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Yuliya22 [10]
2 years ago
9

What is the sixth term in the geometric sequence described by this explicit formula? an=-5*(4)^(n-1)

Mathematics
2 answers:
Dmitrij [34]2 years ago
6 0

Answer:

-5120

Step-by-step explanation:

Replace the n in the formula by 6.

a6 = -5(4)^(6-1)

= -5 * 4^5

= -5120

harkovskaia [24]2 years ago
6 0

Answer:

a_{6} = - 5120

Step-by-step explanation:

To obtain the sixth term substitute n = 6 into the formula

a_{6} = - 5 × 4^{5} = - 5 × 1024 = - 5120


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Mark buys a wooden board that is feet long. The cost of the board is $1.50 per 5 1/4 foot, including tax. What is the total cost
Lelechka [254]
It would just be the tot foot time the cost

7.5 X 0.50 = $3.75
8 0
2 years ago
How many different 10 person committees can be selected from a pool of 23 people?
Salsk061 [2.6K]

We're going to be using combination since this question is asking how many different combinations of 10 people can be selected from a set of 23.

We would only use permutation if the order of the people in the committee mattered, which it seems it doesn't.

Formula for combination:

C(n,r)=\dfrac{n!}{(n-r)!r!}

Where n represents the number of objects/people in the set and r represents the number of objects/people being chosen from the set

There are 23 people in the set and 10 people being chosen from the set

C(23,10)=\dfrac{23!}{(23-10)!10!}

=\dfrac{23!}{13!\times10!}

Usually I would prefer solving such fractions by hand instead of a calculator, but factorials can result in large numbers and there is too much multiplication. Using a calculator, we get

=1,144,066

Thus, there are 1,144,066 different 10 person committees that can be selected from a pool of 23 people. Let me know if you need any clarifications, thanks!

~ Padoru

4 0
3 years ago
Read 2 more answers
How can i get answer 5 for -10 - (+5) ?​
timama [110]

Answer:

- 10 - (-20 + 5)

Step-by-step explanation:

- 10 - (-20 + 5)

- 10 - (-15) = -10 + 15

-10 + 15 = 5

have a nice day and mark me brainliest! :)

4 0
3 years ago
What is -12x-5(-8)=40​
ololo11 [35]

Answer: 0

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Please help mee l don’t understand new topic please
jasenka [17]

Answer to first four-

first one- 2f+2f=60

4f=60

f=15

second one-18+2d=38

2d=20

d=10

(short side is 9)

third one-2a+a+5+a+5=26

4a+10=26

a=4

long side is 9

short side is 8

fourth one-3xy+3xy+xy=63

7xy=63

xy=9

long side is 27

4 0
2 years ago
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