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givi [52]
2 years ago
5

2+2 what is the answer​

Mathematics
2 answers:
JulijaS [17]2 years ago
8 0

Answer:

4

Step-by-step explanation:

just add it up on your fingers

Olin [163]2 years ago
4 0

Answer:

4

Step-by-step explanation:

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I'm not even gonna lie. I've NEVER seen a more desperate thing than the titles of these questions. Like just add "urgent" or som
KonstantinChe [14]

Answer:

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Step-by-step explanation:

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statuscvo [17]

9514 1404 393

Answer:

  (a, b) = (-2, -1)

Step-by-step explanation:

The transpose of the given matrix is ...

  A^T=\left[\begin{array}{ccc}1&2&a\\2&1&2\\2&-2&b\end{array}\right]

Then the [3,1] term of the product is ...

  (A\cdot A^T)_{31}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}1&2&2\end{array}\right]=a+2b+4

and the [3,2] term is ...

  (A\cdot A^T)_{32}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}2&1&-2\end{array}\right]=2a-2b+2

Both of these terms in the product matrix are 0. We can solve the system of equations by adding these two terms:

  (a +2b +4) +(2a -2b +2) = (0) +(0)

  3a +6 = 0

  a = -2

Substituting for 'a' in term [3,1] gives ...

  -2 +2b +4 = 0

  b = -1

The ordered pair (a, b) is (-2, -1).

8 0
3 years ago
PLS HELP. It’s question 18
Gnom [1K]

Answer:

no

Step-by-step explanation:

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Step-by-step explanation:

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What is the length of the longer of the two chords shown? <br>Length of longer chord= ? units
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19 just did this assignment on e2020
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