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3 years ago

Which data set has a variation, or mean absolute deviation, similar to the data set in the given dot plot?

Mathematics

1 answer:

disa [49]3 years ago

6 0

I just took a guess and got it right lol

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Determine whether the three points are the vertices of a right triangle.

Jobisdone [24]

Yes I have graphed them and they form a 90 degree angle

5 0

3 years ago

What is the measure of the third angle of a triangle if

dolphi86 [110]

Answer:

105°

Step-by-step explanation:

total angle of triangle equals 180°

so,

25° + 50° + ? = 180°

? = 180° - (25° + 50°)

? = 180° - 75°

? = 105°

So third angle of a triangle is 105°

7 0

3 years ago

Assume that T is a linear transformation. Find the standard matrix of T. T: R^3 right arrow R^2 , T(e 1) =(1,2), and T(e2 ) =( -

irina [24]

Answer:

$A = \left[\begin{array}{ccc}1&-4&2\\2&6&-6\end{array}\right]$

Step-by-step explanation:

Given

$T:R^3->R^2$

$T(e_1) = (1,2)$

$T(e_2) = (-4,6)$

$T(e_3) = (2,-6)$

Required

Find the standard matrix

The standard matrix (A) is given by

$Ax = T(x)$

Where

$T(x) = [T(e_1)\ T(e_2)\ T(e_3)]\left[\begin{array}{c}x_1&x_2&x_3\\-&&x_n\end{array}\right]$

$Ax = T(x)$ becomes

$Ax = [T(e_1)\ T(e_2)\ T(e_3)]\left[\begin{array}{c}x_1&x_2&x_3\\-&&x_n\end{array}\right]$

The x on both sides cancel out; and, we're left with:

$A = [T(e_1)\ T(e_2)\ T(e_3)]$

Recall that:

$T(e_1) = (1,2)$

$T(e_2) = (-4,6)$

$T(e_3) = (2,-6)$

In matrix:

$(a,b)$ is represented as: $\left[\begin{array}{c}a\\b\end{array}\right]$

So:

$T(e_1) = (1,2) = \left[\begin{array}{c}1\\2\end{array}\right]$

$T(e_2) = (-4,6)=\left[\begin{array}{c}-4\\6\end{array}\right]$

$T(e_3) = (2,-6)=\left[\begin{array}{c}2\\-6\end{array}\right]$

Substitute the above expressions in $A = [T(e_1)\ T(e_2)\ T(e_3)]$

$A = \left[\begin{array}{ccc}1&-4&2\\2&6&-6\end{array}\right]$

Hence, the standard of the matrix A is:

$A = \left[\begin{array}{ccc}1&-4&2\\2&6&-6\end{array}\right]$

6 0

3 years ago

Please help it's for my homework, It's easy I'm just dum...

rusak2 [61]

First, since it's given the angle PRS=98 degrees we can find x.

(3x-8)+(2x+6)=98 we can solve for x

after solving this we find that

x=20

Now we can solve for angle QRS

2x+6 plug in our values and we get

40+6, which equals 46 degrees

4 0

3 years ago

Movie tickets for 2 adults and 3 children cost $44.50. Tickets for the same movie cost $23.50 for 1 adult and 2 children. How mu

schepotkina [342]

I think it is 45.75. I am sorry if it is wrong.

4 0

3 years ago

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