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Alenkasestr [34]
3 years ago
13

Jude has 5 pairs of sunglasses that cost the same in his online shopping cart, then decides to get only 2. Each pair of sunglass

es is the same price. Let p represent the cost of each pair. Write an expression for the original cost, and the difference in cost.
Mathematics
1 answer:
hoa [83]3 years ago
5 0

Answer:

Step-by-step explanation:

5p is the original price

Then 2p is the new price

5p-2p=3p

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Answer:

x = 2 sqrt(3) or x = -2 sqrt(3) or x = sqrt(3) or x = -sqrt(3)

Step-by-step explanation:

Solve for x:

-8 + x^2 + (x^2 - 8)^2 = 20

Expand out terms of the left hand side:

x^4 - 15 x^2 + 56 = 20

Subtract 20 from both sides:

x^4 - 15 x^2 + 36 = 0

Substitute y = x^2:

y^2 - 15 y + 36 = 0

The left hand side factors into a product with two terms:

(y - 12) (y - 3) = 0

Split into two equations:

y - 12 = 0 or y - 3 = 0

Add 12 to both sides:

y = 12 or y - 3 = 0

Substitute back for y = x^2:

x^2 = 12 or y - 3 = 0

Take the square root of both sides:

x = 2 sqrt(3) or x = -2 sqrt(3) or y - 3 = 0

Add 3 to both sides:

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Substitute back for y = x^2:

x = 2 sqrt(3) or x = -2 sqrt(3) or x^2 = 3

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Answer: x = 2 sqrt(3) or x = -2 sqrt(3) or x = sqrt(3) or x = -sqrt(3)

8 0
3 years ago
Find the AREA of this shape
vredina [299]
104 square yards

The formula for area of a rectangle is length times width.

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A = 13 x 8
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Since the units on each side are yards, the area is in square yards.
4 0
3 years ago
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Step-by-step explanation:

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finlep [7]

Answer:

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Subtract 240 from each side

4x+240-240 = 360 -240

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Divide by 4

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