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Bumek [7]
3 years ago
15

PLEASE ANSWER FAST!!!!!!!!!!

Mathematics
2 answers:
Vika [28.1K]3 years ago
5 0

Answer:

D) 3/4

Step-by-step explanation:

Since it is experimental probability, it is the probability after the experiment is conducted

It was spun 60 times and 45 times was on a multiple of 4

Therefore, 45/60 simplifies to 3/4

yan [13]3 years ago
4 0

Answer:

im gonna say 3/4

Step-by-step explanation:

i think its that because 45/60 is 3/4

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L want to know the sum result.10+67×2=?<br>​
Volgvan

Answer:

144

Step-by-step explanation:

<u>Step 1:  Multiply </u>

10 + (67 * 2)

10 + 134

<u>Step 2:  Combine </u>

10 + 134

144

Answer: 144

3 0
3 years ago
Read 2 more answers
Determine if the columns of the matrix form a linearly independent set. Justify your answer. [Start 3 By 4 Matrix 1st Row 1st Co
Volgvan

Answer:

Linearly Dependent for not all scalars are null.

Step-by-step explanation:

Hi there!

1)When we have vectors like v_{1},v_{2},v_{3}, ... we call them linearly dependent if we have scalars a_{1},a_{2},a_{3},... as scalar coefficients of those vectors, and not all are null and their sum is equal to zero.

a_{1}\vec{v_{1}}+a_{2}\vec{v_{2}}+a_{3}\vec{v_{3}}+...a_{m}\vec{v_{m}}=0  

When all scalar coefficients are equal to zero, we can call them linearly independent

2)  Now let's examine the Matrix given:

\begin{bmatrix}1 &-2  &2  &3 \\ -2 & 4 & -4 &3 \\ 0&1  &-1  & 4\end{bmatrix}

So each column of this Matrix is a vector. So we can write them as:

\vec{v_{1}}=\left \langle 1,-2,1 \right \rangle,\vec{v_{2}}=\left \langle -2,4,-1 \right \rangle,\vec{v_{3}}=\left \langle 2,-4,4 \right \rangle\vec{v_{4}}=\left \langle 3,3,4 \right \rangle Or

Now let's rewrite it as a system of equations:

a_{1}\begin{bmatrix}1\\ -2\\ 0\end{bmatrix}+a_{2}\begin{bmatrix}-2\\ 4\\ 1\end{bmatrix}+a_{3}\begin{bmatrix}2\\ -4\\ -1\end{bmatrix}+a_{4}\begin{bmatrix}3\\ 3\\ 4\end{bmatrix}=\begin{bmatrix}0\\ 0\\ 0\end{bmatrix}

2.1) Since we want to try whether they are linearly independent, or dependent we'll rewrite as a Linear system so that we can find their scalar coefficients, whether all or not all are null.

Using the Gaussian Elimination Method, augmenting the matrix, then proceeding the calculations, we can see that not all scalars are equal to zero. Then it is Linearly Dependent.

 \left ( \left.\begin{matrix}1 &-2  &2  &3 \\ -2 &4  &-4  &3 \\ 0 & 1 &-1  &4 \\ \end{matrix}\right|\begin{matrix}0\\ 0\\ 0\end{matrix} \right )R_{1}\times2 +R_{2}\rightarrow R_{2}\left ( \left.\begin{matrix}1 &-2  &2  &3 \\ 0 &0 &9  &0\\ 0 & 1 &-1  &4 \\ \end{matrix}\right|\begin{matrix}0\\ 0\\ 0\end{matrix} \right )\ R_{2}\Leftrightarrow  R_{3}\left ( \left.\begin{matrix}1 &-2  &2  &3 \\ 0 &1  &-1  &4 \\ 0 &0 &9  &0 \\ \end{matrix}\right|\begin{matrix}0\\ 0\\ 0\end{matrix} \right )\left\{\begin{matrix}1a_{1} &-2a_{2}  &+2a_{3}  &+3a_{4}  &=0 \\  &1a_{2}  &-1a_{3} &+4a_{4}  &=0 \\  &  &  &9a_{4}  &=0 \end{matrix}\right.\Rightarrow a_{1}=0, a_{2}=a_{3},a_{4}=0

S=\begin{bmatrix}0\\ a_{3}\\ a_{3}\\ 0\end{bmatrix}

3 0
3 years ago
8 Heights below sea level can be shown by using negative numbers.
fredd [130]
Answer: 650 Ft above the trough of the valley. Explanation 450 - (-200) = 650
7 0
3 years ago
Which equation can be used to solve for X in the following diagram
Leokris [45]

Answer:

<h2>C. 3x + 80 + 2x = 180</h2>

Step-by-step explanation:

The straight line creates an angle of 180 °.

Therefore from the picture we have the equation:

3x + 80 + 2x = 180        <em>subtract 80 from both sides</em>

5x = 100           <em>divide both sides by 5</em>

x = 20

3 0
3 years ago
Find the percent change from 36 to 63
Tasya [4]

Answer:

57.14% change

Step-by-step explanation:

36 divided by 63

6 0
3 years ago
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