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
The area of a triangle is 30 square centimeters and its base is 10 cm. What is the height in cm of the triangle
Vesnalui [34]

Answer:

The height of the triangle is 6 cm.

Step-by-step explanation:

----------------------------------------

The formula for solving the area of a triangle is  A=\frac{1}{2}bh where b stands for base and h stands for height.

Let's substitute 30 cm^2 for the area and 10 for the base.

30=\frac{1}{2} (10)h

-------------------->>>>

Now, let's solve to find the height.

30=\frac{1}{2}(10)h

Multiply \frac{1}{2} times 10

30=5h

Divide both sides by 5.

6=h

-----------------------------------------

Hope this is helpful.

4 0
3 years ago
:
Degger [83]

Let x = pounds of $12 per pound coffee

then

20-x = pounds of $9 per pound coffee

.

12x + 9(20-x) = 10(20)

12x + 180 - 9x = 200

3x + 180 = 200

3x = 20

x = 20/3

x = 6 and 2/3 pounds of $12 per pound coffee

.

Amount of $9 per pound coffee:

20-x = 20-20/3 = 60/3 - 20/3 = 40/3

or

13 and 1/3 pounds of $9 per pound coffee

3 0
3 years ago
Dolly's best ski time is 76 seconds this time is 1 1/3 times the best time score by Andrew what is Andrews best ​
RUDIKE [14]

Answer:

answer is here

Step-by-step explanation:

https://www.mathpapa.com/algebra-calculator.html

7 0
3 years ago
Use your knowledge of the angle sum theorem to solve for x and find the missing angle of the triangle:
aev [14]

Answer:

x=20

Step-by-step explanation:

Well we know the right angle is 90 so...

And we also know that all the angle of a triangle add up to 180°.

Knowing this you can subtract 40° and 90°, this gives you 50°...

Then you can substitute 20° for x and then it will be 2(20°)+10°

Simplify and get 40°+10°

This equals 50° degrees

You then add that all up and you get 180°, this mean the answer is correct!

Hope this helps!

All the love, Ya boi Fraser :)

3 0
3 years ago
Read 2 more answers
The graph shows a proportional relationship. which equation matches the graph.
Archy [21]

Answer:

not enough info. I need that graph then I could help

8 0
2 years ago
Read 2 more answers
Other questions:
  • Help me please,Thanks
    12·2 answers
  • Esmerelda is five times as old as Ruth. Four years ago, the sum of their ages was 22 years. How old is each now?
    5·1 answer
  • The mass of 5 m' of copper is 44 800 kg. Work out<br> the density of copper.
    10·1 answer
  • What digit is missing from the quotient?
    13·2 answers
  • What is the answer 2+2=___+5=____
    7·2 answers
  • 1 point
    14·2 answers
  • How does 3.1416 come​
    14·1 answer
  • Last question for Jim Thompson Geometry homework
    11·1 answer
  • Which equation shows the point-slope form of the line that passes through (3, 2) and has a slope of 1/3
    11·2 answers
  • PLEASE HELP I will give 50 points! PLEASE ANSWER CORRECTLY
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!