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lakkis [162]
2 years ago
10

If a1=4 and an =2an-1 – 1 then find the value of a4.

Mathematics
1 answer:
musickatia [10]2 years ago
7 0
1 = 4

a2 = -2(a1) - 1
a2 = -2(4) - 1
a2 = -9

a3 = -2(a2) - 1
a3 = -2(9) - 1
a3 = -19

Can you do a4 and a5 and answer?
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Ahmad run 5 kilometres. If he completed 15% of the race. How many kilometres is the race?
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Answer:

x = 33.33 kilometers

Step-by-step explanation:

you could make use of the percent, base, and rate formula here. we know that 15% is the rate, 5 kilometers is the percent, therefore what we are looking for is our base.

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therefore, the race is 33.33 kilometers.

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Step-by-step explanation:

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