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3 years ago

7

Find the pattern. What numbers come next?

1 answer:

KonstantinChe [14]3 years ago

5 0

Answer is going by -6, so C

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I need help someone please

Ilya [14]

Answer:look up on google

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Determine whether the following are subspaces of R2×2 : (a) Thesetofall2×2diagonalmatrices (b) The set of all 2 × 2 triangular m

Mrrafil [7]

A vector space $V$ is a subspace of a vector space $W$ if

$V$ is non-empty,
for any two vectors $v_1,v_2\inV$ we have $v_1+v_2\in V$ , and
for any scalar $k$ and $v\in V$ we have $kv\in V$ .

It's easy to show the first condition is met by all the sets in parts (a-g).

(a) is a subspace of $\Bbb R^{2\times2}$ because adding any 2x2 diagonal matrices together, or multiplying one by some scalar, gives another diagonal matrix.

(b) and (c) are also subspaces for the same reasons.

(d) is not a subspace because $\Bbb R^{2\times2}$ because this set of matrices does not contain the zero matrix.

(e), however, is a subspace. Any linear combination of matrices in this set always yields a matrix with 0 in row 1, column 1 entry.

(f) is a subspace. A symmetric matrix is one of the form

$\begin{bmatrix}a&b\\b&c\end{bmatrix}$

Adding two symmetric matrices gives another symmetric matrix:

$\begin{bmatrix}a_1&b_1\\b_1&c_1\end{bmatrix}+\begin{bmatrix}a_2&b_2\\b_2&c_2\end{bmatrix}=\begin{bmatrix}a_1+a_2&b_1+b_2\\b_1+b_2&c_1+c_2\end{bmatrix}$

(g) is not a subspace. Consider the matrices

$\begin{bmatrix}1&0\\0&0\end{bmatrix},\begin{bmatrix}0&0\\0&1\end{bmatrix}$

Both matrices have determinant 0, but their sum is the identity matrix with determinant 1.

4 0

4 years ago

In the circle below, f is the center, gi is the diameter and m

AlladinOne [14]

Answer:

Part a) $m$

Part b) IHG is a semicircle and GJI is a semicircle

Part c) HIJ is a major arc and HIJG is a major arc

Part d) $arc\ GH=80\°$

Part e) $arc\ GJI=180\°$

Step-by-step explanation:

Part a) Give an inscribed angle

we know that

The inscribed angle measures half that of the arc comprising

so

in this problem m<HIG is an inscribed angle

$m$

$arc\ HG=80\°$ ----> by central angle

substitute

$m$

Part b) Give a semicircle

we know that

The diameter divide the circle into two semicircles

so

GI is a diameter

therefore

IHG is a semicircle

GJI is a semicircle

Part c) Give a major arc

we know that

The measure of a major arc is greater than 180 degrees

therefore

HIJ is a major arc

HIJG is a major arc

Part d) Measure of arc GH

we know that

$arc\ GH=m$ ----> by central angle

so

$arc\ GH=80\°$

Part e) Measure of arc GJI

we know that

$arc\ GJI=180\°$ ----> the arc represent a semicircle

8 0

3 years ago

How do you do number 16?

MA_775_DIABLO [31]

The answer to this would be 1/5.
hope this helps

7 0

3 years ago

Find the length of AB given that DB is a median of the triangle AC is 46

slava [35]

ANSWER:

The value of AB is 23

STEP-BY-STEP EXPLANATION:

We know that AB is part of AC, and that DB cuts into two equal parts (half) since it is a median, therefore the value of AB would be

$\begin{gathered} AB=\frac{AC}{2} \\ AB=\frac{46}{2} \\ AB=23 \end{gathered}$

6 0

1 year ago