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Biblioteka

Unit 2 Study Guide

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Posljednje ažuriranje about 2 hours ago
31
Obavezno
1

Given the table:

Obavezno
1
Pitanje 1
1.

Find the common difference.

Obavezno
1
Pitanje 2
2.

Find the sum of the first 50 terms.

Given the arithmetic sequence with u_3=8 and u_8=-17.

Obavezno
1
Pitanje 3
3.

Find the common difference.

Obavezno
1
Pitanje 4
4.

Find u_1.

Obavezno
1
Pitanje 5
5.

Find u_{12}.

Obavezno
1
Pitanje 6
6.

Find the sum of the first 12 terms of the sequence.

Consider the sequence 2, 9, 16, 23, 30. . .

Obavezno
1
Pitanje 7
7.

Find u_{100}.

Obavezno
1
Pitanje 8
8.

Find n, given that the nth term of the sequence is 583.

Obavezno
1
Pitanje 9
9.

Find the least value of n, for which u_n is above 100.

Pitanje 10
10.

An arithmetic sequence has first term 8 and common difference 2. The sum of the terms of the sequence is 170. Find the number of terms in the sequence.

Consider the arithmetic sequence 1, 4, 7, 10, 13, ...

Obavezno
1
Pitanje 11
11.

The sum of the first n terms of the sequence is \frac{n}{2}(3n-1). Find the sum of the first 100 terms of this sequence.

Obavezno
0
Pitanje 12
12.

The sum of the first n terms is 477. Show that 3n^{2}-n-954=0.

Obavezno
1
Pitanje 13
13.

Using your graphing calculator or otherwise find the number of terms, n.

The first 4 terms of a geometric sequence are 512, x, 128, –64

Obavezno
1
Pitanje 14
14.

Write down the common ratio, r.

Obavezno
1
Pitanje 15
15.

Find the value of x.

Obavezno
1
Pitanje 16
16.

Calculate the value of the 13th term.

In a geometric sequence u_2=-6 and u_4=-24.

Obavezno
1
Pitanje 17
17.

Find the value(s) of r.

Obavezno
1
Pitanje 18
18.

Find u_1.

The first term of an arithmetic sequence is 0 and the common difference is 12. The first term of a geometric sequence is 6. The 6th term of the geometric sequence is equal to the 17th term of the arithmetic sequence mentioned.

Obavezno
0
Pitanje 19
19.

Write down an equation using this information.

Obavezno
1
Pitanje 20
20.

Calculate the common ratio, r, of the geometric sequence.

A geometric sequence has first term 500 and common ratio \frac{2}{3}.

Obavezno
1
Pitanje 21
21.

Find S_{10}.

Obavezno
1
Pitanje 22
22.

Find the infinite sum if it exists.

Given geometric sequence such that S_1=-200 and S_2=-100.

Obavezno
1
Pitanje 23
23.

State u_1.

Obavezno
1
Pitanje 24
24.

Find the value(s) of r.

Obavezno
1
Pitanje 25
25.

S_8

Obavezno
0
Pitanje 26
26.

Find the value of n when S_n=-125

Matryoshka dolls, or Russian dolls, are similarly designed dolls which open up and fit inside each other. The largest set of these types of dolls is a 51 piece set which was completed in 2003. The height of the largest piece in this set is 54 cm. The heights of successive smaller dolls are 94% of the preceding larger doll, as shown.

Obavezno
1
Pitanje 27
27.

Find the height of the smallest doll in this set.

Obavezno
1
Pitanje 28
28.

Find the total height if all 51 dolls were placed one on top of another.

The fifth term, u_5 of a geometric sequence is 375. The sixth term, u_6 of the sequence is 75.

Obavezno
1
Pitanje 29
29.

Write down the common ratio of the sequence.

Obavezno
1
Pitanje 30
30.

Find u_1.

Obavezno
1
Pitanje 31
31.

The sum of the first k terms in the sequence is 292,968.

Find the value of k.