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
MAXImum [283]
3 years ago
7

Determine the values of the parameter s for which the system has a unique​ solution, and describe the solution. sx 1 minus 2 sx

2sx1−2sx2 equals= 3 3 x 1 minus 6 sx 23x1−6sx2 equals= 5
Mathematics
1 answer:
JulijaS [17]3 years ago
6 0

Note: The equations written in this questions are not appropriately expressed, however, i will work with hypothetical equations that will enable you to solve any problems of this kind.

Answer:

For the system of equations to be unique, s can take all values except 2 and -2

Step-by-step explanation:

2sx_{1} + 4x_{2} = -3\\2x_{1} + sx_{2} = 4

\left[\begin{array}{ccc}2s&4\\2&s\end{array}\right] \left[\begin{array}{ccc}x_{1} \\x_{2} \end{array}\right] = \left[\begin{array}{ccc}-3 \\6 \end{array}\right]

For the system to have a unique solution, \begin{vmatrix} 2s & 4 \\ 2 & s \end{vmatrix} \neq 0

2s^{2} -8 \neq 0\\2s^{2}\neq 8\\s^{2}\neq 4\\s \neq 2 or -2

You might be interested in
30 Points!!
neonofarm [45]

Answer:

  multiply the left side of the constant vector by the inverse matrix

Step-by-step explanation:

The matrix equation ...

  AX = B

is solved by left-multiplying by the inverse of A:

  A⁻¹AX = A⁻¹B

  IX = A⁻¹B . . . . . the result of multiplying A⁻¹A is the identity matrix

  X = A⁻¹B . . . . . B needs to be multiplied by the inverse matrix

\left[\begin{array}{c}x&y\end{array}\right] = \left[\begin{array}{cc}-4&1\\3&2\end{array}\right]^{-1}\left[\begin{array}{c}9&7\end{array}\right]=\dfrac{1}{11}\left[\begin{array}{cc}-2&1\\3&4\end{array}\right]\left[\begin{array}{c}9&7\end{array}\right]=\left[\begin{array}{c}-1&5\end{array}\right]

4 0
3 years ago
What is the value of y:35x+120y=500
Vladimir79 [104]
To get y you can move the x's to one side, so 120y=500-35x
then you can isolate the y, y= 500/120-35x/120

:)
8 0
3 years ago
The more experiments that are performed, the closer the experimental probability gets to the theoretical probability: true or fa
rjkz [21]

Answer:

True.

Explanation:

The more experiments that are performed, the more data can be collected.

4 0
2 years ago
a box of cookies contain 12 chocolate chip cookies, 6 peanut butter cookies, and 6 sugar cookies, what is the probability of sel
tatuchka [14]
24 cookies in total, probability of selecting sugar is 6/24 = 1/4 = 25%
7 0
3 years ago
Read 2 more answers
A triangle has vertices at R(1, 1), S(-2,-4), and T-3, -3). The triangle is transformed according to the rule Ro, 270 What the c
notsponge [240]

Answer:

Based on the situation above and the choices provided the he coordinates of S should be (2,4) while the coordinates of R is (-1, 1), and for the T it should be (–3, 3). I hope the answer will help.

3 0
3 years ago
Other questions:
  • 5x+3+2y+x in expression
    15·1 answer
  • Find the area. and explain step by step please.​
    14·1 answer
  • What is bigger 1/5 or 4/15
    11·2 answers
  • 1.Simplify.<br><br> 2.Simplify.<br> 3.Which statement best reflects the solution(s) of the equation?
    13·1 answer
  • Solve this pls!!! I need to turn it into <br>-3<br>_____<br>(x+2)(x-5)​
    10·1 answer
  • (Q10) It's a long question so I will give you 30 points for answering it. Thank You!
    11·1 answer
  • The skateboard that Larry wants to purchase normally sells for $84. During a sale, he can receive a 15% discount on the skateboa
    8·1 answer
  • If f(x) = -x + 8 and g(x) = 3x + 6, find (f o g) (3)
    6·1 answer
  • A nurse practitioner is studying the effects of sugary drinks on weight gain. To begin the study, the nurse practitioner asks a
    9·1 answer
  • Determine the value for which the rational expression 5x/6x
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!