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, $\begin{vmatrix} 2s & 4 \\ 2 & s \end{vmatrix} \neq 0$

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

6 0

3 years ago

Tahari is shopping for a new car. She is making her decision based on brand, color, and style. She can choose from 4 brands, 5 c

mash [69]

Are there choices? I would say 4x1x3, or 12 options after the color is chosen.

7 0

3 years ago

Read 3 more answers

The length of a rectangle is 5cm less than twice the width. The perimeter is 44cm.

Veronika [31]

Answer:

Width = 9

Length = 13

Step-by-step explanation:

width = w

length = L

w(2) - 5 = L

w + w + L + L = 44

44 + 5 + 5 = 54

54/6 = 9

9(2) = 18 - 5 = 13

w = 9

l = 13

Check:

9 + 9 + 13 + 13 = 44

9(2) = 18 - 5 = 13

5 0

3 years ago

[3]

grandymaker [24]

Answer:

can u help me with this science questions {Mr. Dyers’ daughter is feeling ill. The doctor determines that she has the common cold. What would be the best treatment the doctor could suggest?}

Step-by-step explanation:

3 0

2 years ago