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
timurjin [86]
3 years ago
9

What two numbers add to 9 and multiply to -70

Mathematics
1 answer:
Alborosie3 years ago
4 0
X, y - the numbers

The numbers add to 9 and multiply to -70.
x+y=9 \\
xy=-70 \\ \\
y=9-x \\
xy=-70 \\ \\
\hbox{substitute 9-x for y in the second equation:} \\
x(9-x)=-70 \\
9x-x^2=-70 \\
-x^2+9x+70=0 \\
-x^2+14x-5x+70=0 \\
-x(x-14)-5(x-14)=0 \\
(-x-5)(x-14)=0 \\
-x-5=0 \ \lor \ x-14=0 \\
x=-5 \ \lor \ x=14 \\ \\
y=9-x \\
y=9-(-5) \ \lor \ y=9-14 \\
y=14 \ \lor \ y=-5 \\ \\
(x,y)=(-5,14) \hbox{ or } (x,y)=(14,-5)

The numbers are -5 and 14.
You might be interested in
Which is part of the process in the formation of hail pellets? They are tossed up and down in clouds. They lose layers of ice an
kondaur [170]

Answer:

they are tossed up and down in clouds

3 0
2 years ago
Someone help me with this geometry homework !!!!!! 10 points!
Reil [10]

Answer:  3a = (0, 1)       3b = (2, 1)      3c = (2.5, 1)      3d = (1.6, 1)

               4a = (2, 3.5)             4b = (2, 3)           4c = (2, 5.375)

<u>Step-by-step explanation:</u>

The length of AB is 6 and is horizontal (affects the x-coordinate)

3a)\quad 6\bigg(\dfrac{1}{2}\bigg)\quad =3\qquad \qquad A(-2, 1) +(3, 0)= C(1,1)\\\\\\3b)\quad 6\bigg(\dfrac{2}{3}\bigg)\quad =4\qquad \qquad A(-2, 1) +(4,0)= C(2,1)\\\\\\3c)\quad 6\bigg(\dfrac{3}{4}\bigg)\quad =\dfrac{9}{2}\qquad \qquad A(-2, 1) +(4.5,0)= C(2.5,1)

3d)\quad 6\bigg(\dfrac{3}{5}\bigg)\quad =\dfrac{18}{5}\qquad \qquad A(-2, 1) +(3.6,0)= C(1.6,1)

***********************************************************************************

The length of AB is 5 and is vertical (affects the y-coordinate)

4a)\quad 5\bigg(\dfrac{1}{2}\bigg)\quad =\dfrac{5}{2}\qquad \qquad A(2, 1) +(0,2.5)= C(2,3.5)\\\\\\4b)\quad 5\bigg(\dfrac{2}{5}\bigg)\quad =2\qquad \qquad A(2, 1) +(0,2)= C(2,3)\\\\\\4c)\quad 5\bigg(\dfrac{7}{8}\bigg)\quad =\dfrac{35}{8}\qquad \qquad A(2, 1) +(0,4.375)= C(2,5.375)

4 0
3 years ago
Can someone help me with these?
andre [41]

Answer:

Luzilândia baiana não ia já ouvi falar em Maranhão que e Rosa do Brasil na rocha godprl e abaixa e viu neon

8 0
3 years ago
Shawndra said that it is not possible to draw a trapezoid that is a rectangle, but it is possible to draw a square that is a rec
ICE Princess25 [194]

Shawndra is correct

 

She made two statements, and both are true:

 

1. It is not possible to draw a trapezoid that is a rectangle.

This is true because a trapezoid<span> is a quadrilateral that has exactly one pair of parallel sides, whereas a rectangle is a parallelogram (i.e. it has two pairs of parallel sides)</span>

 

2. It is possible to draw a square that is a rectangle.

This is true because a rectangle refers to any parallelogram with right angles. A square is also a parallelogram (has two pairs of opposite sides) with right angles. In fact, all squares are rectangles; only that they are a special kind of rectangle, where all the sides are equal in length.

8 0
3 years ago
Read 2 more answers
A) hat contains 4 red marbles and 3 blue marbles. Draw a tree diagram to illustrate the possible outcomes for selecting a marble
Charra [1.4K]

Answer:

there are 7 outcomes.

the chances of one is one in 7 and the chances of two is 1 in 14. the third is somewhere around 43%

Hope this helps!!! Brainliest?!

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Estimate round to nearest ten thousand 649,891 - 35,427
    5·1 answer
  • Express the number 9067.5 in scientific notation to 4 significant figures.
    12·1 answer
  • PLZ HURRY IT'S URGENT!!!!
    12·1 answer
  • ALGEBRA 1 HELP!<br> •GIVING BRAINLIEST!
    14·1 answer
  • What is the answer to 13/56 + 5/7=?
    12·2 answers
  • What is the slope of a line that is perpendicular to the line whose equation is 2y = 3x - 1? -3 - -
    9·1 answer
  • Ella is putting her savings into a retirement fund that will compound her $7000 semiannually at 7% interest. How much will her r
    10·1 answer
  • 6th grade math help me pleaseee
    6·2 answers
  • Hard! !!!!!!!!!!!!<br><br> 123x452-123=
    14·2 answers
  • What is the area of a rectangle with a length of 9
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!