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
Alla [95]
3 years ago
9

What times what equals -30 but also can be added together and equal -4

Mathematics
1 answer:
Step2247 [10]3 years ago
5 0

Answer:

Step-by-step explanation:

xy=-30

y=-30/x

x+y=-4

x-30/x=-4

x²-30=-4x

x²+4x-30=0

x^2+4x-30=0\\x=\frac{-4\pm\sqrt{16+120} }{2} \\=\frac{-4\pm\sqrt{136} }{2} \\=-2\pm\sqrt{39} \\=-2+\sqrt{39} ,-2-\sqrt{39} \\y=\frac{-4}{-2+\sqrt{39} } ,\frac{4}{2+\sqrt{39} }correction write ~-30 ~in~place~of~-4~in~the~end

You might be interested in
It is 11 a.m. in the Eastern Time Zone; therefore, what is it in the Pacific Time Zone
makvit [3.9K]
The pacific timezone is 3 hours ahead so its 1:00 Am 
8 0
3 years ago
Read 2 more answers
What is the derivative of e^(2x)
KIM [24]
Using the chain rule: The derivative of e^u is (e^u)(u').  Notice that e^u is rewritten exactly as is and then multiplied by the derivative of the exponent.  
Let u=2x. So u'=2  
So the derivative of e^u is e^(2x)*2 This can also be written as 2e^(2x).
5 0
3 years ago
If f(x) =
givi [52]

Answer:

i thin correct answer is b

8 0
3 years ago
URGENT!! ILL GIVE<br> BRAINLIEST! AND 100 POINTS <br><br> The answer is not D
Verdich [7]

Answer:

b

Step-by-step explanation:

3 0
1 year ago
State the X- and Y- intercepts of each function. <br><br> -1/2x + 3y = -3
Dafna1 [17]
For the equation -1/2x+3y=-3
 the x-intercept=6
 the y-intercept=-1
7 0
3 years ago
Other questions:
  • How to turn 6/3,5/3 &amp; 8/3 into whole fractions
    13·2 answers
  • 3(x−2)+5x=18 what is the value of x
    12·1 answer
  • If 2 objects cost 40 dollars how much would 7 objets cost?
    11·2 answers
  • Use the given data to find a regression line that best fits the price-demand data for price p in dollars as a function of the de
    6·1 answer
  • One side of equilateral triangle is represented with the expression-2x+8 and other 3x-2 find perimeter
    12·1 answer
  • Two tracking stations are on the equator 158 miles apart. A weather balloon is located on a bearing of N42°E from the western st
    11·2 answers
  • Blah blah blah Help me please!!!
    9·2 answers
  • Jayda takes her dog Rolo to obedience training once each week. Jayda bought a box of 96 dog treats and split them evenly into b
    8·1 answer
  • Please help me please
    9·2 answers
  • I rlly need help on this
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!