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andreyandreev [35.5K]
3 years ago
5

What is this 1=-t-5?

Mathematics
2 answers:
JulijaS [17]3 years ago
6 0

Answer:

t=-6

Step-by-step explanation:

1=-t-5

1+5==-t-5+5

6=-t

t=-6

Semenov [28]3 years ago
4 0

Answer:

t = -6

Step-by-step explanation:

1 = -t - 5

-t = 1 + 5

-t = 6

t = -6

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X + y + w = b
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Answer:

(a) a=6 and b≠\frac{11}{4}

(b)a≠6

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Step-by-step explanation:

writing equation in agumented matrix form

\begin{bmatrix}1 &1 & 0 &1 &b\\ 2 &3 & 1 &5 &6\\ 0& 0 & 1 &1 &4\\ 0& 2 & 2&a &1\end{bmatrix}

now R_{2} =R_{2}-2\times R_{1}

\begin{bmatrix}1 &1& 0 &1 &b\\ 0 &1& 1 &3 &6-2b\\ 0& 0 & 1 &1 &4\\ 0& 2 & 2&a &1\end{bmatrix}

now R_{4} =R_{4}-2\times R_{2}

\begin{bmatrix}1 &1& 0 &1 &b\\ 0 &1& 1 &3 &6-2b\\ 0& 0 & 1 &1 &4\\ 0& 0 & 0 &a-6 &4b-11\end{bmatrix}

a) now for inconsistent

rank of augamented matrix ≠ rank of matrix

for that  a=6 and b≠\frac{11}{4}

b) for consistent w/ a unique solution

rank of augamented matrix = rank of matrix

  a≠6

c) consistent w/ infinitely-many sol'ns

  rank of augamented matrix = rank of matrix < no. of variable

for that condition

 a=6 and b=[tex]\frac{11}{4}

then rank become 3 which is less than variable which is 4.

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4 years ago
Which number has a 3 with a value that is 100 times greater than the value of the 3 in 20.342?
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36.25 ..................................................................
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