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Feliz [49]
3 years ago
5

The world record for running the marathon is about 26 miles in 130 minutes. How long would a runner at that speed take to run 9

miles?

Mathematics
1 answer:
Brums [2.3K]3 years ago
3 0
45 minutes
26/130=9/45
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Alex originally paid $5200 for her car 1 year ago. The value of her car would is $4,420. What is the percent of decrease in the
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3 years ago
Pleaseee someone help me :( Ive been stuck on this for an hour
Whitepunk [10]

Answer:

The number of times organism B's population is larger than organism A's population after 8 days is 32 times

Step-by-step explanation:

The population of organism A doubles every day, geometrically as follows

a, a·r, a·r²

Where;

r = 2

The population after 5 days, is therefore;

Pₐ₅ = = 32·a

The virus cuts the population in half for three days as follows;

The first of ta·2⁵ he three days = 32/2 = 16·a

The second of the three days = 16/2 = 8·a

After the third day, Pₐ = 8/2 = 8·a

The population growth of organism B is the same as the initial growth of organism A, therefore, the population, P₈ of organism B after 8 days is given as follows;

P₈ =  a·2⁸ = 256·a

Therefore, the number of times organism B's population is larger than organism A's population after 8 days is P₈/Pₐ = 256·a/8·a = 32 times

Which gives, the number of times organism B's population is larger than organism A's population after 8 days is 32 times.

Hope this helps you out! :)

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6 0
4 years ago
A certain university recently calculated the number of days that its students took to complete their master's degrees. It took 1
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c) 700

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Add 800 and 600, and then divide by the number of number, or in this case, two. This should give you 700.

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Answer:

-2

Step-by-step explanation:

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21.50 x 25 = 537.50
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537.50 + 53.75 = 591.25
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3 years ago
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