Will mark brainliest for fastest answer and right

Mathematics

2 answers:

Leni [432]3 years ago

7 0

I believe it’s 19 it’s hard to tell, if you want to check draw a line atop of the rectangles and trace over to the number of students

Nadya [2.5K]3 years ago

3 0

Answer:

Step-by-step explanation:

10 + 9 = 19. If you look at how many students are above the "30 mark", you will count 10 on the first bar and 9 on the second.

You might be interested in

Could a set of three vectors in ℝ^4 span all ℝ^4? Explain. What about n vectors in ℝ^m when n is less than m?

Elena-2011 [213]

Answer:

Check the ecplanation

Step-by-step explanation:

A set of three vectors in $R^{4}$ represents a matrix of 3 column vectors, and each vector containing 4 entries (that is, a matrix of 4 rows, and 3 columns).

Let A be that 4x 3 matrix. The columns of A span $R^{m}$ . if and only if A has a pivot position in each row. So, there are at most 3 pivot positions in the matrix A, but the number of rows is 4, therefore, there exist at least one row not having a pivot position. If A does not have a pivot position in at least one row, then the columns of A do not span $R^{4}$ . It implies that the set of 3 vectors of A does not span all of $R^{4}$ .

In general, the set of n vectors in $R^{m}$ represents a matrix of in rows, and n columns (an in x matrix). So, there are at most n pivot positions in the matrix A, but n is less than the number of rows. In therefore, there exist at least one row that does not contain a pivot position.

And, hence the set of n vectors of A does not span all of $R^{m}$ . for n < m

8 0

3 years ago

The question is in the picture.

ruslelena [56]

Answer:

-8

Step-by-step explanation:

First, plug in the numbers to the equation:

$-4(-1)^{0} 2$