If the nth term of a sequence is 12n+2 what is the 7th term

Answers

Answer 1

Answer: just subsitute 7 for n
12(7)+2
84+2
86
86 is 7th term

Answer 2

Answer: $a_7=12\cdot7+2=84+2=86$

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Solve the system of equation below using any method. 3x-2y=30 2x+3y=-19
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I need all these answered please-1) 6i-i
2) (12+3i)-(2+6i)
3) 5i(1+2i)
4) 8+4i divided by 4

Answers

easy
pretend i is just a placeholder
but remember that i=√-1 so i²=-1
1.
6i-i=6i-1i=5i

2. (12+3i)-1(2+6i)
12+3i-2-6i
12-2+3-6i
10-3i

3.
5i(1+2i)
5i+10i²
5i+10(-1)
5i-10
-10+5i

4.
(8+4i)/4
(1/4)(8+4i)
8/2+4i/4
4+1i
4+i

Given a mean of 8 and a standard deviation of 0.7, within how many standard deviations of the mean do the values 7.7, 8.4, 9, 8, and 6.9 fall?2

1

0

3

Answers

*We can to find the upper limit of the data by using the values given in the options.
If 2
the upper limit is 8 + 2*0.7 = 9.4

If 1
the upper limit is 8 + 1*0.7 = 8.7

If 0
the upper limits is 8+ 0*0.7 = 8

If 3
the upper limit is 8 + 3*0.7 = 10.1

Therefore, the answer is
3
since all the values are included

Ali wants to buy a piano. the piano measures 19/4 feet long. she has a space 5 feet

Answers

She'll have enough room cause 19/4 needs to be a mixed number, which is 4 3/4 feet.
Hope this helps C=

Simplify(-8) exponent 2

Answers

( -8 )^2 = ( - 8 ) * ( -8 ) = + 64.

How high is the tree 4m,5m=cm

Answers

If 5m = cm, then m = 1/5cm
Then 1/5cm x 4m =
4/5cm

(I think)

Explain whether the figuers in b and d have the same area

Answers

b and d do have the same area d is just b facing the other way