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DerKrebs [107]
2 years ago
12

The first and last term of an A. P are 1 and 121 respectively. Find the number of terms in the A.P and the common difference bet

ween them if the sum of the term is 1281​
Mathematics
1 answer:
LuckyWell [14K]2 years ago
6 0

Answer:

No.of terms=21

Common difference=6

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PLEASEE HELPP ME IM DESPERATE​
miss Akunina [59]

Answer:

I can help with Q "4" as -

It uses triangle congruence test -  here we use - SAS, as

one side is equal as it is given

both the  angles are 90 degree

and they share a same side

so -

8x = 6x + 5

8x - 6x = 5

2x = 5

x = 2.5

RU = 6x+ 5 = 6 (2.5) + 5 = 20

( I am not so sure but I think this is the answer )

3 0
3 years ago
Do you expect 1/n to be larger or smaller than 1/n+1?Do you expect 1/n to be larger or smaller than 1/n+2? Explain why.
Fudgin [204]

Answer:

Step-by-step explanation:

fortnight

5 0
3 years ago
7x - 2 = 2y
ser-zykov [4K]
\left\{\begin{array}{ccc}7x-2=2y\\3x=2y-1\end{array}\right\\\\substitution:\\\\3x=7x-2-1\\3x-7x=-3\\-4x=-3\ \ \ /:(-4)\\x=\frac{3}{4}\\\\2y=7\cdot\frac{3}{4}-2=\frac{21}{4}-2=\frac{21}{4}-\frac{8}{4}=\frac{13}{4}\\2y=\frac{13}{4}\ \ \ \ /:2\\y=\frac{13}{8}\\\\Answer:x=\frac{3}{4};\ y=\frac{13}{8}.
6 0
3 years ago
Find the common difference for the given sequence shown. 56,49,42,35
ddd [48]

Answer:

-7

Step-by-step explanation:

let the first term be a

thus, a=56

common difference d= U2-U1 = 49-56= -7

4 0
3 years ago
PLEASE HELP GIVING 70 POINTS NEED THIS BEFORE 2:30
Amiraneli [1.4K]

Answer:

(-4,2)

Step-by-step explanation:

A reflection means you flip the graph up, then the point goes to (-4,2).

If this helps please mark as brainiest would really appreciate it

8 0
3 years ago
Read 2 more answers
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