Answer:
<h2><u><em>
Hope it helps!!!</em></u></h2><h2><u><em>
Brainliest pls!!!</em></u></h2>
Answer:
Step-by-step explanation:
Let be "x" the time in minutes a 150-pound person must walk at 4 mph to use at least 190 calories.
The amount of calories that a 150-pound person uses in 1 minute when walking at a speed of 4 mph is:
Therefore, knowing this, we can write the following proportion:
Finally, we must solve for "x" in order to find its value.
Multiplying both sides of the equation by 190, we get this result:
Answer:
A
Step-by-step explanation:
I can put explanation in the comments
Given:
The system of equations is:
The given matrices are , , .
To find:
The correct names for the given matrices.
Solution:
We have,
Here, coefficients of x are 1 and 1 respectively, the coefficients of y are 3 and -3 respectively and constant terms are 5 and -1 respectively.
In the x-determinant, the coefficients of x are in the first column and the constant terms are in the second column. So, the x-determinant is:
In the y-determinant, the constant terms are in the first column and the coefficients of y are in the second column. So, the y-determinant is:
In the system determinant, the coefficients of x are in the first column and the coefficients of y are in the second column. So, the system determinant is:
Therefore, the first matrix is y-determinant, second matrix is x-determinant and the third matrix is the system determinant.