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Iteru [2.4K]
3 years ago
10

In making the key chain, Sara uses a pattern of beads 3 times. After the key chain is complete, what fraction of the beads in th

e key chain are either white or blue?
picture:(red)(blue)(white)(blue)(red)(white)(red)(blue)(red)(white)(red)(blue)(white)(blue)(red)
Mathematics
1 answer:
xz_007 [3.2K]3 years ago
5 0

Answer:

9/15 or 3/5

Step-by-step explanation:

there are 15 beads pictured and 9 out of the 15 is either white or blue, thus 9/15

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What is the sum of the arithmetic series
docker41 [41]

Answer:

S_ {12} = 192

Step-by-step explanation:

The nth term of the given arithmetic sequence is

U_n = 3 + 2n

The first term of this series is:

U_1 = 3 + 2(1) = 5

The last term of this series is when

n = 12

U_ {12}= 3 + 2(12)

U_ {12}= 3 + 24 = 27

The sum of the first n terms of an arithmetic series when the first an last term is known is given by:

S_n =  \frac{n}{2}(a + l)

Where a=5 is the first term and l=27 is the last term.

S_ {12} =  \frac{12}{2}(5 + 27)

S_ {12} =6(32) =19 2

6 0
3 years ago
The figure is a circle with center O.
STatiana [176]

<u>Given</u>:

Given that the circle with center O.

The radius of the circle is OB.

The chord of the circle O is PQ and the length of PQ is 12 cm.

We need to determine the length of the segment PA.

<u>Length of the segment PA:</u>

We know that, "if a radius is perpendicular to the chord, then it bisects the chord and its arc".

Thus, we have;

PA=\frac{PQ}{2}

Substituting the value PQ = 12, we get;

PA=\frac{12}{2}

PA=6 \ cm

Thus, the length of the segment PA is 6 cm.

Hence, Option d is the correct answer.

3 0
3 years ago
What is g in 7h+2f-2g=17.15
drek231 [11]
G = (7h + 2f + 3c - 17.15)/2
7 0
3 years ago
Please help this is so confusing u can have 25 points if u help me
Elina [12.6K]

Step-by-step explanation:

Share 20pounds in the ratio 2:3

Total ratio=2+3=5

2/5×20=8

20-8=12

Sharing 20pounds in that ratio gives 8pounds:12pounds

Share 15cm in the ratio 1:3

Total ratio=1+4=4

¼×15=3.75

15-3.75=11.25

Sharing 15cm in that ratio gives 3.75:11.25

7 0
3 years ago
Which on is the answer? Pls help
zheka24 [161]
Both is the answer to the problem
4 0
3 years ago
Read 2 more answers
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