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Dennis_Churaev [7]
3 years ago
12

(20 points) Can someone explain to me how to multiply polynomials? Practice question: (y - 3) (y - 4)

Mathematics
1 answer:
kramer3 years ago
6 0

Answer:

y² -7y+12

Step-by-step explanation:

first, you have to multiply each character on the first parenthesis to the second one, one by one. just like the picture attached.

then, combine all of the same variable. like the 2 variable that has y.

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Fffffffffffffffffffffffffffffffffffffffffffrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrreeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
AfilCa [17]
The answer is 8 dude
5 0
3 years ago
Read 2 more answers
To download movies off the internet, you must pay $1.99 per movie, plus a one time fee of $5.50. Write an expression to show the
fgiga [73]

Answer:

1.99n+5.50

Step-by-step explanation:

per movie means you multiply the price of each movie, 1.99, with the number of movies, n. You then simply add 5.50 because it is a one time fee.

7 0
3 years ago
Read 2 more answers
68 1/4% as a decimal
eduard

Answer:   The correct answer is:  " 0.6825 ".

_______________________________________________

Step-by-step explanation:

_______________________________________________

We are asked to convert:  " 68 \frac{1}{4} % " ;  to a "decimal" .

_______________________________________________

1)  Rewrite:  " 68 \frac{1}{4} " ;   as a "decimal value" :

           " 68 \frac{1}{4} "  =   68 + \frac{1}{4} ;

         →  " \frac{1}{4} "  =  1 / 4  =  1 ÷ 4 =  0.25  . (use calculator).

Or:     →    " \frac{1}{4} "  =  " \frac{?}{100} " ;

   

→  Find the "?" value:

_______________________________________________

Let us consider the "denominators" ;

          →    4 * (what value)  =  100 :  

            →  100/ 4 = 100 ÷ 4 = 25 .

So:   4 * 25  = 100;  

So, to find the "?" value in the numerator:

→   1 * 25 = ("?") ;  

→   1 * 25 = 25 ;

_______________________________________________

So, we have:

_______________________________________________

→    " \frac{1}{4} "  =  " \frac{?}{100} " ;

Rewrite; and replace the "?" value with our know value:  " 25 " :

→    " \frac{1}{4} "  =  " \frac{25}{100} " ;

Note that:  " \frac{25}{100} "  ;

                        =  25/100 = 25 ÷ 100  = 0.25  .  {Use calculator.}.,

               Or:  25 ÷ 100 = ?   ;  

→  When dividing by "100" ;  we take the number; and move the decimal point  back 2 (two) spaces;  since "100" has 2 (two) zeros.

                             →   25 ÷ 100  =  25.  ÷  100  =  .25;  

                                   →  write as:  " 0.25" .

_______________________________________________

So:  " 68  \frac{1}{4} "  =   68  +  0.25 =   68.25  .

As such:  " 68  \frac{1}{4} % "  =  68.25 % ;

_______________________________________________

Now, we write:  " 68.25 % " as a decimal ;

<u>Note</u>:  " % " ; or "percent" ;  means "per hundred" ; or "parts per hundred" ;

or;  "divide by 100" ;

_______________________________________________

 So;  to write:  " 68.25 % " as a decimal ;

                         →   " 68.25 ÷ 100 "  =  0.6825 .  {← Use calculator.}.

                 Or:   → 68.2 ÷ 100 = ?   ;  

→  When dividing by "100" ;  we take the number; and move the decimal point  back 2 (two) spaces;  since "100" has 2 (two) zeros.

                             →   " 68.25 ÷ 100 "  ÷  100  =  .6825 ;  

                                   →  write as:  " 0.6825 " .

_______________________________________________

The answer is:  " 0.6825 " .

_______________________________________________

Hope this answer is helpful to you!

          Wishing you the best in your academic pursuits

                — and within the "Brainly" community!

_______________________________________________

6 0
3 years ago
The sum of a negative number and six is less than or equal to five.
Gala2k [10]

Answer:

-x≤-1

Step-by-step explanation:

Let x be the unknown number. We know x is negative, so we put a negative sign in front of it. Sum is the answer of adittion, so we add 6. We also know that 5 is more than or equal to -x+6.

-x+6 ≤ 5

We can simplify the answer by subtracting six on both sides and then dividing by -1 on both sides.

-x≤-1

x≤1

5 0
2 years ago
Perform the indicated operation and write the result in standard form: (-3+2i)(-3-7i)
zlopas [31]

Answer:

23+15i

Step-by-step explanation:

(-3+2i) (-3-7i)

multiply -3 w (-3+2i) and multiply -7i w (-3+2i)

9-6i+21i-14i^2

combine like terms

9+15i-14i^2

i squared is equal to -1 so

9+15i-(14x-1)

9+14+15i

23+15i

hope this helps :)

6 0
3 years ago
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