Answer:
Step-by-step explanation:
Let for simplicity. now our equation is
(2a+1)(3a-1)
now expand
2a*3a-2a+3a-1 = 6a^2+a-1
remember that
thus we get
Answer:
19.625 feet²
Step-by-step explanation:
Max diameter = 5 feet
Radius = 2.5 feet
Area = 3.14×2.5² = 19.625 feet²
The answer is 20, since if you set up the equation
x+80=3x
Move the x to the right by subtraction
80=4x
Divide by 4
x=20
You treat this problem as though it's a regular triangle.
You plug the numbers 24 and 45 into the equation for a triangle which is A=1/2 (L x W)
So what you get is A= 1/2 (24 x 45)
Which can be simplified to A= 12 x 45.
In the end that totals to 540 meters.
Number of books each of them have:
Jaime: x
Grant: x - 6
Ky: 3 (x - 6)
There are 176 books in total, so we can write it down as:
176 = x + x - 6 + 3 (x - 6)
176 = x + x - 6 + 3 * x + 3 * (-6)
176 = x + x - 6 + 3x - 18
176 = 2x - 6 + 3x - 18
176 = 5x - 24 / + 24 (both sides)
5x = 200 / ÷ 5 (both sides)
x = 40
Doublecheck:
Jamie: 40
Grant: 40 - 6 = 34
Ky: 3 (40 - 6) = 3 * 34 = 102
102 + 34 + 40 = 176, so it's correct :)