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
Write the number with 5 hundreds and 2 thousands
mina [271]

Answer:

500 2000

Step-by-step explanation:


6 0
3 years ago
There is a bag filled with 4 blue, 3 red and 5 green marbles.
zhannawk [14.2K]

Answer:

You are selecting marbles with replacement. The marble selections (trials) are independent and the marble selection follows the binomial distribution.

The probability of selecting a red marble the first time is 1313.

(This is because 4 out of 12 marbles are red and412412 reduces to 1313.

The probability of selecting a red marble the second time is 1313.

The marble selections are independent and you can multiply the two probabilities to get the following:

probability of getting 2 reds = (13)2(13)2

=19=19.

So the probability of getting two reds is 1919.

7 0
3 years ago
Question 5 (1 point)
Damm [24]

Answer:

36 and 49

Step-by-step explanation:

Please mark me as brainlyest

5 0
2 years ago
Please help ASAP!!!!!!!!!!
3241004551 [841]

Answer:

gfhgfhgfujghgdghhtcfhggjufhhggfhg

Step-by-step explanationbfd:

5 0
3 years ago
Solve for X <br> Solve for X <br> Solve for X
yan [13]

Answer: it is 4

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Please help and show work
    6·1 answer
  • An accountant makes 57,000 per year. what is the monthly salary
    5·1 answer
  • In which figure is point G an orthocenter ?
    6·2 answers
  • What is true about 3 times 9 ? 1) it’ is 3times smaller than 9 2) it is 3 less than 9 3) it is 3times as much as 9 4) it is 3 mo
    12·2 answers
  • What's the least common denominator of 3/4 4/5 and 2/3
    13·2 answers
  • I need help on #5 please!
    15·1 answer
  • 16 POINTSS!! HELPPPP The graph shows the cost per day of electricity over a seven-day period.
    14·1 answer
  • Write an equation in the form y=mx+b for the line which passes through (1,-10) and (-7,-2)​
    15·1 answer
  • Hiya how r u <br> Plz answer this question and explain<br> ☃️
    9·1 answer
  • Which iequailty model and solution set best represents the possible side lengths of miriam's bulletin board?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!