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AnnyKZ [126]
2 years ago
9

What is the twentieth term in the sequence 23, 43, 63, 83 …?

Mathematics
1 answer:
gogolik [260]2 years ago
8 0

Answer:

403

Step-by-step explanation:

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Find three consecutive integers whose sum in 36
ratelena [41]
ANSWER: 11, 12, 13

3 consecutive integers:
x \\ x + 1 \\ x + 2
"Sum" means Add

x + x + 1 + x + 2 = 36
Combine like-terms
3x + 3 = 36
Solve for X
3x + 3 = 36 \\
Subtract 3 from both sides
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Divide by 3 on both sides
x = 11
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Ilia_Sergeevich [38]

Answer:

B

Step-by-step explanation:

yes, we need two numbers that multiplied with each other results in -48.

that means already that one of them has to be positive and the other negative.

that gives us (with all +/- alternating sign combinations)

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to pick from there we see that the "middle" term is -2x.

that means that the absolute value of the negative number has to be 2 more than the positive number (so that when adding the intermediate multiplication terms we end up with -2x).

the only choice is therefore 6 and -8.

and that makes B the right answer.

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