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Dima020 [189]
3 years ago
9

How do you get 24 using 1, -6, -7, -3

Mathematics
1 answer:
Rainbow [258]3 years ago
3 0

Answer:

24

Step-by-step explanation:

We want to set up an expression involving 1, -6, -7, -3.

-6*-3--7+1

We use BODMAS to simplify:

We multiply to get:

18--7+1

We now add to obtain:

18--6

Note that negative negative gives addition.

Therefore:

18+6

This finally simplifies to:

24

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Find the first five terms of the recursive sequence <br> an=-6an-1 where a1=4.5
grandymaker [24]

Answer:

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Step-by-step explanation:

The given recursive definition is,

a_n=-6a_{n-1}, a_1=4.5

This will form a geometric sequence with first term 4.5 and common ratio r=-6.

When n=2, we have:

a_2=-6a_1 \\  \implies \: a_2=-6 \times 4.5 =  - 27

When n=3, we get:

a_3=-6a_2 \\  \implies \: a_3=-6 \times  - 27 =  162

When n=4, we get:

a_4=-6a_3 \\  \implies \: a_4=-6 \times 162 =  - 972

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Therefore the first five terms are:

4.5, -27, 162,-972, 5832

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3 years ago
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