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polet [3.4K]
3 years ago
5

At the market 5 light bulbs cost 9.85. How much do 7 light bulbs cost?

Mathematics
2 answers:
enyata [817]3 years ago
7 0
Cost = (9.85/5) * 7
=13.79
Leya [2.2K]3 years ago
5 0
The unit rate is $1.97 per lightbulb. Multiply $1.97 by 7 to get 13.79
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How much of the circle is shaded? Write your answer as a fraction in simplest form.
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2/7

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4,11,22,37<br> Find an expression, in terms of n, for the nth term of this sequence.
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Step-by-step explanation:

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The length of a hypotenuse of a 30-60-90 triangle is 4. Find the longest leg.
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check the picture below.

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3 years ago
Find the first four terms of the recursive sequence defined by the following formula: an = an-1 4 where a4 = 2 1 4 , , , 2 1 4.
Elina [12.6K]

The first four-term of the sequence is found by the given equation a_{n-1} = 4a_n is given as 144, 36, 9, and 9/4.

<h3>What is a sequence?</h3>

A sequence is a list of elements that have been ordered in a sequential manner, such that members come either before or after.

The given equation will be

\rm a_n = \dfrac{a_{n-1}}{4} \\\\a_{n-1} = 4a_n

And

a_4 = 2 \dfrac{1}{4} = \dfrac{9}{4}

For n = 4, we have

\rm a_{4-1} = 4a_4\\\\a_3 \ \ \  = 4*\dfrac{9}{4} \\\\ a_3 \ \ \ = 9

For n = 3, we have

\rm a_{3-1} = 4a_3\\\\a_2 \ \ \  = 4*9 \\\\ a_2 \ \ \ = 36

For n = 2, we have

\rm a_{2-1} = 4a_2\\\\a_1 \ \ \  = 4*36 \\\\ a_1 \ \ \ = 144

More about the sequence link is given below.

brainly.com/question/21961097

7 0
2 years ago
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