Answer:

Step-by-step explanation:
Let:

The area of the cardboard can be calculated using the formula to find the area of a rectangle:

The area of the new cardboard would be:

So:

Solving for h:

Therefore, the dimensions of the initial cardboard are:

<u><em>Translation:</em></u>
Sea:

El área de la cartulina se puede calcular usando la fórmula para encontrar el área de un rectángulo:

El área de la nueva cartulina sería:

Entonces:

Resolviendo para h:

Por lo tanto, las dimensiones de la cartulina inicial son:

Answer:
Its two and Four,
Step-by-step explanation:
The ratio is two dogs to 4 cats.
We can have two d = rt equations.
d = 40 t
d = 50 (9 - t)
We know the distance is the same, so we can just set the equations equal to each now.
40 t = 50 (9 - t)
40 t = 450 - 50 t
90 t = 450
t = 5
So, Terrell took 5 hours going 40 mph, and 4 hours going 50 mph. 5 * 40 gives us 200 miles one way.
<u>Answer:</u>
f(x) = 7 is an even function.
<u>Step-by-step explanation:</u>
Any function is even when
and gives a graph that is symmetric with respect to the y-axis.
We are given these options and we have to check whether which of them is an even function:

and
- This function is not even

and
- This function is not even

and
- This function is not even

and
- EVEN FUNCTION
We get the same value for
and
, therefore f(x) = 7 is an even function.