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Scorpion4ik [409]
3 years ago
6

Please help for 15 points

Mathematics
1 answer:
labwork [276]3 years ago
6 0

Answer: C. The number of rain days decreased over the last 6 months

Step-by-step explanation:

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The doubling period of a bacterial population is 15 minutes. At time t= 80 minutes, the bacterial population was 90000​
Papessa [141]

Answer:

here i finished!

hope it helps yw!

Step-by-step explanation:

The doubling period of a bacterial population is 15 minutes.

At time t = 90 minutes, the bacterial population was 50000.

Round your answers to at least 1 decimal place.

:

We can use the formula:

A = Ao*2^(t/d); where:

A = amt after t time

Ao = initial amt (t=0)

t = time period in question

d = doubling time of substance

In our problem

d = 15 min

t = 90 min

A = 50000

What was the initial population at time t = 0

Ao * 2^(90/15) = 50000

Ao * 2^6 = 50000

We know 2^6 = 64

64(Ao) = 50000

Ao = 50000/64

Ao = 781.25 is the initial population

:

Find the size of the bacterial population after 4 hours

Change 4 hr to 240 min

A = 781.25 * 2^(240/15

A = 781.25 * 2^16

A= 781.25 * 65536

A = 51,199,218.75 after 4 hrs

6 0
3 years ago
I GIVEEEE BRAINLILSTTT
boyakko [2]
31 hope that helps have a good one
8 0
3 years ago
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Bruce collects stamps. He collected a total of 250 stamps. If 72% of the stamps he collected were foreign, how many other stamps
mestny [16]

Answer:

He collected 180 other stamps

Step-by-step explanation:

Sorry if it's wrong

5 0
3 years ago
Read 2 more answers
. A piece of wire is 11 1/4 yards long. It is cut into 9 equal pieces. What is the length of each piece of the wire? *
laila [671]

djdhdhusidhdushdhd

Carryonlearning <3

The number of subsets of a set is 256, and the number of subsets of a set is 128. If | ∪ | = 2 × | ∩ |, then what is the value of | ∩ |? and what will be the number of subsets of the set ∩ ?

3 0
2 years ago
A recipe that yields 12 cups of soup calls for 28 ounces of beef broth how many ounces of beef broth do you need to make 18 cups
Genrish500 [490]

Answer:

42

Step-by-step explanation:

for one cup 28/12

for 18 cup,

(28/12)×18

=42

6 0
2 years ago
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