answer:
D.) 5 x 25 = 125
Step-by-step explanation:
The two numbers are 25 and 5. If you take 1/5 of 25, or simply divide by 5, you will get 5.
Let's say each row has x desks and there are y rows.
We then know that x*y =25
We also know that x*2-5=y (number number of rows is five less than twice the number of desks in each row)
So we substitute: x*(x*2-5)=25
putting numbers out of the brackets:
2x*x-5x=25
2x*x-5x-25=0
(2x+5)(x-5)=0 (this bracketing is true: you can check it by expanding it:
2x*x-10x+5x-25
So that means that either x=-2.5which can't be : there can't be a fractional number of benches,
or x=5
so each row has 5 desks and there are 2*5-5 rows, or 5 rows.
The number of combinations is the product of the number of choices for each selection...
c=11*10*49*48*47*46=559,352,640
