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MakcuM [25]
3 years ago
7

Someone pls help me on 3 and 4!!!!!! Mark you as

Mathematics
1 answer:
masya89 [10]3 years ago
3 0
3. Simplified Expression

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Consider the following sequence
wlad13 [49]

Answer:

a₇ =  2.375

Step-by-step explanation:

There is a common ratio r between consecutive terms, that is

r = \frac{-76}{152} = \frac{38}{-76} = \frac{-19}{38} = - \frac{1}{2}

This indicates the sequence is geometric with nth term

a_{n} = a₁ (r)^{n-1}

where a₁ is the first term and r the common ratio

Here a₁ = 152 and r = - \frac{1}{2} , then

a_{n} = 152 (-\frac{1}{2}) ^{n-1} , so

a₇ = 152 (-\frac{1}{2}) ^{6} = 152 × \frac{1}{64} = 2.375

3 0
3 years ago
Read 2 more answers
The diagonals of a parallelogram are 24 meters and 40 meters and
Naddika [18.5K]

Answer:

  28 m

Step-by-step explanation:

The longer side can be found using the Law of Cosines. The semi-diagonals are of length 12 and 20 m, and the angle between them facing the long side is 180° -60° = 120°.

  c^2 = a^2 +b^2 -2ab·cos(C)

  c^2 = 12^2 +20^2 -2·12·20·cos(120°) = 144 +400 +240 = 784

  c = √784 = 28

The longer side is 28 meters.

8 0
3 years ago
76.98 divided by 45.2
Stella [2.4K]

Answer:

1.7030973451327434

Step-by-step explanation:

4 0
3 years ago
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You and your friend each purchase an equal number n of magazines. Your magazines cost $1.50 each and your friend’s magazines cos
yanalaym [24]

Answer:

7

Step-by-step explanation:

Hope this helped!

3 0
3 years ago
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Please help me with this!
TEA [102]

Answer:

y=2x+3

Step-by-step explanation:

you should see how to get from one number to the next.

I noticed by multiplying an input by 2 then adding 3 I reach my output.

I would use this for each input to find that it would equal my output every time I used the rule

5 0
3 years ago
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