Let x be the score Amaya gets on the final test. She wants her average of all 3 tests to be between 80 and 89:
<span>80 ≤ (78 + 91 + x) / 3 ≤ 89 </span>
<span>Multiply everything by 3: </span>
<span>240 ≤ 78 + 91 + x ≤ 267 </span>
<span>240 ≤ 169 + x ≤ 267 </span>
<span>Subtract 169 from everything: </span>
<span>240 - 169 ≤ x ≤ 267 - 169 </span>
<span>71 ≤ x ≤ 98 </span>
<span>Answer: </span>
<span>She needs to score between 71 and 98 to get a B for the course.</span>
Sum = a1 + a2 + a3 + ... + an = Σan
Sum to infinity of a geometric sequence is given by S∞ = a/(1 - r); where a is the first term and r is the common ratio.
S∞ = 740/(1 - 1/6) = 740/(5/6) = 888
Answer:
the log of 10,000,000,000 is 10
Answer:
It’s A
Step-by-step explanation:
Answer:
Option D (There is no solution) is the correct answer.
Step-by-step explanation:
According to the question, the matrix is:
⇒
The linear equation will be:
⇒
and
⇒
i.e,
(Not possible)
Thus the above given matrix has no solution. So the above is the correct option.