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nexus9112 [7]
2 years ago
11

Julie buys a pair of jeans that cost $39. If they have a 25% discount, what is the sale price of the jeans?

Mathematics
1 answer:
NISA [10]2 years ago
5 0

Answer:

$29.25

Step-by-step explanation:

39 x .25 = 9.75

39 - 9.75 = 29.25

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14 5 18 24 15 28 34 _ what number is needed to complete the pattern
AlekseyPX
Minus 9, add 13, add 6, mus 9, add 13, add 6, minus 9 is next

34-9=25
the blank is 25
4 0
3 years ago
A container manufacturer plans to make rectangular boxes whose bottom and top measure x by 4x. The container must contain 12ft^3
zheka24 [161]

The height of the container should be equal to 2.57 cm, so as to minimize cost.

<h3>How to calculate the height?</h3>

First of all, we would determine the volume of the rectangular container by using this formula:

Volume = l × w × h

Where:

  • l represents the length.
  • w represents the width.
  • h represents the height.

Substituting the given parameters into the formula, we have;

Volume = x × 4x × h

Volume = 4x²h

At a volume of 12 ft³, we have:

12 = 4x²h

h = 12/4x²

h = 3/x²

For the total area of top and bottom, we have:

Area = (x × 4x) + (x × 4x)

Area = 4x² + 4x²

Area = 8x² sq. units.

Thus, the cost of top and bottom is given by:

Cost = 8x² × 1.50

Cost = $12x²

For the total area of all four sides, we have:

Area = (x × h) + (x × h) + (4x × h) + (4x × h)

Area = xh + xh + 4xh + 4xh

Area = 10xh sq. units.

Thus, the cost of all four sides is given by:

Cost = 10xh × 4.50

Cost = $45xh.

Also, the cost function would be given by:

C(x) = 12x² + 10xh

C(x) = 12x² + 10x(3/x²)

C(x) = 12x² + 30/x

Taking the first derivative, we have:

dC/dx = 24x - 30/x²

24x = 30/x²

24x³ = 30

x³ = 30/24

x = 1.08

Therefore, the height will be:

h = 3/x²

h = 3/1.08²

h = 3/1.1664

Height, h = 2.57 cm.

Read more on minimum height here: brainly.com/question/27308167

#SPJ1

5 0
2 years ago
Expand 3(-5q + 4).<br><br> A.5q + 12<br><br> B.-15q + 4<br><br> C.-15q + 12<br><br> D. 5q + 12
Ksenya-84 [330]
_Award brainliest if helped! 
(-5q * 3)  + (4 *3 ) = -15q + 12 
The answer is C. 
5 0
3 years ago
Read 2 more answers
I NEED HELP. What is the answer?
Lina20 [59]

Answer:

B

Step-by-step explanation:

Here’s what B has:

Min: 24

Q1: 27

Median: 31

Q3: 33

Max: 34

Although Choice A and B were really close with their five number summaries, out of the two of them, only B had a maximum value of 34, like the one in the box plot shown above.

7 0
2 years ago
What is the slope of line a?
marta [7]

Answer:

-1/3

Step-by-step explanation:

Slope is defined as "rise over run". If you count out the units, you should be able to see that your rise is 1 and your run is 3 and is pointing downward, so your answer is -1/3.

Alternatively you could use Slope Formula: m = \frac{y2-y1}{x2-x1}

8 0
3 years ago
Read 2 more answers
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