69 Answered Questions for the topic Sum

03/26/15

What is the sum of the arithmetic sequence 3, 11, 19 ..., if there are 26 terms?
What is the sum of the arithmetic sequence 3, 11, 19 ..., if there are 26 terms?Choose one answer. A. 1,222 B. 1,261 C. 2,486 D. 2,678
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03/23/15

What is the sum of a 34-term arithmetic sequence where the first term is 14 and the last term is 146?
What is the sum of a 34-term arithmetic sequence where the first term is 14 and the last term is 146?Choose one answer. A. 2,550 B. 2,720 C. 2,890 D. 2,982
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03/17/15

What is the sum of a 12-term arithmetic sequence where the last term is 13 and the common difference is -10?
What is the sum of a 12-term arithmetic sequence where the last term is 13 and the common difference is -10?Choose one answer. A. 605 B. 660 C. 748 D. 816
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03/17/15

What is the common difference of a 43-term arithmetic sequence where the first term is -13 and the sum is 9,374?
What is the common difference of a 43-term arithmetic sequence where the first term is -13 and the sum is 9,374?Choose one answer. A. 11 B. 11.5 C. 12 D. 12.5
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03/17/15

What is the sum of the arithmetic sequence 17, 13, 9 ... if there are 40 terms?
What is the sum of the arithmetic sequence 17, 13, 9 ... if there are 40 terms?Choose one answer. A. -2,780 B. -2,440 C. 3,460 D. 3,800
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Sum

03/05/15

The sum of two numbers is 377 and their difference is 107
I need help finding the answer of this question i know it is simple i just dont know how to find the difference
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Sum

02/04/15

How many different scores are possible?
In judging a sporting event, there are 3 judges. Each of these judges holds up a number, either a 1 or a 2 or a 3. The sum of these numbers is the athlete's score. How many different scores are... more
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Sum

02/01/15

The sum of the original two numbers must be?
I  am thinking of two numbers. If I multiply the first by 4 and the second by 3, the sum of the answers is 109. And if I multiply the first by 3 and the second by 4 and add the results, I get 101.... more
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Sum

01/19/15

The sum of two numbers is 89, and their difference is 65. What are the two numbers?
The sum of two numbers is 89, and their difference is 65. What are the two numbers?
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10/29/14

Among all the unit vectors find the one for which the sum is minimal
Among all the unit vectors u= <x,y,z> in R3, find the one for which the sum x + 2y + 5z is minimal.    u=<>?
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Sum

09/15/14

The sum of five and number added to the product of ten and the number is?
The Sum of five and a number added to the product of ten and the number is what?  
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Sum

07/27/14

the sum of two numbers is 72 and one of them is five times the other;what are the two numbers
the sum of three consecutive odd integers is 597.find the integers.
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Sum Sigma

03/26/14

Find the indicated sum
Find the indicated sum (∑^20 n=0) 5(5/3)n=
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03/23/14

write the sum using sigma notation
Write the sum using sigma notation: 1+2+3+4+......+105= A ∑ n=1 B A= B=  
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Sum Sigma

03/21/14

evaluate the sum
(4 sigma k=0) ((-1)k(k+3)2+4)  
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01/05/14

Use the sum or difference formulas to determine: A. sin105 degrees and B. tan15 degrees
This is for my trig class, thanks for the help!
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01/03/14

Rewrite sin(x+pi)+sin(x-pi) as a product.
This is for my trig class. Thanks for the help!
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12/31/13

Use the sum or difference formulas to determine: A. sin105 degrees B. tan15 degrees
This is for my trig class. Thanks for the help!
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Sum

11/20/13

Use the sum formula to fill in the blanks in the identity below.
Use the sum formula to fill in the blanks in the identity below. Give exact answers. Do not use decimals. Your answer should be a fraction or an integer.    sin (x+pi/6)= sin (x)=? cos (x)=?
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