<span>15 - 1/6n = 1/6n - 1
rewrite
1/6n - 1 = 15 - 1/6n
add 1/6 n to both sides
1/6n - 1 + 1/6n = 15 </span>- 1/6n + 1/6n
Simplify
2/6n - 1 = 15
1/3n - 1 = 15
add 1 to both sides
1/3n - 1 + 1 = 15 +1
1/3n = 16
Multiply 3 to both sides
1/3n * 3 = 16 *3
3/3n = 48
n = 48
treat the tree trunk as a cylinder
v= pi x r^2 x h
using 3.14 for pi
3.14 x 3^2 x 10 = 282.6 cubic feet
282.6 * 45 = 12, 717 pounds
<h3><u>Solution</u><u>:</u><u>-</u></h3>
(3/4)to the power of 3 in form of p/q
Answer:
x² + 18x +81
x² - 14x +49
4x²- 4x - 1
Step-by-step explanation:
multiply the x in the first parentheses by x and 9 in the other parentheses and
multiply the 9 in the first parentheses by x and 9 in the other parentheses and add all together
(x+9)(x+9)
x² + 9x + 9x + 81
x² + 18x +81
multiply the x in the first parentheses by x and -7 in the other parentheses and multiply the -7 in the first parentheses by x and -7 in the other parentheses and add all together
(x-7)(x-7)
x² -7x - 7x +49
x² - 14x +49
(2x-1)² is the same as (2x-1)(2x-1)
multiply the 2x in the first parentheses by 2x and -1 in the other parentheses and multiply the -1 in the first parentheses by 2x and -1 in the other parentheses and add all together
(2x-1)(2x-1)
4x²-2x-2x+1
4x²- 4x - 1