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kramer
3 years ago
7

Brett bought three pairs of jeans and five polo shirts. the jeans that regularly sell for 79$ were 35% off and the polo shirts t

hat regularly sell for 39$ were 15% off. If sales tax is 5.75% and he gave the cashier 350$, how much did he receive back in change?
Mathematics
2 answers:
artcher [175]3 years ago
4 0
The change he got back was $30.20
Marizza181 [45]3 years ago
4 0
If the jeans are 35% off, he had to pay 65% the price
$79 x .65 x 3 = $154.05
If the polo was 15% off, he had to pay 85% the price
$39 x .85 x 5 = $165.75
Sales tax = price is 1.0575 (154.05 + 165.75) = $338.19
$350 - $338.19 = $11.81 in change

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Answer:

11

Step-by-step explanation:

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2 years ago
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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

<u>Step-by-step explanation:</u>

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

<u>The first term :</u>

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

⇒ a_{1} = 612

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

<u>The common ratio (r) :</u>

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

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<u>To find the recursive rule :</u>

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.

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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

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3 0
3 years ago
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Write the rate and unit rate. 609 kilometers in 7 hours ???​
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vivado [14]
Consider the picture attached.

From right triangle trigonometry: 

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The length of the vector v can be determined using the Pythagorean theorem:

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Thus, to make v a unit vector, without changing its direction, we need to divide v by |v|=68.8. 

This means that the x and y components will also be divided by 68.8, by proportionality.

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<span>(67/68.8)i + (-15/68.8)j=0.97 i + (- 0.22)j
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6 0
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