Answer:
pi * pi 9.86960440109
Step-by-step explanation:
Answer:
A. 
Step-by-step explanation:
The given parabola has vertex at (2,-5).
The equation of this parabola in vertex form is given by:
, where (h,k)=(2,-5) is the vertex of the parabola.
We substitute the values to get:

The graph passes through; (0,3).




Hence the equation of the parabola is

We expand this to get:


Since the outward region was shaded, the corresponding inequality is

The correct answer is A
Answer:
I did it hope you will understand
Answer:
160
Step-by-step explanation:
If out of 30 7th graders, 12 own a dog then when you have 400 of them, 160 will have a dog as well.
The way I did this was by 400/30: which was 13.3 repeating. I then mutliplied this number by 12, to find the final answer of 160.
Answer:
504 kilos de manzanas fueron llevados a la escuela.
Step-by-step explanation:
Sean
,
la cantidad de cajas de manzanas y peras, respectivamente. De acuerdo con el enunciado, tenemos el siguiente sistema de ecuaciones:
Total de cajas
(1)
Masa de cada caja de peras
(2)
(3)
Masa de caja de manzanas
(4)
De (2) en (3), tenemos que la masa de cada caja de peras es:

Por (4), encontramos que la masa de cada caja de manzanas es:


Finalmente, de (1) tenemos la cantidad de cajas de manzana:


La cantidad de kilos de manzanas llevada a la escuela se obtiene al multiplicar la cantidad de cajas de manzana por la masa de cada caja:


504 kilos de manzanas fueron llevados a la escuela.