1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
olasank [31]
3 years ago
11

Do any of you know how to do this

Mathematics
2 answers:
noname [10]3 years ago
8 0

Answer:

Step-by-step explanation:

I certainly do know how to do this.  I would normally steer you towards long division of polynomials, but doing that here in this forum is quite literally impossible.  But synthetic division works!  So we will use that method of division of polynomials instead.  Ok?

First of all, if the area of a rectangle is, for example, 18 sq ft, and a width is 3, then by the area of a rectangle, A = LW, then 18 = 3L and by division, we know that L has to be 6.  Right?  Same thing here.  We will divide the quadratic by the width x + 3 to find the length.  

In the world of quadratics, if x + 3 is a 0 of the quadratic, then x + 3 = 0 and

x = -3.  We will put -3 in a little box and then, in descending order, the coefficients of the quadratic which are 1, 8, and 15:

-3|    1    8    15

   __________

The first thing to do is bring down the first number and multiply it by the number in the box.  We will bring down the 1 and multiply it by -3 and put the product up under the 8:

-3|    1    8    15

            -3

     _________

      1

Now we will add:

-3|     1     8     15

              -3

     -------------------

       1     5

Multiply -3 by 5 and put that product up under the 15:

-3|     1     8     15

              -3    -15

    ---------------------

       1      5  

Now we will add:

-3|     1      8     15

               -3   -15

    ---------------------

        1       5      0

Because we got a 0 remainder, we know that x + 3 divides into the quadratic evenly.  The numbers there on the bottom, the 1 and the 5, give us the depressed polynomial, which is a degree less than the polynomial we started with.  We started with a second degree, so the depressed polynomial is a first degree (linear) polynomial.  Those numbers are the coefficients of the depressed polynomial, which is:

x + 5.

That means the length of the rectangle is x + 5.

If you multiply the width, x + 3, times the length, x + 5, which is the definition of area, you will get the second degree polynomial you started out with as the area.

I hope this helped and didn't confuse!

Gre4nikov [31]3 years ago
5 0

Answer:

(x + 5)

Step-by-step explanation:

{x}^{2}  + 8x + 15 \\  {x}^{2}  + 3x + 5x + 15 \\ x(x + 3)5(x + 3) \\ (x + 3)(x + 5) \\ length \:  =  \frac{(x + 3)(x + 5)}{(x + 3)}  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: = (x  + 5)

You might be interested in
David is visiting his aunt for the Thanksgiving weekend. He drove 60% of the trip at 40 mph and the rest at ‘x’ mph. The average
Brut [27]

Answer:

D. 80 mph

Step-by-step explanation:

d- distance

  • d/50= 0.6d/40+0.4d/x
  • 1/50= 0.3/20+0.4/x
  • 0.4/x= 0.02- 0.015
  • x= 0.4/0.005
  • x= 80 mph
4 0
3 years ago
Read 2 more answers
If string str1 = "forest" and string str2 = "school", then what is the value of str1.compareto(str2);?
REY [17]
<span>This is an java command program. String 1 is stands for str1= '' forest '' accepted within quote marks. String 2 is stands for str1= '' school'' accepted within quote marks the command compareto will cause the output will display as shown below : str1.compareto(str2); when run this command we will get the output like this ; forest school ================================================== the model program is like this; { String str1 = " forest " ; String str2 = "school "; System.out.println(); System.out.println("String 1: " + str1); System.out.println("String 2: " + str2);</span>
8 0
3 years ago
Please give answer i gives biranlist
zhannawk [14.2K]

Answer:

The answer should be 54, lmk if it works

3 0
3 years ago
Could i get some helpp with oneee
Lina20 [59]

Answer:

3d one

Step-by-step explanation:

6 0
3 years ago
Yes
Tems11 [23]

The amount that Tony and his friend's will spend at the dell can be found by

writing an expression for the total cost.

<h3 /><h3>Response;</h3>
  • The amount that they spent at the dell is <u>$16</u>
<h3 /><h3>Method used in finding the amount that was spent;</h3><h3>Given;</h3>

The number of Toby's friends = 3

Number of people that ate lunch, n = Toby + His friends = 1 + 3 = 4

The cost of the sandwiches and drinks

\begin{tabular}{|c|c|c}Item&Cost(\$)\\Sandwich&2.75\\Drink &1.25\end{array}\right]

<h3>Solution;</h3>

The expression that gives the amount Toby and his friends spend altogether is therefore;

Amount spent = n × (Cost of  a sandwich + cost of a drink)

Which gives;

4 × (2.75 + 1.25) = 16

  • The amount Tony and his friends spent is<u> $16</u>.

Learn more about mathematical expressions here:

brainly.com/question/10892115

5 0
2 years ago
Other questions:
  • 15 is 30% of what number?
    7·1 answer
  • In the space at the right, draw a triangle : Use an algebraic expression to label the length of each side. Write an expression f
    5·1 answer
  • Please answer this question now
    8·1 answer
  • Solve for the width in the formula for the area of a rectangle.
    10·1 answer
  • The table shows the favorite subjects of students in a recent survey order them from least to greatest (26.)
    13·1 answer
  • What is the solution of the equation over the complex numbers
    11·1 answer
  • Guys I need help please actually answer and explain! Will mark brainlest!
    14·1 answer
  • Use a polynomial Identity to expand this squared binomial<br> (x + 6)2
    14·1 answer
  • Need help wit this problem
    15·1 answer
  • ASAP!!! PLEASE HELPPP!!Write an equation for the following sentence, then solve for the unknown value.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!