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
storchak [24]
3 years ago
6

I need help and I have to do what it says

Mathematics
1 answer:
Andreas93 [3]3 years ago
3 0
X^2 + 6x = -2 is a quadratic equation that can be solved by completing the square.

x^2 + 6x + (6/2)^2 - (6/2)^2 = -2

Rewriting this, (x+3)^2 = -2 + (6/2)^2 = -2 + 9 = 7

tAKING THE sqrt f both sides, we get     x+3 = plus or minus 5.

Finally, x = -3 plus or minus 5, which boils down to x=2 and x= -8.
You might be interested in
A store sells peanuts by the pound. Jerry paid 4.59 for 5.4 pounds of peanuts. At that rate, how much would he pay for 7.8 pound
nikdorinn [45]
If $4.59 = 5.4 peanuts
         $x = 7. 8 peanuts

Cross multiply and you get:

5.4x = (4.59)(7.8)
      x = ((4.59)(7.8)) / 5.4
      x = $6.63
6 0
3 years ago
Plz help me with this
Delicious77 [7]

<em>Answer:</em>

<em>63°</em>

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

<em>Hi there ! </em>

<em>ABCD parallelogram => ∡A = ∡C</em>

<em>13x - 41 = 6x + 15</em>

<em>13x - 6x = 15 + 41</em>

<em>7x = 56</em>

<em>x = 56 : 7</em>

<em>x = 8</em>

<em>∡C = 6×8 + 15 = 48 + 15 = 63°</em>

<em>Good luck !</em>

6 0
4 years ago
Is 0.21 smaller or bigger than a half?
Savatey [412]
Smaller, since a half equals to 0.50
3 0
3 years ago
Read 2 more answers
A nontoxic furniture polish can be made by combining vinegar and olive oil. The amount of oil should be three times the amount o
katen-ka-za [31]

Answer:

Oil: 10.5 oz Vinegar: 3.5 oz

Step-by-step explanation:

If the amount of vinegar is the variable x than the amount of oil is 3x. this means that x+3x=14 or 4x=14. Which means x=3.5 so vinegar is 3.5 while oil is three times that or 10.5.

8 0
3 years ago
I will give 50 points and brainliest amd whatever u want pls its urgent PLS ​
frez [133]

Answer:

The answer to your question is 24 cm³

Step-by-step explanation:

Data

Initial volume = 2/5

Additional volume = 42 cm³

Final volume = 4/7

the total volume of the glass = ?

Process

1.- Write a proportion to help you solve the problem

                  42 cm³  -------------------- 4/7 of the total

                   x            -------------------  7/7

2.- Solve the proportion

                  x = (7/7 x 42) / 4/7

3.- Simplification

                  x = 42 / 4/7

                  x = 168/7

                 x = 24 cm³                  

3 0
3 years ago
Other questions:
  • Referring to triangle ABC, find the area of the triangle.
    7·1 answer
  • What is the formula for this?
    14·2 answers
  • Simplify picture below
    13·1 answer
  • Find the distance between the points (-3, 9) and (6, -5). Round the answer to the nearest tenth.
    5·2 answers
  • Please help, this is due tomorrow
    15·1 answer
  • In the bar graph shown, what is the total world population?
    15·1 answer
  • Mr. custom is correcting the class's math homework on customary units. which of the following measurements is reasonable
    12·1 answer
  • Match each compound inequality to its solution
    10·1 answer
  • WHO WANTS FREE BRAINLY AND TEN POINTS???
    10·2 answers
  • What is the domain and range of the problem? How many beats will she have in half an hour? Is the graph discrete or continuous?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!