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Mathematics

1 answer:

notka56 [123]3 years ago

6 0

Answer:

21/35

Step-by-step explanation:

Given :

A right angled triangle with sides 28 , 35 ,21 .

And we need to find the value of cos A. We know that cosine is the ratio of base and Hypotenuse. So that ,

$:\implies$ cos A = b/h

$:\implies$ cosA = 21/35

$:\implies$ Hence the required Answer is 21/35.

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Find the Prime Factorization of -165

Ghella [55]

Answer:

(-1)(11)(3)(5)

Step-by-step explanation:

First off: -165 separates into the factors (-1) and (165). Next, we divide 165 by 15, obtaining 15(11).

So far, we have (-1)(11)(15).

15 is still factorable. We get:

(-1)(11)(3)(5), which is the desired prime factorization of -165.

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a machine can produce 6 yards of fabric in 2 minutes how much fabric can the machine produce in 2 hours?

Mariulka [41]

Answer:

360 yards in 2 hours

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3 years ago

What eigen value for this matix (1 -2) (-2 0)

natali 33 [55]

You find the eigenvalues of a matrix A by following these steps:

Compute the matrix $A' = A-\lambda I$ , where I is the identity matrix (1s on the diagonal, 0s elsewhere)
Compute the determinant of A'
Set the determinant of A' equal to zero and solve for lambda.

So, in this case, we have

$A = \left[\begin{array}{cc}1&-2\\-2&0\end{array}\right] \implies A'=\left[\begin{array}{cc}1&-2\\-2&0\end{array}\right]-\left[\begin{array}{cc}\lambda&0\\0&\lambda\end{array}\right]=\left[\begin{array}{cc}1-\lambda&-2\\-2&-\lambda\end{array}\right]$