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dsp73
2 years ago
7

What is this series written in sigma notation? 2.5 + 2.5(1.2) + 2.5(1.2)2 + ⋯ + 2.5(1.2)87

Mathematics
2 answers:
son4ous [18]2 years ago
4 0

Answer: Answer D

Step-by-step explanation:

dlinn [17]2 years ago
3 0

Answer:

The answer is D

Step-by-step explanation:

Believe me, dawg!

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The following graph shows the time required to braid a necklace based on its length? Which statements about the graph are true?
sdas [7]

Answer:

The answer would be A and B

Step-by-step explanation:

I really did not have an explanation because I found out by guessing because I did not understand. :)

5 0
2 years ago
PLEASE HELP QUICK!!! A bowl has 85 pieces of candy. Nineteen children empty the bowl of candy. Some children take 3 pieces, some
Mekhanik [1.2K]

Answer: 3 kids take 3 pieces of candy each

Step-by-step explanation:

Let the number of children that took 3 pieces is x ( total take 3*x pieces of candy)

Number of children that took 5 pieces is y ( total take 5*y pieces of candy)

1 child took 1 piece that actually means that x+y=18 and 3*x+5*y=84.

( Because total number of all kids is 19. We just deduct one kid (Let his name is John) who took only 1 candy.  So we have 19-1 =18 kids without John. The similar is with the candies. Total number is 85. We deduct 1 piece which John has taken. )

So we have 2 equations or the system of 2 equations:

1).  x+y=18

2). 3*x +5*y=84

Multuply both sides of equation 1) by 3

We have   3*x+3*y=18*3

Deduct 3*y from both sides of this equation

3*x+3*y-3*y=54-3*y

3*x=54-3*y

Substitute 3*x in equation  2).  by 54-3*y

2) 54-3*y+5*y=84

2*y=30

y=15  ( kids take 5 pieces of candy each)

Using equation 1) find x

x+15=18

x=3 (kids take 3 pieces of candy each)

5 0
3 years ago
A hawk can travel at a speed of 120 miles per hour. How long would it take to travel 840 miles without stopping?​
Scilla [17]

Answer:

7 hours

Step-by-step explanation:

120 x 7 = 840

8 0
2 years ago
Read 2 more answers
Use the binomial theorem to show that 7^n + 2 is divisible by 3, where n is a positive integer.
masha68 [24]

By the binomial theorem,

7^n=(6+1)^n=6^n+n6^{n-1}+\dbinom n26^{n-2}+\cdots+\dbinom n{n-2}6^2+n6^1+1

Each term containing a factor 6 is divisible by 3, since 3 divides 6. The remaining 1 and 2 sum to 3, which is also divisible by 3.

7 0
2 years ago
In 2012, the world's largest pumpkin weighed 913 kilograms. An average-sized pumpkin weighs 5,000 grams.
Paladinen [302]
5000 grams is 5 kilograms 913-5= 908
3 0
3 years ago
Read 2 more answers
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