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padilas [110]
3 years ago
7

What is the original price if there is a 10% discount and the sale price is 76.50?

Mathematics
2 answers:
Elden [556K]3 years ago
4 0
Let the original price = x
then  76.50 = 0.90x
x = 76.50 / 0.90 = 85 
Allisa [31]3 years ago
3 0
This being algebra, your best bet would be to represent the "original price" by a letter, such as n.

If there's a 10% discount on this item, the price you'd pay would be (1-0.10)n, and this price is $76.50

Solve (1-0.10)n = $76.50 for n.


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Using the formula for volume of a cone, express r in terms of V, h and pi
DiKsa [7]

The volume of the cone is one-third of the volume of the cylinder which is equal to the product of area of the base and the height. The equation is,

<span>    V = (1/3)(pi)(r^2)h          </span>

Dividing both sides of the equation by (1/3)(pi)(h) will give us,

<span>  3V/(pi)(h) = r^2</span>

Taking the square-root of both sides,

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3 0
3 years ago
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A line that is perpendicular to y=-2/7x+9y and that passes through the point (4, -6)
IrinaK [193]
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Find Slope :
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y = -2/7x + 9
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Find y - intercept :
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y = mx + b
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At (4, -6)
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Form equation :
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y = mx + b
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Answer: 2y = 7x - 40
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8 0
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Given:
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The fixed amount charged is 40.

The variable amount is 20 per day.
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3 years ago
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