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Natali [406]
3 years ago
13

Mrs. Harper bought a painting for $60, which was 75% of its former price. What was the former price? (Do not subtract the 75% fr

om 100%. Why)
Mathematics
1 answer:
kari74 [83]3 years ago
5 0
80 bucks b/c if 60 = 75% so u divide 60 by 3 to get 20 = 25% so than you add the 20 onto the 60 and u get 80 

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95 is described as what
jonny [76]
0.95 is rational number

answer is option 2

a rational number<span> is any </span>number<span> that can be expressed as the quotient or fraction
</span>
so 0.95 = 95/100


hope that helps
5 0
3 years ago
Given the exponential function A (x)= P(1+r)^2 what value will or make the function of decay function
4vir4ik [10]

Answer:

r<0

Step-by-step explanation:

The exponential function A(x)= P(1+r)^2 is

  • a decay function, if 1+r
  • an increase function, if 1+r>1.

Thus, for the exponential function to be the exponential decay function the following must hold

1+r

4 0
3 years ago
Which unit would be best for measuring the thickness of a coin?
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Answer:

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3х – 32 = -7х + 28<br> help me
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Answer:

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Step-by-step explanation:

7 0
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Read 2 more answers
Find the dimensions of the rectangle with maximum area that can be inscribed in a circle of radius 10.
Ilia_Sergeevich [38]

Answer:

Step-by-step explanation:

That will be a square with a diagonal of 20

side length of 20sin45

and area of (20sin45)² = 200 units²

prove it you say?

Area of a rectangle is base times height

A = bh

With a radius of 10, the diagonals of any rectangle inscribed will be 20 units

20² = b² + h²

h = \sqrt{400 - b^2}

A = bh

A = b\sqrt{400 - b^2}

Area will be maximized when the derivative is set to zero

           dA/db = \sqrt{400 - b^2} - b²/ \sqrt{400 - b^2}

                   0 = \sqrt{400 - b^2} - b²/ \sqrt{400 - b^2}

b²/\sqrt{400 - b^2} =  \sqrt{400 - b^2}

                  b² = 400 - b²

                2b² = 400

                  b² = 200

                  b = \sqrt{200}

h = \sqrt{400 - b^2}

h = \sqrt{400 - \sqrt{200}^2 }

h = \sqrt{200}

A = bh

A =  \sqrt{200}•\sqrt{200}

A = 200 units²

5 0
3 years ago
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