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ss7ja [257]
3 years ago
5

The first term of an arithmetic sequence is -30 and the common difference is 8. Find the 20th term.

Mathematics
1 answer:
Sedaia [141]3 years ago
4 0

Answer:

122.

Step-by-step explanation:

nthe term = a1 + d(n - 1) so here:

20th term = -30 + 8(20 - 1)

- 30 +  152

= 122.

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Which expression is equivalent to 8a + 14?<br> 2(2a + 12)<br> 4(4a + 10)<br> 4(2a+8)<br> 2(4a +7)
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Read 2 more answers
6 (x-6) = -3 (-x + 3)
Bond [772]
You have to distribute!
6(x) = 6x and 6(-6)=-36
So now you have 6x-36=-3(-x+3)
Now do the same on the other side.
-3(-x)=3x -3(3)=-9
So now, 6x-36=3x-9
Combine the like terms:
Subtract 3x in both sides.
6x-3x=3x
Now: 3x-36=-9
Add 36 in both sides.
3x=27
Divide by 3 on both sides to get x alone.
3x/3= x 27/3=9
X=9
5 0
3 years ago
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