Unit 2, lesson 4: proportional relationships and equations
a certain ceiling is made up of tiles. every square meter of ceiling requires 10.75 tiles. fill in the table
with the missing values.
square meters of ceiling
number of tiles
x10
100
2. on a flight from new york to london, an airplane travels at a constant speed. an equation relating
distance traveled in miles, d, to the number of hours flying, 1, is t =
e number of hours flying, 1, ist = 50d. how long will it take the
airplane to travel 800 miles?
2. each table represents a proportional relationship. for each, find the constant of proportionality
1

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.

the correct answer is x/3+10≥32

hope this !