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strojnjashka [21]
3 years ago
8

If bacteria took 20 minutes to double from 2 to 4, how many bacteria would there be after 1 hour

Mathematics
2 answers:
spin [16.1K]3 years ago
8 0
32 bacteria is what I got
- hope that help!!!
iren2701 [21]3 years ago
3 0
4 * 2 * 2 * 2 = 32 bacteria

Hope it helps!
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For what value of x is the rational expression below undefined? x+8/x^2 -2x-24
Katena32 [7]
First step: Factor the expression.
(x + 8) / (x - 6)(x + 4)
Set each factor of the denominator equal to zero.
x - 6 = 0                                        x + 4 = 0
add 6 to both sides                      subtract 4 from both sides
x = 6                                             x = -4
The function would be undefined if x = 6 or x = -4
3 0
3 years ago
Read 2 more answers
Angle DCA is 120°. What percent of the circle's area does this section represent?
dolphi86 [110]
A circle is 360

so we're going to set up a proportion

120        x
------ = ------
360       100

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4 0
3 years ago
Factorise 125x^3 -27y^3
telo118 [61]

Answer:

(5x - 3y)(25x² +15xy + 9y²)

Step-by-step explanation:

125x³ - 27y³ is a difference of cubes and factors in general as

a³ - b³ = (a - b)(a² + ab + b²)

Given

125x³ - 27y³

= (5x)³ - (3y)³

= (5x - 3y)((5x)² + (5x)(3y) + (3y)²)

= (5x - 3y)(25x² + 15xy + 9y²)

6 0
2 years ago
What isn't the bets approximation for the area of this circle labeled 8 inches use3.14 to approximate pi
Arte-miy333 [17]

Answer:

50.272  in^2

Step-by-step explanation:

Step one:

Given data

Circles are described using the diameter parameter

Diameter of the circle is 8 inches

radius = 4 inche= d/2

Step two:

The area of the circle is

A= πr^2

A= 3.142*4^2

A=3.142*16

A=50.272  in^2

8 0
3 years ago
Solve using substitution.<br><br> y = –1<br> 2x − y = –1
irakobra [83]
X =1 I had this question
8 0
2 years ago
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