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tiny-mole [99]
3 years ago
8

PLEASE HELP!!!!!!

Mathematics
1 answer:
pickupchik [31]3 years ago
4 0

9514 1404 393

Answer:

  \left[\begin{array}{ccc}-1&-1&3\\1&-2&-2\end{array}\right]

Step-by-step explanation:

The 270° CCW rotation is described by the transformation ...

  (x, y) ⇒ (y, -x)

That is, the first row of the transformed coordinate matrix is the same as the second row of the input matrix. The second row of the output matrix is the opposite of the first row of the input matrix.

  \left[\begin{array}{ccc}-1&-1&3\\1&-2&-2\end{array}\right]

You might be interested in
Find the area of a square if its side length is: 3 inches
Leviafan [203]

Answer:

9 inches^2

Step-by-step explanation:

Since a square has the same side lenghts the formula is

A=s*s

A=3*3

A=9

6 0
3 years ago
Please help quickly! Thanks! <3
tester [92]
Well DAC is 180* so 180-70=110. DAB=110*.

To check 110+70=180* (aka : BAC+DAB=DAC)

Hoped I helped!
6 0
3 years ago
In ABC, b = 68 inches, B=65° and C=93º. Find the length of a, to the nearest<br> inches
sp2606 [1]

Answer:

28inches

Step-by-step explanation:

∠A + ∠B + ∠C = 180°

∠A + 65° +93° = 180°

∠A + 158° = 180°

∠A= 180°-158° = 22°

Using Law of Sines

a/sinA= b/sinB

a/sin22= 68 inches/sin65

a/sin22 = 68/0.9063 = 75.03

a = 75.03 x sin 22

a = 75.03 x 0.3746 = 28.106238≈28 inches

3 0
2 years ago
I need help solving this because I don't know how to solve this
Contact [7]
The answer would be 10. You would get it by multiplying 50 by 0.2. Hope I helped!
5 0
3 years ago
A circular table has a circumfrence of 18.84. What is the approximate area to the nearest square yard?
maria [59]
C=2 \pi r so
18.84=2*3.14r
18.84=6.28r
r=3

A= \pi  r^{2}
A=3.14*9
A=28.26 or when rounded is 28

Hope that helps
6 0
3 years ago
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