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seraphim [82]
3 years ago
11

The regular price of a pair of glasses is $90. The glasses are on sale for a discount price of $76.50 What is the percent of the

discount ?
Mathematics
2 answers:
natima [27]3 years ago
6 0

Answer:

15%

Step-by-step explanation:

\frac{76.50}{90}=\frac{x}{100}         Set up a proportion.

90x=7,650      Cross-multiply.

x=85               Divide both sides by 90.

100-85=15    The discounted price is 85% of the regular price so the                                          

                        discount is 15%.

Nutka1998 [239]3 years ago
5 0
Percent of the discount is 15%
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68, 78,34  dreegs

Step-by-step explanation:


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3 years ago
Find the slope of the line passing through the points<br> (-6,-5) and (4,4)
marshall27 [118]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
PLEASE HELP ASAP!!
andriy [413]
If I did this correctly it simplifies to 0 = 8. So I think B is the correct answer. Hope this helps!!
6 0
3 years ago
Hey!
noname [10]

Answer:

A. Cylinder + cone

<u>Volume is the sum of volumes:</u>

  • V = Vcon + Vcyl = 1/3πr²h₁ + πr²h₂
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<u>Surface area of cone:</u>

  • A = A=πr(r+√(h₁²+r²)) = π*9(9 + √(9²+12²)) = 678.6 cm²

<u>Surface area of cylinder minus bases:</u>

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<u>Total surface area:</u>

  • 678.6 + 6785.8 = 7464.4 cm²

-------------------------------------------------

B. Cube+ pyramid

<u>Volume:</u>

  • V = a³ + (1/3)a²h = a³ + (1/3)a²√(l²-(a/2)²)
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<u>Surface area of pyramid:</u>

  • A = a² + 2al = 8² + 2*8*10 = 224 cm²

<u>Surface area of cube minus bases:</u>

  • A = 4a² = 4(8²) = 256 cm²

<u>Total surface area:</u>

  • A = 224 + 256 = 480 cm²
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3 years ago
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