Exercice

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For the 3 exercice plsss

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Show done work.

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70c?

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20c

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5a) i'm assuming u1 = 0.5, u2 = 5
d = u2 - u1 = 5 - 0.5 = 4.5
u10 = u1 + 9d = 0.5 + 9 × 4.5 = 0.5 + 40.5 = 41

5b) u5 = 5, u10 = -18
5d = u10 - u5 = -18 - 2 = -20
d = -4
u52 = u10 + 42d = -18 + 42 × (-4) = -18 - 168 = -186

6. S = (a1 + an)/2 × n

a) S = (1 + 15)/2 × 15 = 8 × 15 = 120
b) S = (1 + 7)/2 × 7 = 4 × 7 = 28
c) S = (8 + 15)/2 × 8 = 23 × 4 = 92
d) S = (7 + 50)/2 × 44 = 57 × 22 = 1254

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Thanks youuu

And for the 7 you understand?

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If a, b and c are first 3 terms of an arithmetical progression then
a + c = 2b
a + b + c = 54
b + 2b = 54
3b = 54
b = 18

Now we need to find such a and c so that they give 54 - 18 = 36 in sum and abc = 5670
After trying some numbers we'll find that
a = 15, b = 18, c = 21 works perfectly
15 + 18 + 21 = 54
15 × 18 × 21 = 5670

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Thanks

For the five you don’t calculate « r » no?

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r is the same d i'm assuming

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d is the r

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Okkk thankssss you very very

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@mild portal send your questions here, no need to go in dms

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Okk

@naive karma so please

You can help me for this pleaseee

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Sorry, but i really want to sleep and i don't understnad 90% of what's written there and don't want to translate it. Imma ping a helper and maybe someone else will help

<@&727457814523674674>

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Ok no pb

No chance I have 0 in my homework lmao

Thanks for the older exercice

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I would help if it wasnt 2am and i wasnt dying

Okay byee

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Ohh in your country it’s 2 am

😦

@naive karma probably if you can I give my homework

At 2pm

For France

Is 5pm for you where you live I think

Thanks

[small heath]

still need help here ? o:

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Yess