What does M= Y-intercept= Y=

What is the value of t HELP

rusak2 [61]

Answer:

t = 8°

Step-by-step explanation:

We know that the sum of all the angles in a triangle is equal to 180°

Let's set up our equation => 18t + 36 = 180

Subtract 36 from both sides

18t = 144

t = 8

Thus, we have our answer

7 0

2 years ago

42.54 degrees is the same as 42 degrees______ '42"

pav-90 [236]

The answer is 24" hope this helps.

3 0

3 years ago

WILL GIVE BRAINLIEST!!! Given tan(theta) = 4/3 and pi < theta < (3pi)/2, find cos(2theta).

babymother [125]

Answer: $\cos 2 \theta = \dfrac{-7}{25}$

Step-by-step explanation:

Given: $\tan \theta = \dfrac{4}{3}$ and $\pi < \theta< \dfrac{3\pi }{2}$

To find: $\cos 2 \theta$

Now as we know

$\cos 2x = \dfrac{1- \tan ^2 x}{1+ \tan ^2 x}$

So we have

$\cos 2 \theta = \dfrac{1-(\dfrac{4}{3} )^2}{1+(\dfrac{4}{3} )^2} \\\\\Rightarrow \cos 2 \theta = \dfrac{1- \dfrac{16}{9} }{1+ \dfrac{16}{9} } = \dfrac{\dfrac{9-16}{9} }{\dfrac{9+16}{9}} = \dfrac{-7}{25}$

Therefore d. is the correct option

Hence , $\cos 2 \theta = \dfrac{-7}{25}$

3 0

3 years ago

Read 2 more answers

Determine the slope-intercept form of the linear equation. - y 6 = 0 user: determine the slope-intercept form of the linear equa

Iteru [2.4K]

X - y + 6 = 0
slope - intercept form is
y = x + 6

5 0

3 years ago

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

3 years ago