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stiv31 [10]
3 years ago
15

A hyperbola has vertices (5,0) and (-5,0). Its

Mathematics
1 answer:
ivolga24 [154]3 years ago
6 0

Answer:

The equation of the hyperbola   \frac{x^2}{25} - \frac{y^2}{3696} = 1

Step-by-step explanation:

Given hyperbola vertices are (5,0) and (-5,0)

The foci of the hyperbola is (61,0) and (- 61,0) so the foci is lie on x-axis

here the vertex a =5 and foci ('c')= 61

we know the condition c^{2} = a^2+b^2

  now substitute a =5 and c= 61

                            b^2 = 61^2 - 5^2 = 3696

                            a^2 = 25

The equation of the hyperbola   \frac{x^2}{a^2} - \frac{y^2}{b^2} = 1

The equation of the hyperbola   \frac{x^2}{25} - \frac{y^2}{3696} = 1

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The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The d
jek_recluse [69]

Answer:

50%

Step-by-step explanation:

68-95-99.7 rule

68% of all values lie within the 1 standard deviation from mean (\mu-\sigma,\mu+\sigma)

95% of all values lie within the 1 standard deviation from mean  (\mu-1\sigma,\mu+1\sigma)

99.7% of all values lie within the 1 standard deviation from mean  (\mu-3\sigma,\mu+3\sigma)

The distribution of the number of daily requests is bell-shaped and has a mean of 55 and a standard deviation of 4.

\mu = 55\\\sigma = 4

68% of all values lie within the 1 standard deviation from mean (\mu-\sigma,\mu+\sigma) = (55-4,55+4)= (51,59)

95% of all values lie within the 2 standard deviation from mean  (\mu-1\sigma,\mu+1\sigma)= (55-2(4),55+2(4))= (47,63)

99.7% of all values lie within the 3 standard deviation from mean  (\mu-3\sigma,\mu+3\sigma)= (55-3(4),55+3(4))= (43,67)

Refer the attached figure

P(43<x<55)=2.5%+13.5%+34%=50%

Hence The approximate percentage of light bulb replacement requests numbering between 43 and 55 is 50%

4 0
3 years ago
The lengths of the sides of a triangle are consecutive even integers. one fourth of the perimeter is one less than the length of
tia_tia [17]

Answer:

  • 36

Step-by-step explanation:

Let the shortest side be x, the other sides are x + 2 and x + 4

<u>Perimeter is:</u>

  • P = x + (x + 2) + (x + 4) = 3x + 6

<u>It is given that:</u>

  • 1/4P = x - 1

<u>Substitute and solve for x:</u>

  • 1/4(3x + 6) = x - 1
  • 3x + 6 = 4x - 4
  • 4x - 3x = 6 + 4
  • x = 10

<u>Perimeter is:</u>

  • P = 3*10 + 6
  • P = 36
3 0
3 years ago
Read 2 more answers
The total population of an economy is 175 million, the labor force is 125 million, and the number of employed workers is 117 mil
Norma-Jean [14]

Answer:

C. 6.4 percent.

Step-by-step explanation:

Given,

Labor force = 125 million,

The number of employed workers = 117 million,

So, the number of unemployed workers = Labor force - employed workers

= 125 million - 117 million

= 8 million,

Hence, the unemployment rate = \frac{\text{Unemployed employees}}{\text{Labor force}}\times 100

=\frac{8}{125}\times 100

=\frac{8}{5}\times 4

=\frac{32}{5}

= 6.4%

OPTION C is correct.

7 0
3 years ago
Can someone help me with this problem???
Greeley [361]
Area = (39x18)/2 =351
answer = 351 m^2
8 0
3 years ago
Roses are $1.50 each and lilies are $1.25 each. Ellis spent $28.75 for 15 of the flowers. How many of each type of flower did he
sertanlavr [38]

Answer:

He could have bought 23 lilies by itself

Step-by-step explanation:

8 0
3 years ago
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