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WITCHER [35]
3 years ago
12

What is the correct solution of 4 - 2x = -2 +4 +4 2x = 2 2 2 x = 6

Mathematics
1 answer:
zepelin [54]3 years ago
4 0
The answer is x=3
Lol
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What does it mean if two different ratios describe the same situation
Sav [38]
I wasn't taught this specifically, but I would think that it would mean two ratios are involved with the same problem, just like it says.
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4 years ago
Identify all the two-dimensional figures that are cross-sections for each of the three-dimensional solids.
LekaFEV [45]

Answer:

i. hexagon

ii. triangle

iii. octagon

iv. square

v. pentagon

vi. rectangle

Step-by-step explanation:

A two-dimensional figure is a flat figure that is described by its length of sides only. It can be obtained from a three dimensional solid when sliced or truncated.

Truncation is the process of cutting a solid with respect to a given plain. Therefore, when a three dimensional solid is truncated, the face forms a two dimensional figure. An example is when a cube is truncated horizontally, a square can be obtained at the surface.

3 0
4 years ago
Explain why the formula is not valid for matrices. Illustrate your argument with examples. (A + B)(A − B) = A2 − B2 The formula
julsineya [31]

Answer:

The formula is not valid because the commutative property with respect to the matrix product operation is not fulfilled in the vector space of the real matrices.

Step-by-step explanation:

The formula is not valid because the commutative property with respect to the matrix product operation is not fulfilled in the vector space of the real matrices. That is, AB does not necessarily equal BA.

(A+B)(A-B) = A^2-AB+BA-B^2\neq A^2 - B^2

A=\left[\begin{array}{ccc}1&0&0\\0&0&6\\0&8&0\end{array}\right] \\B=\left[\begin{array}{ccc}0&2&0\\6&0&0\\0&0&9\end{array}\right] \\(A -B) = \left[\begin{array}{ccc}1&-2&0\\-6&0&6\\0&8&-9\end{array}\right]\\\\(A + B) = \left[\begin{array}{ccc}1&2&0\\6&0&6\\0&8&9\end{array}\right]\\(A - B)(A + B) = \left[\begin{array}{ccc}-11&2&-12\\-6&36&54\\48&-72&-33\end{array}\right]\\A^2 - B^2 = \left[\begin{array}{ccc}-11&0&0\\0&36&0\\0&0&-33\end{array}\right]\\

7 0
3 years ago
Identify the slope in the equation C(m)=40+2m
Pavel [41]

Answer:

Tres (Three)

Step-by-step explanation:

3 0
3 years ago
Solve.<br> 12-(2x3)<br> A. 6<br> B. 12<br> C. 12(2)<br> D. 2 3
Sergio [31]
The answer would be A) 6.
7 0
3 years ago
Read 2 more answers
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