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Leona [35]
3 years ago
6

It takes Jill 2 hours to run 14.5 miles. At this rate, how far could she run in 3 hours?

Mathematics
2 answers:
nika2105 [10]3 years ago
6 0

Answer: 21.75 miles

Step-by-step explanation:

If you put it in a proportion, 2/14.5 and 3/? you multiply 14.5 by 3 then divide that answer by 2 to find the miles she can run in 3 hrs.

Simora [160]3 years ago
3 0

Answer:

Step-by-step explanation:

So we can just set up a proportion

14.5/2=x/3

we can cross multiply

so that means

2x=43.5

x=21.75

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The coordinate (2,20) indicates that he rode 20 miles in 2 hours
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3 years ago
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Freddy’s savings account went from $520 to $321 after he purchased a new bike. What was the percent decrease?
Vinil7 [7]

Step-by-step explanation:

The bike cost $199 to get $199 you do a number line then label 520 then at the end label 321 so then you do -20 then -100 then -50 then -20 then -9. so now you add them up 20+100+50+20+9 which equals =199

so bike cost $199

then 520%×199= 1034.8

or 520%×321=1669.2

so the  percentage is 1669.2 or 1034.8 probably 1669.2 but they bot count.

5 0
3 years ago
Multiply. 3(6u)
aleksandr82 [10.1K]

Answer:

3u+ 18

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6 0
2 years ago
In a game of poker a hand of five cards is dealt to each player from a deck of 52 cards. find the probablility of a hand contain
aalyn [17]

Answer:

0.00597

Step-by-step explanation:

Given,

Total number of cards = 52,

In which flush cards = 20,

Also, the number of spade flush cards = 5,

Since,

\text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}

Thus, the probability of a hand containing a spade flush, if each player has 5 cards

=\frac{\text{Ways of selecting a spade flush card}}{\text{Total ways of selecting five cards}}

=\frac{^{20}C_5}{^{52}C_5}

=\frac{\frac{20!}{5!15!}}{\frac{52!}{5!47!}}

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7 0
3 years ago
An initial population of 415
slamgirl [31]

Answer:

The exponential function to model the duck population is:

f(n)=415*(1.32)^n, where:

x is the duck population

n is the number of years

Step-by-step explanation:

In order to calculate the duck population you can use the formula to calculate future value:

FV=PV*(1+r)^n

FV=future value

PV=present value

r=rate

n=number of periods of time

In this case, the present value is the initial population of 415 and the rate is 32%. You can replace these values on the formula and the exponential function to model the duck population would be:

f(n)=415*(1+0.32)^n

f(n)=415*(1.32)^n, where:

x is the duck population

n is the number of years

3 0
3 years ago
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