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Kruka [31]
3 years ago
13

A hot air balloon is rising at a rate of 40 meters per minute. How fast is it rising in feet per second? Use conversion factors

and round to 2 decimal places. Note that 1m=3.28ft
Mathematics
2 answers:
Igoryamba3 years ago
8 0
Set up your multiplication so that you cancel out units that you don't want and introduce those that you do...

(40m/min)(min/60sec)(3.28ft/m)=2.19ft/sec (to nearest one-hundredth)
saw5 [17]3 years ago
5 0
The answer is 400 meters
.
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The energy saving from recycling one glass bottle will power the oven Adam uses to cook the Turkey for 7.5 minutes glass used fo
DiKsa [7]
6 hours=360 minutes
Glass bottles needed to cook for 6 hours=360/7.5
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7 0
3 years ago
Can anyone help me with this problem
Rama09 [41]

9514 1404 393

Answer:

  8. A = {Delaware, New Jersey, Pennsylvania}

  9. |B| = 3

Step-by-step explanation:

8. Dates prior to 1 Jan 1788 are those in 1787. The three states admitted in 1787 are listed as Delaware, Pennsylvania, New Jersey. It is usually convenient to list elements of a set in lexicographical order:

  A = {Delaware, New Jersey, Pennsylvania}

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9. The months June and July appear 3 separate times on the list, so there would be 3 elements in the set B.

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3 0
3 years ago
Durante una venta de liquidación, el Sr. Pablo, un profesor particular, compró un total de 12 libros de asesoría de Secundaria 4
Flauer [41]

Resolviendo un sistema de ecuaciones, vemos que se venden 6 libros de secundaria 4 y 6 libros de secundaria 1.

<h3>¿Como escribir un sistema de ecuaciones?</h3>

Primero definimos dos variables:

  • x = numero de libros de secundaria 4 vendidos.
  • k = número de libros de secundaria 1 vendidos.

Sabemos que se venden 12 libros en total, entonces:

x + k = 12

Tambien sabemos que se recauda un total de $82, entonces:

x*$8 + k*$6 = $82

Entonces tenemos dos ecuaciones.

a) Usando la primer ecuacion, podemos aislar x para tener:

x = 12 - k

b) Ahora podemos reemplazar eso en la otra ecuación para solucionar el sistema.

(12 - k)*$8 + k*$6 = $82

$96 - $2*x = $82

$2*x = $12

x = $12/$2 = 6

Es decir se venden 6 libros de secundaria 4, y como se venden 12 libros en total, los otros 6 libros vendidos son de secundaria 1.

Si quieres aprender más sobre sistemas de ecuaciones:

brainly.com/question/13729904

#SPJ1

4 0
2 years ago
Sarah is creating a circle graph to summarize survey results. What percentage must section x represent?
defon
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The answer it’s A :)
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