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
Ad libitum [116K]
3 years ago
9

Question 4

Mathematics
1 answer:
astraxan [27]3 years ago
6 0

Answer:

No real roots

Step-by-step explanation:

The given equations are:

3x-1+2y=0

3x^2-y^2+4=0

We make y the subject in the first equation to get

y=\frac{1-3x}{2}

We substitute into the second expression to get:

3x^2-(\frac{1-3x}{2})^2+4=0

We expand to get:

3x^2-\frac{(1-6x+9x^2)}{4}+4=0

Multiply through by 4 to get:

12x^2-1+6x-9x^2+16=0

3x^2+6x+15=0

The discriminant is given by D=b^2-4ac

D=3^2-4*12*15

D=-711

Since the discriminant is less than zero, the two curves never intersects.

Therefore the system has no real roots

You might be interested in
A salesman makes both a base salary and also a commission, which is a percentage of what he sells. Each month, if his sales tota
ss7ja [257]

Linear equation is the equation in which the highest power of the unknown variable is one.

The given equation the constant 2000 represents the base salary or the fixed salary of the salesman.

To find that what does 2000 represent in the given linear equation we need to know about the linear equation.

<h3>What is linear equation?</h3>

Linear equation is the equation in which the highest power of the unknown variable is one.

Given information-

Total sales by salesman each month is s dollars.

The total money made by the salesman each month by selling goods of s dollars given by,

S=2000+0.1s

The above equation given in the problem is the linear equation. In this linear equation the salary of salesman depends on his sales.

The constant amount of $2000 is the fixed amount of the salesman.

The variable s is the variable on which the salary of the salesman depends. Thus due to this variable the salary of the salesman changes.

Hence in the given equation the constant 2000 represents the base salary or the fixed salary of the salesman.

Learn more about the linear equation.

brainly.com/question/14323743

4 0
2 years ago
Help please if it was u u would want the same so please help
antiseptic1488 [7]
Simple...

you have: 8x-6y=1

You're trying to find m-->>using y=mx+b to re-write the line....

8x-6y=1

8x-6y=1
-8x      -8x

-6y=-8x+1

\frac{-6y}{-6} = \frac{-8x+1}{-6}

y=\frac{4}{3} x- \frac{1}{6}

Your slope m=\frac{4}{3} x

Thus, your answer.

3 0
3 years ago
Liz train for rock climbing 4 days a week
Goshia [24]
7 times 4 =28 this is cuz there is seven days in a week and 7x4
7 0
2 years ago
Helllllllpppppppp Plllleeeeaaase I have a test!!!!
Tresset [83]
Do you still need it
3 0
3 years ago
Find the angles in this quadilateral
ch4aika [34]

Answer:

Therefore a= 90°,b=54°, x=54°, y= 162°

Step-by-step explanation:

a=90°

a:b=5:3

5+3= 8

5/8 x A = 90

A is the sum of the angles of a and b divided in the ratio 5:3

5A/8 = 90

cross multiply

5A= 90 X8 = 720

5A=720

A= 720/5= 144°

b= 3/8 x 144 = 3x144/8 = 432/8 = 54

a= 90

b= 54

x:y is in the ratio of 1:3

the Sum of angles in a Quadrilateral is 360°

if the sum of a and b is 144°

then the reamining angles is 360-144= 216°

then x:y=1:3

1+3=4

x= 1/4 x 216= 54°

y= 3/4 x 216= 162°

Therefore a= 90°,b=54°, x=54°, y= 162°

we can see that b = x = 54°

7 0
3 years ago
Other questions:
  • A group of friends ordered two pizzas, one with pepperoni and one with mushrooms and green peppers. A plain pizza costs 9 dollar
    5·1 answer
  • Solve with algebra:<br><img src="https://tex.z-dn.net/?f=2%5Ex%20-%202%5E%7B-x%7D%20%3D%2012" id="TexFormula1" title="2^x - 2^{-
    14·1 answer
  • Adding subtracting and multiply polynomials
    6·1 answer
  • How do I answer this question
    13·2 answers
  • Its not A i just took the test on edg and it was wrong.
    6·1 answer
  • 65 POINTS PLS help
    10·2 answers
  • What is the first error Holden made in his proof?
    7·2 answers
  • plz I'm timed this is the end of my school year plz answer correctly Which is equal to 22%? A. 22 B. 22 10 22 100 D. 22 1000 E,
    12·2 answers
  • A pattern shows 7213, a, 8174, 8665, 9163, b, c, 10699. Use this information to answer questions 2, 3, and 4. 2. What is the val
    6·1 answer
  • The graph of the function C(x) = −0.74x2 + 22x + 75 is shown. The function models the production cost, C, in thousands of dollar
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!