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3 years ago

4 tomatoes cost $3.40. what is the unit rate

Mathematics

1 answer:

LiRa [457]3 years ago

3 0

The unit rate should be 0.85 cents since, 3.40 divided by 4 equals 0.85. Hope this helps and have a nice day!

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a cell phone company plans to market a new smartphone. they have already sold 612 units durning the first week of the campaign.

Vadim26 [7]

The first term is 612.

The common ratio is 1.08 and

The recursive rule is $a_{n} = a^{n-1} \times r$

Step-by-step explanation:

the question to the problem is to write the values of the first term, common ratio, and expression for the recursive rule.

The first term :

In geometric sequence, the first term is given as $a_{1}$ .

⇒ $a_{1} = 612$

Now, the geometric sequence follows as 612, 661, ........

The common ratio (r) :

It is the ratio between two consecutive numbers in the sequence.

Therefore, to determine the common ratio, you just divide the number from the number preceding it in the sequence.

⇒ r = 661 divided by 612

⇒ r = 1.08

To find the recursive rule :

A geometric series is of the form a,ar,ar2,ar3,ar4,ar5........

Here, first term $a_{1} = a$ and other terms are obtained by multiplying by r.

Observe that each term is r times the previous term.
Hence to get nth term we multiply (n−1)th term by r .

The recursive rule is of the form $a_{n} = a^{n-1} \times r$

This is called recursive formula for geometric sequence.

We know that r = 1.08 and $a_{1}$ = 612.

To find the second term $a_{2}$ , use the recursive rule $a_{n} = a^{n-1} \times r$

⇒ $a_{2} = a^{2-1}\times r$

⇒ $a_{2} = a^{1}\times r$

⇒ $a_{2} = 612\times 1.08$

⇒ $a_{2} = 661$

3 0

3 years ago

Simplify this expression: -(x+2)+4 i have no idea im not good with math ;(

topjm [15]

ANSWER :

- ( x+ 2 ) + 4

-x - 2 + 4

-x + 2

8 0

3 years ago

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Simplify this expression: cos t(sec t − cos t)

Nostrana [21]

$\cos t \, (\sec t - \cos t)$
$= \cos t \, (\frac{1}{\cos t} - \cos t)$
$= 1 - \cos^2 t$
$= \bf sin^2 t$

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3 years ago

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If the three angles of a quadrilateral are 120, 130, 100 then what is the fourth angle?

nalin [4]

Answer:

c. 40

Step-by-step explanation:

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2 years ago

What is the scale factor of this dilation?

Luden [163]

The answer is 3/5 because i did the math on my paper and yea

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