Three fewer than one forth of x is 12. What is the equation that represents the description.

1- un tinaco se llena en 8 horas utilizando 4 llaves. en cuanto tiempo se llenara con 7 llaves?

svetoff [14.1K]

Answer: 4.6 horas.

Step-by-step explanation:

Podemos calcular el tiempo necesario por una llave:

si sabemos que se llena en 8 horas con 4 llaves, entonces una sola llave va a tardar 4 veces 8 horas en llenar el tinaco, es decir, una sola llave tarda:

4*8h = 32 horas

ahora, si usamos 7 llaves, el tiempo necesario va a ser un septimo de eso:

(32 h por llave)/(7 llaves) = 32/7 horas = 4.6 horas.

4 0

2 years ago

Marcus looked out in the audience and saw 40% of the chairs were filled. There were 42 people sitting in the chairs. Enter the t

puteri [66]

Answer:

I say it is 16.8

Step-by-step explanation:

40 x 42

100

= 16.8

4 0

2 years ago

Una botella de refresco contiene 0.025 g de agua carbonatada en 1.5 litros de solución calcula las ppm de agua carbonatada los d

bekas [8.4K]

Answer:

Choose one law below write a five paragraph cause effect essay.

• In Peoria, Illinois, Basketball hoops may not be installed on a driveway.

• In Evanston, Illinois, Bowling is forbidden.

• In Chicago, Illinois, Law forbids eating in a place that is on fire.

• In Illinois, Those under 21 can drink legally, but they must be enrolled in a culinary program to do so.

• In Chicago, Illinois, It is illegal to give a dog whiskey.

• In Zion, Illinois, It is illegal for anyone to give lighted cigars to dogs, cats, or any other domesticated animals.

• In Chicago, Illinois, It is forbidden to fish while sitting on a giraffe’s neck.

• In Chicago, Illinois, Kites may not be flown within the city limits.

• In Evanston, Illinois, It is unlawful to change clothes in an automobile with the curtains drawn, except in case of fire.

• In Galesburg, Illinois, No bicyclist may practice “fancy riding” on any city street.

• In Horner, Illinois, It is against the law to use a slingshot unless you are a law enforcement officer.

• In Kirkland, Illinois, Bees are not allowed to fly over the village or through any of Kirkland's streets.

• In Orland Park, Illinois, No pool tables are allowed in a public establishment.

• In Ottawa, Illinois, Spitting on the sidewalk is a criminal offense.

I need help, please is for today

7 0

2 years ago

A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y = 5 − x 2 . What are the dimensions

kherson [118]

Answer:

A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola

y=5−x^2. What are the dimensions of such a rectangle with the greatest possible area?

Width =

Height =

Width =√10 and Height $= \frac{10}{4}$

Step-by-step explanation:

Let the coordinates of the vertices of the rectangle which lie on the given parabola y = 5 - x² ........ (1)

are (h,k) and (-h,k).

Hence, the area of the rectangle will be (h + h) × k

Therefore, A = h²k ..... (2).

Now, from equation (1) we can write k = 5 - h² ....... (3)

So, from equation (2), we can write

$A =h^{2} [5-h^{2} ]=5h^{2} -h^{4}$

For, A to be greatest ,

$\frac{dA}{dh} =0 = 10h-4h^{3}$

⇒ $h[10-4h^{2} ]=0$

⇒ $h^{2} =\frac{10}{4} {Since, h≠ 0}$

⇒ $h = ±\frac{\sqrt{10} }{2}$

Therefore, from equation (3), k = 5 - h²

⇒ $k=5-\frac{10}{4} =\frac{10}{4}$

Hence,

Width = 2h =√10 and

Height = $k =\frac{10}{4}.$

8 0

2 years ago

If I need 48 cups of flour but I only have 1/4 how many do I need

xz_007 [3.2K]

48/4 is 24 so you’ll need 28 1/4’s

4 0

3 years ago