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alexira [117]
2 years ago
8

If a = 7 - 4√3, find the value of a + 1/a​

Mathematics
1 answer:
irga5000 [103]2 years ago
5 0

Answer:

Step-by-step explanation:

To calculate a+1/a, we first need to calculate for a.

a = 7 - 4 * \sqrt[2]{3}

square root of 3 = 1.73

a = 7 - 4 * 1.73

a = 7 - 6.9

a = 0.1

0.1 + 1 / 0.1 = 0.1 + 10 = 10.1

Now, in case 4 wasn't being multiplied with the square root of 3, and instead, it was four root of 3, I am gonna do the calculations again:

a = 7 - \sqrt[4]{3}

a = 7 - 1.31

a = 5.69

5.69 + 1 / 5.69 = 5.69 + 0.17 = 5.86

Hope I Helped!

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Solve x
d1i1m1o1n [39]

Step-by-step explanation:

x^{2} - 4x - 7 = 0

First, let's move the 7 to the right-hand side so we can determine what constant we'll need on the left-hand side to complete the square:

x^{2} - 4x = 7

From here, since the coefficient of the x term is -4, we know the square will be (x - 2) (since -2 it's half of -4).

To complete this square, we will need to add (-2)^{2} to both sides of the equation:

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x^{2} - 4x + 4 = 7 + 4

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x - 2 = \pm \sqrt{11}

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3 years ago
Pam bought a pair of shoes on sale for $22.40. If this was 20%. Off the original price, find the original price of the shoes
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Answer:

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Write the equation of the circle graphed below
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Answer:

Step-by-step explanation:

Comment

The basic equation of a circle is

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a and b are the coordinates of the center of the circle

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Development of the equation

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