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VikaD [51]
3 years ago
5

Help please

Mathematics
1 answer:
Digiron [165]3 years ago
7 0

Answer:

Option C.

Step-by-step explanation:

Shortest way to solve this question is to find the factors of the given expression.

The given expression is (x² + 13).

Now we have to factorize it.

(x² + 13) = x² + (√13)²

            = x² + [-(i)²√(13)²]  [Since i = √(-1)]

            = x² - (i√13)²

            = (x - i√3)(x + i√3) [Since (a² - b²) = (a + b)(a - b)]

Option C will be the answer.

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Mr.Robinson bought a novel at a bookstore on sale for 20% off its regular price of $29.99. Me.Chang bought that same novel at a
antoniya [11.8K]

Answer:

mr Robinson

Step-by-step explanation:

really just a guess but since it's 20% off it would make the price some what in the $15 price range but then Mr Chang would also get a good deal because I guess it would also be in the $15 price range too so I'll go with mr Robinsons deal

6 0
3 years ago
A palindrome is a number that reads the same forward and backward. For example, 2442 and 111 are palindromes. If 5-digit palindr
Oduvanchick [21]

Answer:

27 Palindromes are possible in the given situation.

Step-by-step explanation:

As a palindrome is a number that reads the same forward and backward and in our case, it is a 5 digit palindrome.

Let's suppose the 5 digit palindrome is ABCBA:

As we know that the digits on 4th and 5th positions will be the same as the digits on 1st and 2nd positions.

  1. The number of possibilities that a digit can come on 1st position are 3
  2. The The number of possibilities that a digit can come on 2nd position  are 3
  3. The number of possibilities that a digit can come on 3rd position are 3

So the total number of possibilities that we can get 5 digit palindromes from digits 1, 2 and 3 are:

= 3 x 3 x 3

Total Palindromes = 27

8 0
3 years ago
Determine the expression you can substitute for y in to solve the system below.
FromTheMoon [43]

Answer:

Step-by-step explanation:

given are the two following linear equations:

                       f(x)  =  y  = 1 +  .5x

                       f(x)  =  y  = 11 -  2x

Graph the first equation by finding two data points.  By setting first x and then y equal to zero it is possible to find the y intercept on the vertical axis and the x intercept on the horizontal axis.

           If x = 0, then  f(0)  =  1  + .5(0)  =  1

           If y = 0, then  f(x)  =  0  = 1  +  .5x

                                               -.5x  =  1

                                                    x  =  -2

           The resulting data points are  (0,1)  and  (-2,0)

Graph the second  equation by finding two data points.  By setting first x and then y equal to zero it is possible to find the y intercept on the vertical axis and the x intercept on the horizontal axis.

           If x = 0, then  f(0)  =  11  - 2(0)  =  11

           If y = 0, then  f(x)  =  0  = 11  -  2x

                                               2x  =  11

                                                    x  =  5.5

           The resulting data points are  (0,11)  and  (5.5,0)

At the point of intersection of the two equations x and y have the same values.  From the graph these values can be read as x = 4 and y = 3.

6 0
3 years ago
Jack orders a salad with 2 dressings for lunch. There are 13 dressings to choose from. How many different ways can he select a s
Bumek [7]

Answer:

26 different ways of selecting a salad

Step-by-step explanation:

multiply 13 times 2 to find the number of possibilities

8 0
4 years ago
Read 2 more answers
PLEASE HELP ME I NEED HELP
Shtirlitz [24]
There's this many Packages and this many cans in each package right? All you have to do is multiply the number of cans and the number of packages to get the total number of cans.

For the cost is the same thing. If you know the cost is this much, multiply the amount of packages×The cost of each package which will give you the total cost. Good luck
3 0
3 years ago
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