Ask question

Ask question

All categories

3 years ago

15

Twelve students tried out for the cheerleading squad. Three students were selected. What is the ratio of students selected to th

ose trying out?
A.
1:4
B.
3:1
C.
1:3
D.
4:1

2 answers:

dmitriy555 [2]3 years ago

4 0

Answer:

1:4 I'm not sure though

zimovet [89]3 years ago

4 0

Answer:14

Step-by-step explanation:

You might be interested in

Can you tell me how to calculate R for below Matrix ?

scoray [572]

Answer:

The rank of the matrix is 3.

Step-by-step explanation:

Consider the prided information.

$x=\begin{bmatrix}x_1\\ x_2\\ x_3\end{bmatrix}=\begin{bmatrix}9&2&6&5&8\\ 12&8&6&4&10\\ 3&4&0&2&1\end{bmatrix}$

Reduce the matrix in row echelon form as shown:

$R_1\:\leftrightarrow \:R_2\begin{bmatrix}12&8&6&4&10\\ 9&2&6&5&8\\ 3&4&0&2&1\end{bmatrix}\\$

$R_2\:\leftarrow \:R_2-\frac{3}{4}\cdot \:R_1\ and\ R_3\:\leftarrow \:R_3-\frac{1}{4}\cdot \:R_1\\\\\begin{bmatrix}12&8&6&4&10\\ 0&-4&\frac{3}{2}&2&\frac{1}{2}\\ 0&2&-\frac{3}{2}&1&-\frac{3}{2}\end{bmatrix}$

$R_3\:\leftarrow \:R_3+\frac{1}{2}\cdot \:R_2\\\begin{bmatrix}12&8&6&4&10\\ 0&-4&\frac{3}{2}&2&\frac{1}{2}\\ 0&0&-\frac{3}{4}&2&-\frac{5}{4}\end{bmatrix}$

$R_2\:\leftarrow \:R_2-\frac{3}{2}\cdot \:R_3\ and\ R_1\:\leftarrow \:R_1-6\cdot \:R_3\\\begin{bmatrix}12&8&0&20&0\\ 0&-4&0&6&-2\\ 0&0&1&-\frac{8}{3}&\frac{5}{3}\end{bmatrix}\\R_2\:\leftarrow \:-\frac{1}{4}\cdot \:R_2\ , \ R_1\:\leftarrow \:R_1-8\cdot \:R_2\ and\ \:R_1\:\leftarrow \frac{1}{12}\cdot \:R_1\\\begin{bmatrix}1&0&0&\frac{8}{3}&-\frac{1}{3}\\ 0&1&0&-\frac{3}{2}&\frac{1}{2}\\ 0&0&1&-\frac{8}{3}&\frac{5}{3}\end{bmatrix}$

The rank of a matrix is the number of non zeros rows.

Thus, the rank of the matrix is 3.

6 0

3 years ago

10 quarts or 38 cups?

sammy [17]

10 quarts is greater if that is what you were asking for.

6 0

4 years ago

Read 2 more answers

What is the measure of

zubka84 [21]

Answer:

of what?

Step-by-step explanation:

4 0

3 years ago

What is 876 ÷ by 21 ?

Morgarella [4.7K]

Answer:41.714

Step-by-step explanation:876 divided by 21 is 41.714

6 0

4 years ago

What will be the shape of the model for 10000

Novosadov [1.4K]

Rectangle because it is more than a square. A square is 1,000 and more than a square is a rectangle.

4 0

4 years ago