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stellarik [79]
3 years ago
15

Can someone give me some 4th grade math problems​

Mathematics
2 answers:
stich3 [128]3 years ago
8 0
1. What is 32×25?

2. What is 856×4?

3. What is 567×40?

Show your work. Sorry if these are too hard.
Leni [432]3 years ago
3 0

33×12=

45×23=

18÷_=9

14÷_=2

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Answer:

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Step-by-step explanation:

<u>Eigenvalues of a Matrix</u>

Given a matrix A, the eigenvalues of A, called \lambda are scalars who comply with the relation:

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Where I is the identity matrix

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The matrix is given as

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Set up the equation to solve

det\left(\left[\begin{array}{cc}3&5\\8&0\end{array}\right]-\left[\begin{array}{cc}\lambda&0\\0&\lambda \end{array}\right]\right)=0

Expanding the determinant

det\left(\left[\begin{array}{cc}3-\lambda&5\\8&-\lambda\end{array}\right]\right)=0

(3-\lambda)(-\lambda)-40=0

Operating Rearranging

\lambda^2-3\lambda-40=0

Factoring

(\lambda-8)(\lambda+5)=0

Solving, we have the eigenvalues

\boxed{\lambda=8,\ \lambda=-5}

8 0
3 years ago
Are standardized scores and z-scores the same thing?.
tatyana61 [14]

Answer:

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