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pshichka [43]
3 years ago
9

The expression below represents the number of bacteria in a petri dish after t hours. Interpret the meaning of the expression.

Mathematics
1 answer:
konstantin123 [22]3 years ago
3 0

The answer is B) The initial number of bacteria is 57, and the growth rate is 31% per hour.


The expression shown is an <em>exponential expression</em>.  An exponential expression usually takes the form ab^{x}, as this one does.  A represents the <em>initial value</em>, in this case-the initial number of bacteria.  B represents the <em>growth rate</em>.  When it is an increasing growth rate, it will begin with 1, because it will have everything it had before, plus the percent increase, the decimal portion.  In this case, a=57, and b=0.31.


Hope this makes sense!

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Please help me I will give 12 points
olga2289 [7]

Answer:

5/8

Step-by-step explanation:

=3/8×5/3

=5/8

Hope this helps u....

8 0
3 years ago
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A. State the coordinates of each point and in which quadrant they lie.
olga_2 [115]

Answer:

a)

  • I   (1, 2)    quadrant 1
  • J  (3, -1)   quadrant 4
  • K  (-4, 0)  x-axis
  • L  (-4, 2)  quadrant 2
  • M (4, -4)  quadrant 4

b) (-4, 0)

c)  (4, 2)

d) (-3, 1)

Step-by-step explanation:

a)

  • I   (1, 2)    quadrant 1
  • J  (3, -1)   quadrant 4
  • K  (-4, 0)  x-axis
  • L  (-4, 2)  quadrant 2
  • M (4, -4)  quadrant 4

b) (-4, 0)  doesn't move as it is already on the x-axis

c)  (4, 2)

d) (-3, 1)

reflected in the x-axis = (3, 1), then reflected in the y-axis = (-3, 1)

8 0
3 years ago
Un taxi de la empresa “El rápido” se desplaza hacia el sur a una velocidad comprendida entre 60 km/h y 80 km/h. ¿Entre que valor
svetoff [14.1K]

Answer:

Los valores entre los cuales oscila la distancia del automóvil después de 5 horas es entre 300 metros y 400 metros.

Step-by-step explanation:

Dado que la velocidad mínima del taxi = 60 km / h, la velocidad máxima del taxi = 80 km / h

Por lo tanto, tenemos la distancia mínima cubierta después de una hora = 60 km / h × 5 h = 300 m

La distancia máxima recorrida después de una hora = 80 km / h × 5 h = 400 m, lo que da el rango de variación de la distancia recorrida entre 300 my 400 metros.

Donde, la distancia cubierta = x, tenemos

300 metros ≤ x ≤ 400 metros.

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4 years ago
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VARVARA [1.3K]
X= 23/7 so twenty-three sevenths
7 0
3 years ago
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Sati [7]
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Using the value of b=a+6 in a+b=30 gives you:

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a=12, and since b=a+6

b=18

So the two numbers are 12 and 18.
7 0
3 years ago
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