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3 years ago

Which is the simplified rational expression for r2-4r+5/r-4

Mathematics

1 answer:

Sliva [168]3 years ago

8 0

Step-by-step explanation:

$\frac{ {r}^{2} - 4r + 5}{r - 4} - \frac{ {r}^{2} + 2r - 8}{r - 4} \\ = \frac{ ({r}^{2} - 4r + 5) - ( {r}^{2} + 2r - 8) }{r + 4} \\ = \frac{ {r}^{2} - {r}^{2} - 4r - 2r + 5 - 8 }{r - 4} \\ = \frac{ - 6r - 3}{r - 4}$

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4x - 17 = 32 what is x

katrin [286]

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3 years ago

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This famous clock tower has a clock face with a diameter of 23 feet. What is the approximate area of this clock face

pashok25 [27]

Answer:

Therefore the approximate area of this clock face is 415.3 feet².

Step-by-step explanation:

Given:

Clock is of Circular Shape,

Diameter = 23 feet

$Radius =r =\dfrac{diameter}{2}=\dfrac{23}{2}=11.5\ feet$

To Find :

Area of Clock Face = ?

Solution:

Area of Circle having Radius 'r' is given as,

$\textrm{Area of Circle}=\pi r^{2}$

Substituting the values we get

$\textrm{Area of Clock Face}=3.14\times (11.5)^{2}=415.265=415.3\ feet^{2}$

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3 years ago

Matt said 2x-7=2(x-7) has infinitley many solitions. is he correct? Justify Matts answer or show he is correct.

Flauer [41]

2x - 7 = 2x - 14
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Matt is incorrect, there are actually 0 correct answers to this equation.

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3 years ago

The sum of two consecutive integers is 329

saw5 [17]

A = first integer
a + 1 = 2nd integer

a + a + 1 = 329
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2a = 329 - 1
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a + 1 = 164 + 1 = 165

so ur 2 consecutive integers are : 164 and 165

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3 years ago

54 is the product of victors age and 3

VMariaS [17]

Answer:

Step-by-step explanation:

divide 54 by 3 to get his age

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2 years ago