STD 10
1 answer:
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Given:
The sequence is 25, 20, 15, 10, 5.
To find:
The ninth term of the given sequence.
Solution:
We have,
25, 20, 15, 10, 5
It is an AP because the difference between two consecutive terms are same.
Here,
First term (a) = 25
Common difference (d) = 20-25
= -5
The nth terms of an AP is
Where, a is the first term and d is the common difference.
Putting a=25, n=9 and d=-5 to get the 9th term.
Therefore, the ninth term of the given sequence is -15.
Answer:
a.
b. $225
Step-by-step explanation:
Let Mr. Scruggs got money for his birthday be 'a'
He spent of it on dog treats = a ×
=
remainder amount would be = a -
=
Then he divided the remainder money equally among 3 favorite charities.
=
a. Each charity receive
b. If he donated $60 to each charity.
a = $225
Mr. Scruggs received $225 for his birthday.