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Inessa [10]
3 years ago
6

There were twelve times more children than adults at the matinee performance of

Mathematics
1 answer:
levacccp [35]3 years ago
5 0

Answer:

Call the number of children and adults, c and a.

Then we have

c = 12a and

c + a = 455

Substituting we have

12a + a = 455

13a = 455

a = 35 adults

c = 12(35) = 420 kids

Step-by-step explanation:

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the distant around a track is 1/4 mile. a marathon is 26 1/5 miles. How many laps does it take to run a marathon​
sleet_krkn [62]

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108 1/8

Step-by-step explanation:

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3 years ago
Two planes that are traveling toward each other are 720 miles apart. One plane is traveling 40 miles per hour faster than the ot
natali 33 [55]

Answer:

y = 460 miles per hr

x = 500 miles per hr

Step-by-step explanation:

Let the planes be X any

Let their speeds be xmiles/hr and ymiles/hr respectively

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Distance travelled by X to meet Y = 0.75x

Distance travelled by Y to meet X = 0.75y

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Put x = y + 40 in eqn 1

0.75(y+40) + 0.75y = 720

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7 0
2 years ago
In 2000, Florida's total population was 15,982,378 people and 183 out of every 1000 residents were 65 years and older. Determine
dmitriy555 [2]
Hello! There were 15,982,378 people living in Florida in 2000 and 183 out of 1,000 were ages 65 and over. That's 18.3% of all Florida residents, because 183/1,000 is 0.183 and 0.183 * 1,000 is 18.3. What you could do is multiply the amount of people living in Florida by the percentage, in this case, 18.3% (0.183). When you do that, you get 2,924,775.174 or 2,924,775 when rounded to the nearest whole number. Either way, you can't have part of a person. In the year 2000, there were 2,924,775 Florida residents 65 and older.
5 0
3 years ago
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