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
Marrrta [24]
3 years ago
7

What is the solution of the quadratic system of equations? give brainliest and extra points!!

Mathematics
2 answers:
ololo11 [35]3 years ago
4 0

Try this solution:

The correct answer is 'a' only, where x= -4;-1 and y= -6;-21

kiruha [24]3 years ago
3 0

(- 1, - 6 ) from the list

Since both equations express y in terms of x, equate the right sides

x² + 10x + 3 = - x² - 5 ( add x² - 5 to both sides )

2x² + 10x + 8 = 0 ( divide all terms by 2 )

x² + 5x + 4 = 0

(x + 1 )(x + 4 ) = 0

equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

x + 4 = 0 ⇒ x = - 4

substitute these values into either of the 2 equations for y

x = - 1 : y = 1 - 10 + 3 = - 6 ( using y = x² + 10x + 3 )

x = - 4 : y = 16 - 40 + 3 = - 21

solutions are (- 1, - 6 ) or (- 4, - 21 )


You might be interested in
what is the image of the point ( -4, 8) after a rotation of 90° counterclockwise about the origin ​
lesya [120]

Answer:(-8,-4)

Step-by-step explanation:

5 0
3 years ago
A motorcycle is traveling at a constant speed of 75miles per hour. How many feet does it travel in 7seconds? Remember that 1 mil
Stella [2.4K]

770 feets per 7 seconds


5 0
3 years ago
The mean of 9 observations was found to be 35. Later on, it was
USPshnik [31]

Answer:

its 42

Step-by-step explanation:

315-18+81=378

Correct mean =378/9=42

3 0
3 years ago
The sides of two cubes are in the ratio 2:1. What is the ratio of their volumes ?
olasank [31]

Please mark as brainliest

Answer:

we know that, Volume of cube=a³

Let volume of 1st cube be 2x with side a and other be x with side A (according to given ratio)

Step-by-step explanation:

ATQ: 2x=a³ and, x=A³

a=³√2x and, A=x

we know that, surface area of cube is 6a²

Thus, surface area of 1st cube = 6(³√2x)²

= 6³√4x²

Surface area of 2nd cube=6(x)²=6x²

Ratio of S.A=(6³√4x²)÷(6x²)

Ratio of S.A=³√4:1

<em><u>Please mark as brainliest</u></em>

Have a great day, be safe and healthy

Thank u  

XD

5 0
3 years ago
Can yah help me with those two question please<br> :(
Maurinko [17]

<em><u>Solution</u></em><em><u> </u></em><em><u>1</u></em><em><u> </u></em><em><u>:</u></em><em><u>-</u></em><em><u> </u></em>

Statement : corresponding angles in similar triangles must be congruent .

Answer : True

<em><u>Solution</u></em><em><u> </u></em><em><u>2</u></em><em><u> </u></em><em><u>:</u></em><em><u>-</u></em><em><u> </u></em>

Statement : The hypotenuse of a right angle triangle has to be opposite of 90 degree .

Answer : True

Reason : We know that the side opposite to largest angle in a triangle is largest . Since in a right angle triangle 90 degree is the largest angle and hypotenuse is the longest side therefore they must be opposite to each other .

7 0
3 years ago
Other questions:
  • Andre is setting up rectangle tables for a party. He can fit 6 chairs around a single table. Andre lined up 10 tables end to end
    9·1 answer
  • (01.01 LC)Which two temperatures have a sum of 0 degrees Celsius?
    6·2 answers
  • Sandy is working with a carpenter to frame a house
    15·1 answer
  • A speed limit of 100 kilometers per hour is approximately equal to 62 miles per hour.
    9·1 answer
  • If all the dimensions of a triangle are doubled,the area of the triangle will be doubled,too
    12·2 answers
  • A ratio that is equivalent to 60:125
    14·1 answer
  • Describe the transformation required to obtain the graph of the given function from the basic trigonometric graph.
    12·1 answer
  • What is the area of the triangle.​
    13·2 answers
  • Please help me with this! &lt;3
    12·1 answer
  • Tre has to pay $180 to book the recording studio plus $30 per hour of recording time. The function c(h)=30h+180 relates the tota
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!