59 Answered Questions for the topic Sum

12d

#### Evaluate using Limit Definition

Evaluate1∫(x+x^2)dx0by using the limit definition. (Hint ∑k=1 k^2 = n(n+1)(2n+1)/6 )

08/06/19

#### mathematics whole numbers

a group of 3 adults and 10 children bought a ticket to watch dance performance. each adult ticket cost $7 more than each child ticket. the group paid a total of $125. what was the cost of each...
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07/07/19

#### Use the sum-to-product formula to simplify the expression: If sin41∘+sin19∘=sinA∘,0<A<90, then A= ____degrees

please provide all steps for the solution!!!!

05/05/19

#### I want to find the exact sum of the power series.

I have the power series (n3^n-1)/(2^2n) going from 1 to infinity. How do I find the exact value for the series. I believe that we just use a power series function that we already know and based off...
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09/25/18

#### two numbers have a sum of 44. The quotient of the larger number and three is 12 more than the smaller number. Find the numbers.

two numbers have a sum of 44. The quotient of the larger number and three is 12 more than the smaller number. Find the numbers.

09/14/18

#### what is the gcf and sum of 15 and 60

15 + 60 The sum of the numbers as a product of their GCF is

09/05/18

#### if the sum of twice a number and negative 7 is increased by 8 the result is 16 greater than the opposite of the number what is the number

if the sum of twice a number and negative 7 is increased by 8 through 16 greater than the opposite of the number what is the number

08/02/18

#### !!!!!algebra 2 question! need help ASAP!!!!!!

Explain why we can have a converging infinite series when 0 < r < 1. Hint: Use "sum of a finite geometric series" as a basis for your explanation. ...
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07/01/18

#### Sum of direction angles of vector [0,1,0] is?

pi/2, 0, pi or 3pi/2? Also explain plz thank you.

05/12/18

#### Calculating upper and lower limits for a linear function

I am asked to calculate the lower limit and upper limit (L5 and U5) for the linear function y=13-3x, between x=0 and x=4.
I have found that Δx=4/5, and that x0 =0. However, I am getting my...
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04/22/18

#### It takes a month for a horse, two months for a goat and three months for a sheep to eat a cart of hay.

It takes a month for a horse, two months for a goat and three months for a sheep to eat a cart of hay. How many months does it take for a horse, a goat and a sheep to eat a cart of hay together?

02/11/18

#### How do I find convergence of this sum, without using integral test ( i is imaginary unit; sum goes from 1 to inf ) :

∑ ( 1/( (5i)^n + n) )

02/11/18

#### How can I find convergence of this sum, without using the integral test: (sum goes from 1 to inf)

∑(sqrt(n+2) - 2sqrt(n+1) + sqrt(n))

01/11/18

#### sum of two numbers

the sum of two numbers is 20. one is three more than the other. What are the numbers?

01/02/18

#### One number is four less than three times another. If their sum is increased by five, the result is 25. Find the numbers.

Thank you in advance!💙

01/02/18

#### The sum of two numbers is 63. Three times the smaller number is 14 more than twice the larger number. Find the numbers.

Thank you in advance!💙

10/18/17

#### the conjugate of a sum is the sum of the conjugates of the individual complex numbers

please help I have no idea what this means and I need the work to show how to do it

02/08/17

#### The sum of 4 numbers is 60 word problem

The sum of 4 numbers is 60.
The first number was increased by four
The second number was decreased by four
The third number was multiplied by four
The fourth number was divided by...
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09/17/16

#### It took Candice 35mins. walk from his house to the park 20km away. It took her just 25mins. walk back home. What is his average speed

I used in here the formula: Speed=distance/time.
Correct me if im wrong, I got 20kph as my answer. I'm quite unsure with it. Can you please show me the correct equation/solution in this word...
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09/16/16

#### Johnny spent 1/4 of his money on a new belt. 1/5 of it on a soda and $50 cake. If he had $85 left, how much money did he start with?

Kindly give me an equation here in arriving the answer. Thanks

09/16/16

#### Three sandwiches and a hotdog cost $65, while one sandwich and 3 hotdogs $35. How much two sandwiches and 2 hotdogs cost?

I couldn't get the right equation in this word problem. What must be the correct solution?Your best explanation would be a great help. Thanks.

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