Answer:
(a) an = 18 +3(n -1)
(b) row 35
Step-by-step explanation:
(a) The general term (an) of an arithmetic sequence can be expressed in terms of the first term (a1) and the common difference (d) as ...
an = a1 +d(n -1)
The given sequence has a1 = 18 and d = 3, so the explicit formula is ...
an = 18 + 3(n -1)
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(b) We want to find n such that an = 120.
120 = 18 + 3(n -1)
40 = 6 + n - 1 . . . . . . . divide by 3
35 = n . . . . . . . . . . . . . subtract 5
Row 35 has 120 seats.
Ratio is: 8:7
Because there are 8 girls against 7 boys
Answer:
C
Step-by-step explanation:
Answer:
$560.29
Step-by-step explanation:
To find the total price, first, find out how much of $519.99 is 7.75%
To do this convert %7.75 into a decimal [divide by 100]
7.75% = 0.0775
Now multiply 0.0775 by $519.99
519.99 x 0.0775 = 40.299225
Since 40.299225 is an amount of money, round it to the nearest hundreth in cents.
40.299225 = 40.30
Now add the sales tax and original price.
$40.30 + $519.99 = 560.29
So, the cost of the bicycle after sales tax is $560.29
Answer:
4 and 10 - acute
2 is acute, but 3 is obtuse
8 and 12 - acute
6 and 12 - acute
1 is obtuse 2 is acute
15 and 11 are obtuse
9 is obtuse but 8 is acute
2 and 4 are acute.
Step-by-step explanation:
I believe this is correct.
A right angle is a perfect corner. Think of a square and look at the corner, it doesn't go farther or shorter when it hits a side if you know what I mean by that. An acute angle is shorter than a right angle, or stops before it can be called a right angle. An obtuse angle is bigger than a right angle, or ends after the right angle point. I hope what I have just said here helps you with future problems!! Good luck :))
