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earnstyle [38]
4 years ago
8

A social networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. The fo

llowing expression represents the number of active members on the site after t years.
Mathematics
2 answers:
kotykmax [81]4 years ago
6 0

Answer:

400000 * (1 + 0.32)^t

= 400000 * 1.32^t

Fed [463]4 years ago
6 0

Answer:

y=400,000(1.32)^t

Step-by-step explanation:

Equations for exponential growth are of the form

y = a(1+r)ˣ, where a represents the initial amount, r represents the percent of growth per year and x represents the amount of time.

In this case, the site currently has 400,000 members; this is our value for a.

The growth is expected to be 32% per year; 32% = 32/100 = 0.32; this is r.

We are using t for time.

This gives us

y=a(1+r)^x\\\\y = 400,000(1+0.32)^t\\\\y = 400,000(1.32)^t

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The old building at the back of the school is badly in need of repair. the company Hsa and the executive are planning to renovat
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Answer:

a. If the area of the tiles is greater than or equal to the area of all the rooms.

b. 24

c. 360

Step-by-step explanation:

a. Explain how you would estimate whether Ted has enough tiles to cover all the kitchen floors in the entire apartment building?

Ted would have enough tiles if the  area of the tiles is greater than or equal to the area of all the rooms. Since we have 500 one meter square tiles, we have 500 m² of tiles.

Since the rooms are 6 m long and 4 m wide, the area of each room is 6 m × 4 m = 24 m². Since there are 15 rooms, the area of all the rooms is 15 × 24 m² = 360 m².

Since the area of the tiles = 500 m² is greater than the area of the rooms = 360 m², Ted would have enough tiles to cover all kitchen floors in the entire apartment building.

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c. How many tiles are needed to cover all the floors in the entire building?

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