2 years ago

The formula n(n+1)/2

Mathematics

1 answer:

mafiozo [28]2 years ago

5 0

The answer is in the attached image

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Find the equation of the line with slope 1/3 and y interception (0,-2)

Andreyy89

Answer:

y=(1/3)x-2

Step-by-step explanation:

Plug into equation of y=mx+b

y=(1/3)x-2

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3 years ago

Caluculate the distance kris walks in 8 days if she walks 7/8 mile each day

Arlecino [84]

8x7=56
56 ÷ 8 = 7

Kris walked 7 miles in 8 days

3 0

3 years ago

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If 3x−y=12, what is the value of <br> 8x<br> 2y<br> ?

anygoal [31]

If 3x-y=12, what is the value of 8x/2y?

Answer:

$\frac{8x}{2y} =\frac{4x}{3x-12}$

Step-by-step explanation:

$3x-y=12$

$-y=12-3x$

$y=3x-12$ -------------------------(equation 1)

Now,

$\frac{8x}{2y} =\frac{8x}{2(3x-12)}$ ---------(from equation 1)

$=\frac{8x}{6x-24}$

$=\frac{8x}{2(3x-12)}$

$=\frac{4x}{3x-12}$

Therefore, the value of $\frac{8x}{2y} =\frac{4x}{3x-12}$

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3 years ago

Which answer represents the series in sigma notation -3+(-1)+1+3+5

professor190 [17]

Answer r u supposed to add u have to add all that up or u wont get the write answer.

Step-by-step explanation:

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3 years ago

Mary waits tables at a dinner every weekend to make extra money. She donates 20% of her tip to her favorite charity and then kee

AURORKA [14]

250/5=50
20% is same as 1/5
1-1/5=4/5
4/5 is equal to 80%
4 times 50 = 200
Mary kept 200 dollars to herself

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3 years ago

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