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Ann [662]
2 years ago
11

A colony of bacteria has 10,000 bacteria and is growing exponentially. The inequality 10,000(4x) ≥ 320,000 represents the hours,

x, for which the colony will have at least 320,000 bacteria.
Which interval represents the hours when the colony will have at least 320,000 bacteria?

[2.5, ∞)
[3, ∞)
[32, ∞)
[0, 2.5]
Mathematics
2 answers:
dexar [7]2 years ago
4 0

Answer:

A [2.5, ∞)

Step-by-step explanation:

Alisiya [41]2 years ago
4 0

Answer:

The answer is A.

Step-by-step explanation:

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8 0
2 years ago
Solve the system: <br> 2x+6y=36<br> x+4y=20
Assoli18 [71]

<u>Let's solve this problem step-by-step</u>

<u>Let's set</u>:

   2x + 6y = 36 -- equation 1

   x + 4y = 20 -- equation 2

(equation 2) * 2

   2x + 8y = 40 -- equation 3

(equation 3) - (equation 1)

   2y = 4

   y = 2 -- equation 4

Plug (equation 4)'s value of y into (equation 2)

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   x = 20 - 8

   x = 12

<u>Thus x = 12 and y = 2</u>

<u>Let's check, by substituting these values</u>

  2x + 6y = 36\\2(12)+6(2) = 36\\24+12=36\\36=36\\\\x+4y=20\\12+4(2)=20\\12+8=20\\20=20

<u>Answer: x = 12 and y = 2</u>

Hope that helps!

5 0
2 years ago
Easy 10 points and brainliest :)
Snezhnost [94]

Answer:

quadrant 1

Step-by-step explanation:

both of them are positive

8 0
3 years ago
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What is the length of DF in cm DE=2cm EF=6cm
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12 cm because 2•6=12
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