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alyssarosalynn
12.12.2019 •
Mathematics
What is the value of y in the sequence below
2, у, 18,-54, 162
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Ответ:
y=-6
Step-by-step explanation:
Geometric Sequences
Any given sequence is said to be geometric if each term
can be obtained as the previous term
by a constant value called the common ratio.
or equivalently
Looking closely at the sequence 2, y, 18,-54, 162 we can try to find out if it's a geometric sequence or not. We compute the possible common ratios
y=2*(-3)=-6
Now we compute the third term: (-6)(-3)=18
Since we got the third term as given in the original sequence.
So y=-6
Ответ:
a) About 2261.95
b) $11.94
Step-by-step explanation:
a) The lateral area of a cone can be calculated via A=πrl
b) Simple do 2261.95/400 and round to the nearest 1 to get 6. Then multiply 6 by 1.99 to get 11.94
Hope it helps <3