A blood bank needs 9 people to help with a blood drive. 12 people have volunteered. Find how many different groups of 9 can be f
1 answer:
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Answer:
x<8
Step-by-step explanation:
x+7<15
x<15-7
x<8
Answer:
The explicit formula for the given expression is .
Step-by-step explanation:
The given sequence is
-7, -4, -1, 2, 5
The difference between two consecutive terms is same, therefore the given sequence is an arithmetic sequence.
The first term of the given AP is -7 and the common difference is
The explicit formula for an AP is
Where, a is first term, d is common difference and n is number of terms.
Substitute a=-7 and d=3 in the above equation.
Therefore the explicit formula for the given expression is .