PLS HELP! I WILL GIVE BRAINLIEST!! AND THE REST OF MY POINTS! Last week the number of bacteria in a petri dish was 2.25×102. Thi

Question

PLS HELP! I WILL GIVE BRAINLIEST!! AND THE REST OF MY POINTS!

Last week the number of bacteria in a petri dish was 2.25×102. This week the number of bacteria in the petri dish is 2.75×105. How many times more bacteria are in the petri dish this week?

Round the decimal to the nearest tenth.

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Hưng Khoa 3 years 2021-08-28T14:36:50+00:00 2 Answers 33 views 0

Answers ( )

  1. MichaelMet
    0
    2021-08-28T14:37:57+00:00
    Reply

    Answer:

    1221.2 times more

    Step-by-step explanation:

    number of bacteria last week = 2.25*10^2

    = 2.25*100

    = 225

    number of bacteria this week = 2.75*10^5

    = 2.75*100000

    = 275000

    275000 - 225 = 274775

    274775 / 225 = 1221.2

  2. kiet
    0
    2021-08-28T14:38:14+00:00
    Reply

    (2.75 x 10⁵ ) / (2.25 x 10² )

    = (2.75 / 2.25) x 10⁵⁻²

    = 1.2 x 10³ times .

    (That’s 1,200 times as many.)

    I hope this helps!

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