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3 years ago

Solve for x in the equation x squared + 11 x + StartFraction 121 Over 4 EndFraction = StartFraction 125 Over 4 EndFraction.

Mathematics

2 answers:

Strike441 [17]3 years ago

5 0

Answer:

0,09 and -11,09

Step-by-step explanation:

X^2+11x+121/4=125/4

Multiple with 4 we have

4x^2+44x+121=125

4x^2+44+121-125=0

4x^2+44x-4=0

X^2+11x-1=0

$x_{1,2}=\frax{-11+-\sqrt{121+4}}{2}$

X1=0,09

X2=-11,09

ExtremeBDS [4]3 years ago

4 0

Answer:

Step-by-step explanation:

hello :

(x²+11x+121)/4 =125/4

x²+11x+121 =125

x²+11x-4=0

calculate delta......

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Need help with problem 40,41 and 42! 15 points

vovikov84 [41]

Answer:

40) w = 32/3

41) x = 23/4

42) w = 1/12

Step-by-step explanation:

40) Real world problem:

If Lisa takes $7\frac{3}{8}$ of the pie from a total of $w$ slices, then the remaining pie is $3 \frac{7}{24}$ . Find w.

So, the equation would become:

$w - 7 \frac{3}{8} = 3 \frac{7}{24}$

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This can be written as:

$w = 3 + \frac{7}{24} + 7 + \frac{3}{8}$

This is equivalent to $3 + \frac{7}{24} + 7 + \frac{9}{24}$

Since, the denominator is the same, the numerators can be added now.

$\implies w = 10 + \frac{16}{24}$

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Hence, the answer is 32/3.

41) The given equation is: $2 \frac{1}{2} + x = 8\frac{1}{4}$

$2 \frac{1}{2} = \frac{5}{2}$ and

$8 \frac{1}{4} = \frac{33}{4}$

So, $x = \frac{33}{4} - \frac{10}{4}$

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The answer is 23/4.

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$w = \frac{1}{12}$

The answer is 1/12.

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3 years ago

Is 41/50 closer to 9/11 or 10/11? Verify your answer

professor190 [17]

First,
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9/11 = 9 divided by 11 = 0.81

10/11= 10 divided by 11= 0.90

Answer: 9/11 is closer.

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