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vovangra [49]
3 years ago
7

each hour the number of bacteria in dr. nall's petri dish tripled what percent is the population compared to the population the

hour before
Mathematics
1 answer:
yan [13]3 years ago
3 0
The starting percent is 100%. After one hour, bacteria tripled, so it is 300%.
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suppose for everyone cup of rice I add 2 3/4 cups of water. If I add 2 1/2 cups of rice, how much cups of water do I add?
Brrunno [24]

Answer:

6 7/8

Step-by-step explanation:

Since 1 cup of rice is added to 2 3/4 water

We are to determine the Amount of water to be to 2 1/2 cups of rice

Let the unknown number for water be x

So let's solve

1 cup of rice=11/4 water

5/2 cup of rice=x water

Cross multiply

x=5/2×11/4

x=55/8

X=6 7/8

Therefore,6 7/8 water is needed

8 0
3 years ago
A rectangular card has an area of 120 over 1\4 square inches. The card is 6 over 1\2 inches wide. How long is the card???? if u
Anika [276]
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the width is 6/(1/2) or 6 x 2 or 12 inches
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velikii [3]
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(3x20)(20+3)
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1380
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Tatiana [17]
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If you invest 2,000 today in a bank that gives you a 4 percent annual interest rate, which of these items can you buy in seven y
postnew [5]
I=prt
i=2000 X .04 X 7
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You can get C
8 0
3 years ago
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