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Gnom [1K]
3 years ago
5

A basic variable in a linear system is a variable that corresponds to a pivot column in the coefficient matrix.Is this statement

true or​ false?
Mathematics
1 answer:
Naya [18.7K]3 years ago
3 0

Answer:

The given statement is true.

Step-by-step explanation:

A basic variable in a linear system is a variable that corresponds to a pivot column in the coefficient matrix.

The statement is true.

This statement is the definition of a basic variable.

We can also say that a basic variables are 'n' variables that can take any value other than zero.

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Which events are mutually exclusive?
Rama09 [41]

Answer:

2.option is the correct answer

4 0
3 years ago
3m + 4m = 42<br><br> Please help.<br><br> I think the answer is either 7 or -42
Katyanochek1 [597]
7m=42 thus m=6
Because 42/7=6
7 0
4 years ago
Read 2 more answers
Use the given information to determine the exact trigonometric value.
pashok25 [27]

Answer:   \bold{a.\quad -\dfrac{2\sqrt{6}}{5}}

<u>Step-by-step explanation:</u>

sin\theta=\dfrac{y}{h}\implies y=-1, h=5\\\\\\\text{Use Pythagorean Theorem to find x:}\\x^2 + y^2 = h^2\\x^2 + (-1)^2=5^2\\x^2+1=25\\x^2=24\\x=\sqrt{24}\\x=2\sqrt{6}

\text{Since }\theta\text{ is between }\pi\text{ and }\dfrac{3\pi}{2} \text{ (Quadrant III)},\text{ then x and y are negative.}\\\implies x=-2\sqrt{6}\\\\\\cos\theta = \dfrac{x}{h}\quad =\boxed{-\dfrac{2\sqrt{6}}{5}}

5 0
3 years ago
Please leave explanation thank you also brainliest
Contact [7]

Answer:

x=-2

Step-by-step explanation:

1. Convert base

(1/64) to (4^-3)

2.Apply exponent rule

4^-3(2x+10)

3. 4x-10=-3(2x+10)

4.Expand

4x-10=-6x-30

4x-10+10=-6x-30+10 (add 10 to both sides)

4x=-6x-20 (simplify)

4x+6x=-6x-20+6x (add 6 to both sides)

5. 10x=-20 (divide both side by 10)

6. Then you get x= -2.

7 0
3 years ago
Tell whether the angles<br> are adjacent or vertical. Then find the value of \(xl).2
True [87]

Answer:

Vertical angles

x=25

Step-by-step explanation:

Adjacent angles are angles that are next to each other. Vertical angles are angles that are opposite each other.

In this problem, the angles are opposite each other. Therefore, they are <u>vertical</u> <u>angles.</u>

Since they are vertical angles, they are congruent, or equal. So, we can set them equal to each other and solve for x.

75=4x-25

To solve for x, we have to isolate x. First, move all the constants to the same side, by adding 25 to both sides.

75+25=4x-25+25

75+25=4x

100=4x

Now, 4 and x are being multiplied. To undo this, divide both sides by 4.

100/4=4x/4

100/4=x

25=x

The angles are vertical and x=25

8 0
3 years ago
Read 2 more answers
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