What is the cube root of 30

Answers

Answer 1
Answer: Cube root of 30:


Equivalent to 30^(1/3) = 3.10723250595
Approximately rounded to 3.12.
Answer 2
Answer:  this is the cube root of 30: 3.1072325059538588668776624275224

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7) Given that Sn=3-2^(-4n)is the sum of the first n terms of a sequence.
Un is the n term.
a) Express Un+1 in terms of n.
b) Deduce that the
sequence is a geometric progression.

Answers

Answer:

Step-by-step explanation:

s_(n)=3-2^(-4n)\ns_(n+1)=3-2^(-4(n+1))=3-2^(-4n) *2^(-4)\ns_(n+1)-s_(n)=3-2^(-4n)*2^-4-3+2^(-4n)

=2^(-4n)-2^(-4n)*2^(-4)\n=2^(-4n)(1-2^(-4))\n=2^(-4n)((2^4-1)/(2^4))\n=2^(-4n)(15)/(16)\nU_(n+1)=15*2^(-4(n+1))

If 28% of a sum is 100.80 what is the sum

Answers

$360.00*.28= 100.80 

Or do a portion  

28%/100%=100.8/x 

Then cross multiply 

10080=28x 

x=360

Carla adds together the multiples of 3, in order and tell her friends to guess which number was the last one she added if her total is 84​

Answers

Answer:

28

Step-by-step explanation:

I know that 20 times 3 equals 60 and that 24 plus 60 equals 84 so we need to find out what times 3 equals 24 I know that 8 times 3 equals 24 so we add 20 and 8 to get our answer 28

What is the scientific notation of 0.0121

Answers

You move to the right, so the exponent is gonna be negative.
1.21 * 10-²

Erin byus a bag of peanuts that weighs three fourths of a pound. Later that week, the bag is two thirds full.how much does the bag of peanuts weigh now? Show your work.

Answers

Weight of peanuts in a full bag = ¾ pounds
Weight of the bag when it is 2/3 full
Then
1 full bag = ¾ pounds
2/3 full bag = [(3/4)*(2/3)                     
                   = ½ pounds

So the weight of the peanuts when the bag is two thirds full is ½ pounds.


To find the percent for 16 does it increase or decrease?

Answers

16=16%so, it increases because decreasing mean you are going down.
Hope it helps!