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worty [1.4K]
3 years ago
8

What is 2.85 to the nearest tenth?

Mathematics
2 answers:
zavuch27 [327]3 years ago
7 0

You round it up to 2.9

Maru [420]3 years ago
6 0

The answer is 2.9. You would round up since there is a 5

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Hello from MrBillDoesMath!

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Correct question:

a sequence U1, U2,U3...... is defined by the relation U_{n +1} = 2U_n +5. if U1 =2, find U2​ and U3

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Step-by-step explanation:

Given sequence;

U_{n +1} = 2U_n +5

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U_{n +1} = 2U_n +5\\\\U_2 = 2(U_1) + 5\\\\U_2 = 2(2) + 5\\\\U_2 = 4 + 5\\\\U_2 = 9

Solving for U3;

U_3 = 2(U_2) + 5\\\\U_3 = 2(9) + 5\\\\U_3 = 18 + 5\\\\U_3 = 23

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3 years ago
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