Answer:
n = , n =
Step-by-step explanation:
6n² - 5n - 7 = - 8 ( add 8 to both sides )
6n² - 5n + 1 = 0 ← in standard form
Consider the product of the factors of the coefficient of the n² term and the constant term which sum to give the coefficient of the n- term
product = 6 × 1 = 6 and sum = - 5
The factors are - 3 and - 2
Use these factors to split the n- term
6n² - 3n - 2n + 1 = 0 ( factor the first/second and third/fourth terms )
3n(2n - 1) - 1(2n - 1) = 0 ← factor out (2n - 1) from each term
(2n - 1)(3n - 1) = 0 ← in factored form
Equate each factor to zero and solve for n
3n - 1 = 0 ⇒ 3n = 1 ⇒ n =
2n - 1 = 0 ⇒ 2n = 1 ⇒ n =
430 x 3 = w
w / 3 = 430
430 / w = 3
I would personally go with the first one
Answer:
B
Step-by-step explanation:
the question has been answered
The answer is C. This is because the area of a cylinder can be represented with the formula:
Then, you substitute 6 for h, the height, and 3.5 for r, the radius and solve, giving you the answer, 208.92 sq. cm. Then, you have to subtract the two circular sides. You find the area of one circle and multiply by 2. One circle is 38.48 sq. cm and doubled is 76.96 sq. cm. Then you subtract 208.92-76.96 giving you about 132 sq. cm.