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Pie
3 years ago
13

Solve x2 - 12x + 5 = 0 by completing the square.

Mathematics
1 answer:
vodomira [7]3 years ago
5 0
The answer would be the first one, (x-6)^2=31. To explain this
first, you must expand and simplify the equation and it would look like this,
(x-6)(x-6)=31. Then, solve and simplify the equation and will look like this, "x^2 - 12x + 36 = 31". Since 36 and 31 can be simplified more.
Just transpose 31 to the left and it will become negative and it will look like this,
x^2 + 12x + 36 - 31 = 0
Then the answer would be x<span>^2 + 12x + 5 = 0</span>
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lisov135 [29]

Answer:

Step-by-step explanation:

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5 0
3 years ago
A jeweler who buys a ring from a jewelry maker for $125 marked with the price by 135% for sale in the store what is the selling
siniylev [52]
Marked up by 135% means
new price=original price+(original price times markup) =125+(125 times 1.35)=293.75
tax
293.75 times 0.075=22.03125

293.75-22.03125=271.718 so aprox $271.72


selling price would be $271.72
6 0
4 years ago
Read 2 more answers
The Regency Hotel has enough space at its entrance for six taxicabs to line up, wait for guests, and then load passengers. Cabs
maksim [4K]

Answer:

The appropriate solution is:

(1) 22.81 minutes

(2) 0.171

Step-by-step explanation:

According to the question, the values will be:

The service rate of guess will be:

= 5+3.5

= 8.5 \ minutes

The mean arrival rate will be:

\lambda =\frac{60}{5}

  =7.5 \ cabs/hr

The mean service rate will be:

\mu= 7.05 \ cabs/hr

(1)

The average time a cab must wait will be:

⇒ W_q=22.95-\frac{1}{7.05}

⇒       =\frac{161.798-1}{7.05}

⇒       =\frac{160.798}{7.05}

⇒       =22.81 \ minutes

(2)

The required probability will be:

⇒ P(X\geq 6)=\frac{1-2.115}{1-7.5}

⇒                  =\frac{-1.1115}{-6.5}

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6 0
3 years ago
Which numbers should replace the question marks?
slava [35]

The first missing number in the sequence is 35, and the last missing number is 77.

<h3>Next number of the given sequence</h3>

The two missing numbers in the given sequence is calculated as follows;

= ?    49     63    ?

The given sequence is factor 7 which increases by 2

= 7 x 5      7 x 7       7 x 9     7 x 11

= 35         49          63          77

Thus, the first missing number in the sequence is 35, and the last missing number is 77.

Learn more about sequence here: brainly.com/question/6561461

#SPJ1

7 0
2 years ago
you can perform 10 push ups in 25 seconds. write an equation that represents the relationship between time x and the number of p
vagabundo [1.1K]

Answer:

Step-by-step explanation:

(10 pushups)/(25 sec) = (⅖ pushup)/sec

Or,

(25 sec)/(10 pushups) = (2.5 sec)/pushup

6 0
3 years ago
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