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Elza [17]
3 years ago
15

The formula n(n+1)/2

Mathematics
1 answer:
mafiozo [28]3 years ago
5 0
The answer is in the attached image

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One month ruby wokred 6 more hours than isaac and svetlana worked 4 times as many as ruby they together worked 126 hours how man
jok3333 [9.3K]
R + R - 6 + 4R = 126
6R - 6 = 126
6R = 126 + 6
6R = 132
R = 132/6
R = 22 (hours Ruby worked)
I = R - 6
I = 22 - 6
I = 16 (hours Isaac worked)
S = 4R
S = 4(22)
S = 88 (hours Svetlana worked)

Finally, let's check our three answers to see if their sum is 126 (the given total of hours worked):
22 + 16 + 88 = 38 + 88 = 126


8 0
3 years ago
After writing part of his novel, Thomas is now writing 16 pages per week. After 4 weeks, he has written 85 pages. Assume the rel
d1i1m1o1n [39]

The initial value is 21 and rate of change is 16 pages per week

<em><u>Solution:</u></em>

Given that After writing part of his novel, Thomas is now writing 16 pages per week

After 4 weeks, he has written 85 pages.

Given that assume the relationship to be linear

Linear relationships can be expressed either in a graphical format or as a mathematical equation of the form y = mx + c

y = mx + c

where "y" is the number of pages written after 4 weeks

x = 4 weeks and m = 16 pages

Therefore,

85 = 16(4) + c

85 = 64 + c

c = 85 - 64

c = 21

Therefore, initial value is 21 and rate of change is 16 pages per week

7 0
3 years ago
Please help 20 points to who ever can
mixer [17]

Answer:

how is your mom doing tell her last night was crazy :D

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which term describes the slope of the line below?
kiruha [24]

Answer:

undefined

Step-by-step explanation:

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3 years ago
paulo has $145 in his savings account he earns $36 a week mowing lawns if paulo saves all his earning how many weeks will he hav
True [87]
The answer is about 12 weeks.
6 0
3 years ago
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