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lana [24]
2 years ago
5

I know 5his is easy for yall but for me is not I need some help please I'm giving brainlist.​

Mathematics
1 answer:
Anna71 [15]2 years ago
4 0

Answer:

$2.99

Step-by-step explanation:

Given parameters:

Selling price = $19.95

Discount percentage  = 15%

Unknown:

Amount of discount = ?

Solution:

To find the amount of discount, ;

   Discount amount  = discount percentage x selling price

  Discount amount  = \frac{15}{100} x 19.95

  Discount amount  = $2.99

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X*y=72
x = 5y-2

x=72/y
72/y=5y-2

72=5y^2-2y
5y^2 -2y - 72 = 0
(5y+18)(y-4)=0
y = -18/5 discard
or y = 4
4x=72
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3 years ago
Whats the value of yif y=cos(arcsin1/2)
Setler [38]

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That's 30° .

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A rancher has 200 ft of fencing to enclose two adjacent rectangular corrals.
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Simplify: -7 • 12<br><br>Giving brainliest^^<br><br>A) -84<br><br>B) -74<br><br>C) 74<br><br>D) 84
riadik2000 [5.3K]
The answer should be A) -84
7 0
3 years ago
Read 2 more answers
The Petri dish shown has no lid. What is the surface area of the outside of the Petri dish? Round to the nearest tenth. A cylind
Bess [88]

Answer:

12566.4 mm²

Step-by-step explanation:

The Petri dish shown has no lid. What is the surface area of the outside of the Petri dish? Round to the nearest tenth. A cylindrical-shaped Petri dish with a radius of 50 millimeters and a height of 15 millimeters.

TSA = Total Surface Area

CSA = Curved Surface Area

TSA of open cylinder = CSA of cylinder + area of base or top

= 2πrh + πr²

= πr(2h + r)

From the above question:

r = 50mm

h = 15mm

Hence,

= π × 50 (2 × 15 + 50)

= π × 50 (30 + 50)

= π × 50(80)

= π × 4000

= 12566.370614mm²

Approximately = 12566.4 mm²

The Surface Area of the petri dish with no lid = 12566.4 mm²

3 0
2 years ago
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