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
kenny6666 [7]
3 years ago
15

The sum of two integers is 8 and their product is -20.What are the integers?​

Mathematics
1 answer:
emmasim [6.3K]3 years ago
8 0

Answer:

The answer to your question is

x = -2 and y = 10     or   x = 10 and y = -2

Step-by-step explanation:

          x + y = 8   (1)      from (1)    x = 8 - y

         xy = - 20    (2)

       

Solve them by substitution

      (8 - y) y = - 20

      8y - y² = -20

      y² - 8y - 20 = 0

   ( y - 10) (y + 2) = 0

    y - 10 = 0              and      y + 2 = 0

   <u> y1 = 10 </u>                               <u>y2 = -2</u>

 x1 = 8 - 10                             x2 = 8 - -2

 <u>x1 = -2</u>                                  <u> x2 = 10</u>

You might be interested in
Help stuck on question number 10
Zolol [24]

Answer:

y = 2/3x - 5  or   in standard form 3y = 2x - 5

Step-by-step explanation:

Remember this fact: Parallel lines have the same slope

Step 1   Solve for y  so that the equation is in the slope- intersect form

         2x - 3y = 6

          -3y = -2x + 6  

           -3y/-3  = -2x/-3 + 6/-3

             y = 2/3 x -2        

  now we know the slope is 2/3  or

   when the equation is in Standard form Ax + By = C   you can use this fact:  slope = - A/B    so  the slope = -2/-3 = 2/3

    Remember the   Parallel lines have the same slope

     Find the y-intersect "b"     use the slope = 2/3 and point (6, -1)

      y = mx + b

       -1 = 2/3(6) + b

       -1 = 4 + b

       -5 = b    

Now write the equation of line that is parallel to the given line and passes through  point (6, -1)

y = 2/3x - 5  or  in standard form 3y = 2x - 5

5 0
3 years ago
Review the bar graph below:
Scrat [10]

Answer:

B. 12.5%

Step-by-step explanation:

Add all the hours together to get 20. We make the assumption that 20 is 100% since it is our output value. We next represent the value we seek with x. From step 1, it follows that 100%=20. In the same vein, x%=2.5.This gives us a pair of simple equations:

100%=20(1)

x%=2.5(2)

By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS  (left hand side) of both equations have the same unit (%); we have

\frac{100}{x}=\frac{20}{2.5}

Taking the inverse (or reciprocal) of both sides gives us this:

\frac{x}{100} =\frac{2.5}{20}

>> x=12.5\%  

Therefore, 2.5 is 12.5% of 20.

5 0
3 years ago
80% of 60 is 1/5 of what number?
Oksi-84 [34.3K]

Well, if 80% of 60 is 48, and 48x5 is 240, 80% of 60 is 240.

Answer: 240

Hope this helps! Xo


7 0
3 years ago
Determine the domain and the range of the relation. <br>(-3,1), (4,2), (-3,6), (5,6)​
fgiga [73]

Answer:

Domain (-3, 4, 5)

Range (1, 2, 6)

Step-by-step explanation:

Domain is your x so all of the values that can go into a relation or function (which is your input) are called Domain. Domain is also all of the set of elements of ordered pair ( which is the x coordinates).

Range is your y so all the values that can go into a relation or function ( which is your output) are called Range. Range is also all the set of second elements of ordered pair ( which is the y coordinates).

So, basically you just look at all the number that come first so say you have

(1,2), (2,3), (3,4)

Your first numbers to each point are (1, 2, 3) which is your Domain

then look at the second number which are (2, 3, 4) which is your Range.

Hope this helps!

6 0
3 years ago
Can someone help me draw a figure in math?
11Alexandr11 [23.1K]

Answer:

make it 3 long and 1 tall

3 0
3 years ago
Read 2 more answers
Other questions:
  • A student recorded the following animal weights: 25 pounds, 16.2 pounds, and 33 pounds. What is the appropriate level of accurac
    10·1 answer
  • PLEASE ANSWER
    5·1 answer
  • 0.6667 converted into a fraction in simplest form
    14·1 answer
  • What numbers are if i devide them i get 5 and if multiply i get 5
    9·2 answers
  • How do I simplify the value of y= 200,000(1.06)15
    6·2 answers
  • The length of one leg of a right triangle is 3 times the length of the other, and the length of the hypotenuse is 10. What is th
    14·2 answers
  • PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER!!
    12·1 answer
  • HELLPPP PLEASEEEEEEEEE :))))))
    14·2 answers
  • Pls help me!!!!!!!!!!!!!!
    8·1 answer
  • I DO NOT HAVE A LOT OF TIME SO PLS BE FAST
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!