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egoroff_w [7]
3 years ago
13

A geometric sequence has these terms: a

Mathematics
1 answer:
Semmy [17]3 years ago
4 0

Good evening ,

Answer:

An = 8×(5/2)ⁿ⁻¹

Step-by-step explanation:

An = A1 × qⁿ⁻¹

A1=8 and q = 20/8 = 5/2

then An = 8×(5/2)ⁿ⁻¹.

:)

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jeanine Baker makes floral arrangements. She has 13 different cut flowers and plans to use 7 of them. How many different selecti
Ksju [112]

A total of 1,716 selections of the 7 flowers are possible.

Step-by-step explanation:

Step 1:

There are 13 flowers from which Jeanine Baker plans to use 7 of them.

To determine the number of selections that are possible we use combinations.

The formula for combinations is; ^{n} C_{r}=\frac{n !}{(n-r) ! r !}.

Step 2:

In the given formula, n is the total number of options and r is the number of options to be selected.

For this question, n = 13 and r=7.

So ^{13} C_{7}=\frac{13 !}{(13-7) ! 7 !} = \frac{13 !}{(6) ! 7 !} = 1,716.

So a total of 1,716 selections are possible.

3 0
3 years ago
Arlene Frank is saving money for her college
lora16 [44]
Can you please include a question please? Thank you
3 0
3 years ago
Read 2 more answers
A recipe requires 3 cups of flour to make 27 dinner rolls. How much flour is needed to make 9 rolls.
amid [387]
9 rolls* (3 cups of flour/ 27 dinner rolls)= 1 cup of flour.

1 cup of flour is needed to make 9 rolls~
5 0
3 years ago
The sum of 6 times a position number and 1 is the same as the sauare of 1 less than the number
stepan [7]
If the number is x, then:
6x+1= (x-1)^2

Now we just need to simplify it
6x+1=(x-1)*(x-1)
6x+1=x^2-2x+1
8x=x^2
8=x

The number is 8.

To check the answer
6*8+1=7^2
49=49
correct :)
5 0
3 years ago
A baseball tournament begins with 128 teams. After each round of games , only half of the teams are left. How many teams will be
Zanzabum

Answer:

128/2=64/2=32

Step-by-step explanation:

you really need a help with that ? you don't know how to divide by 2 ? and then to divide the result another time by 2 ?

not to mention that you could achieve that with in division by 4 (as this is the save as dividing by 2 and then again by 2).

putting such questions in here is a farce and a waste of time for the helping people.

3 0
3 years ago
Read 2 more answers
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