Imagine to have three segment: 1 is x, another is x+7 and the last is x-5. You know that their sum is 50, so you can write:

x+(x+7)+(x-5)=50
simplify:
3x+7-5=50
3x=48
x=16

16+7=23
16-5=11

So the thee sides are 11, 16 and 23.

Hope this helped.

6 0

3 years ago

Alex can ski 960 meters in 5 minutes. If his skiing speed is increased by 20 m/min, how many meters can he cover up in 10 minute

Elden [556K]

Micky mous club house come I de

6 0

3 years ago

A plane begins to descend from a height of 202 meters. The plane decreases in altitude at an average rate of 1.8 meters per seco

stepladder [879]

The plane starts at 202 m.
All altitudes are in meters.
After 1 second, it is at 202 - 1.8
After 2 seconds, it is at 202 - 1.8 * 2
After 3 seconds, it is at 202 - 1.8 * 3
etc.
After x seconds, it is at 202 - 1.8 * x

202 - 1.8 * x is the same as 202 - 1.8x

Answer: F. t(x) = 202 - 1.8x

3 0

3 years ago