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Kazeer [188]
3 years ago
6

Please help out with this answer

Mathematics
1 answer:
Lelu [443]3 years ago
3 0

Answer:

see below

Step-by-step explanation:

Hi!

\frac{1}{21-20} \left[\begin{array}{ccc}-3&10&\\2&-7&\end{array}\right]

(Determinant is 1 in this case)

Hence the inverse is:

\left[\begin{array}{ccc}-3&10\\2&-7&\\\end{array}\right]

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Q. 1 Find the value of |-8| + 4(-5 + 9) ÷ 2.
skad [1K]
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3 0
4 years ago
I don't really understand this, could anyone possibly help me?
Tanya [424]

\bf Step-by-step~explanation:\\

\bf13.

We have to name a line that "contains" point P. This means that we have to find a line that passes through point P. We can see that line PS/n goes through point P.

\bf14.

We have to find the plane's name. The name (usually a letter) is usually on a corner of the plane, in caps. We could see that there is an F on the bottom left hand corner of the plane, so F is our plane name.

\bf 15.

To name an intersection of lines n and m, we have to find the point where they intersect and name it. We could see that point R goes through both lines, so that is our answer.

\bf 16.

We have to name a point that does not contain lines l, m, or n. Point W is a point that is not on any of the lines.

\bf 17.

Another name for line n is also line PS (add a line on the top of PS when writing this!) because point P and point S are two points on line n.

\bf 18.

Line l does not intersect lines n or m because those lines do not go through line l at all.

\large\boxed{\bf Our ~final~answers:~In~bold}

8 0
3 years ago
Helllllpppppppppp idk what it issssss
yulyashka [42]
I think it’s either a or c
8 0
3 years ago
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