Answer:
k = 9
Step-by-step explanation:
Consider the pattern on the right side , that is
= k(k + 2) + 1 = k² + 2k + 1
Equating
k² + 2k + 1 = 100 ( subtract 100 from both sides )
k² + 2k - 99 = 0 ← in standard form
(k + 11)(k - 9) = 0 ← in factored form
Equate each factor to zero and solve for k
k + 11 = 0 ⇒ k = - 11
k - 9 = 0 ⇒ k = 9
But k > 0 , then k = 9
So, to start off, find the total amount of words that there must be.
15 pages * 350 words per page = 5250 words total.
5250 words total / 70 words per minute = 75 minutes or about 1 hour and 15 minutes.
Answer:
c
Step-by-step explanation:
It’s a
Distribute the exponent to each term, then move your negative exponents to the opposite side then simplify.
