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vlada-n [284]
3 years ago
11

Find the sum of the arithmetic series if a1=−52,a28=−79,and n=28

Mathematics
1 answer:
Radda [10]3 years ago
5 0
I think the answer is A but i could be wrong
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Kelso sold digital cameras on her website. She bought the cameras for $65 each and included 60% markup to get the selling price.
Butoxors [25]
Find 60% of 65 then add it to 65

0.6 x 65 = 39

now add it to 65:

39 + 65 = 104

They are selling them for 104$
 
6 0
3 years ago
Where do I put the parentheses in 21-8-6=7
Sliva [168]

Answer:

around 21-8 so the equation would look like this (21-8)-6=7

Step-by-step explanation:

you do this because if u put the parentheses around 8-6 you would get 21- (8-6)= 19 because 21 - 2 = 19 so you have to put them around 21-8 to get the right answer

7 0
3 years ago
Read 2 more answers
Help please thank you
Ad libitum [116K]
In order for the triangle to be isosceles, we have to set two lengths of the triangle equal to each other. 

Let's take the lengths 5x-12 and x+20 and set them equal to each other. 

5x - 12 = x + 20 

Combine like terms by moving them over to their respective sides.

Subtract x from both sides of the equation. 

4x - 12 = 20 

Add 12 to both sides of the equation. 

4x = 32 

Divide both sides by 4. 

x = 8 

Check your answer by substituting. 

5x - 12 = x + 20

5(8) - 12 = 8 + 20

40 - 12 = 28 

28 = 28

Solution: x = 8 




5 0
3 years ago
Use the distributive property to find two expressions that are equivalent to 7(3x - 4)
ehidna [41]
I could only figure out one... sorry! Good luck

The answer is: 21x-28
7 0
3 years ago
Any1 know the answers for this?
Bezzdna [24]
X=4 because you combine 2+4 and subtract -6 then divide
7 0
3 years ago
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