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Crank
3 years ago
5

Which term in the arithmetic sequence 11, 4,-3 . . . is -129?​

Mathematics
1 answer:
telo118 [61]3 years ago
4 0

Answer:

23rd term

Step-by-step explanation:

Plz mark as Brainliest!

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Please help this is due in 2 periods.
Ksenya-84 [330]

Answer:

21

Step-by-step explanation:

Use Pemdas.

Parentesis first so 5+4 = 9 and 8-6=2 so, 9X2=18+3=21

6 0
2 years ago
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Morgan jogged51.2kilometersin one weekkelly jogged6 less whats my answer
Andrei [34K]
If you would like to know how many kilometers did Kelly jog that week, you can calculate this using the following steps:

Morgan: 51.2 kilometers
Kelly: Morgan - 6 kilometers = 51.2 - 6 = 45.2 kilometers

The correct result would be 45.2 kilometers.
7 0
3 years ago
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Simplify (Are all division)<br><br>2+4i<br>3i<br><br>3+2i<br>4+i<br><br>2i^11
Alla [95]

We\ know:\ i=\sqrt{-1}\to i^2=-1

\dfrac{2+4i}{3i}=\dfrac{2+4i}{3i}\cdot\dfrac{3i}{3i}=\dfrac{6i+12i^2}{9i^2}=\dfrac{6i+12(-1)}{9(-1)}\\\\=\dfrac{6i-12}{-9}=\dfrac{2i-4}{-3}=\dfrac{4}{3}-\dfrac{2}{3}i

\dfrac{3+2i}{4+i}=\dfrac{3+2i}{4+i}\cdot\dfrac{4-i}{4-i}=\dfrac{(3+2i)(4-i)}{4^2-i^2}\\\\=\dfrac{(3)(4)+(3)(-i)+(2i)(4)+(2i)(-i)}{16-(-1)}=\dfrac{12-3i+8i-2i^2}{16+1}\\\\=\dfrac{12+5i-2(-1)}{17}=\dfrac{12+5i+2}{17}=\dfrac{14+5i}{17}=\dfrac{14}{17}+\dfrac{5}{17}i

2i^{11}=2i^{10+1}=2i^{10}i^1=2i^{2\cdot5}i=2i(i^2)^5=2i(-1)^5=2i(-1)=-2i


Used:\ (a+b)(a-b)=a^2-b^2

6 0
3 years ago
Choose the equation of the line that contains the points (1,-1) and (2,2)
natka813 [3]
(1,-1)(2,2)
slope = (2 - (-1) / (2 - 1) = 3/1 = 3

y = mx + b
slope(m) = 3
use either of ur points...(2,2)...x = 2 and y = 2
now we sub and find b, the y int
2 = 3(2) + b
2 = 6 + b
2 - 6 = b
-4 = b

so ur equation is : y = 3x - 4
7 0
3 years ago
HI, can someone help me? volume of the square
Leokris [45]

Answer - 288

Step-by-step explanation:

i use the formula V=a2 h/3

3 0
3 years ago
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