E porque ya lo use y es facil
Answer:
Option D
Step-by-step explanation:
We are given the following equations -

It would be best to solve this equation in matrix form. Write down the coefficients of each terms, and reduce to " row echelon form " -
First, I swapped the first and third rows.
Leading coefficient of row 2 canceled.
The start value of row 3 was canceled.
Matrix rows 2 and 3 were swapped.
Leading coefficient in row 3 was canceled.

And at this point, I came to the conclusion that this system of equations had no solutions, considering it reduced to this -

The positioning of the zeros indicated that there was no solution!
<u><em>Hope that helps!</em></u>
Answer:
Constant of variation is 24.
Step-by-step explanation:
Inverse variation states that a relationship between two variables in which the product is remain constant.
If one variable increases then, the other one decreases in proportion so that the product is unchanged,
if y is inversely proportional to x i.e
or
;where k is the constant of variation.
It is given that 3 identical water pumps takes 8 hours to fill a pool,
since, it will take less time with more pumps, so it is an inverse variation.
By definition of inverse variation;

Substitute the values to solve for k;

Multiply by 3 to both sides we get;

Simplify:
k = 24
Therefore, the constant of variation is, 24
Answer:
28 square units.
Step-by-step explanation:
Let us divide the shape into two rectangles and a right triangle. The resulting composite figure is attached.
As we see in the figure the area
of the triangle is
.
The area
of the bigger rectangle is (it's actually a square )
,
and the area of the smaller rectangle is
.
Therefore, the total area
of the shape is



To find the length of the base, we have to understand that area of triangle:
Base x height/2
Therefore we would multiply the area by 2 and divide by 4 to find the answer:
24x2/4
=48/4
=12
Therefore the answer is 12m.
Hope it helps!