Answer:
3x = 120
x = 40
Answer:
a) (x + 2)(x + 8) ; b) (x + 4)(x + 3) ; c) (x + 12) (x + 1)
Step-by-step explanation:
Think about what would add to make the 'b' and multiply to make the 'c' using this equation: ax² + bx + c
a) (x + 2)(x + 8)
b) (x + 4)(x + 3)
c) (x + 12) (x + 1)
Step-by-step explanation:
c^2( c^2-10c+25)
=c^4 - 10c^3 + 25c^2
Step-by-step explanation:
If Marian travels, by car, on the highway. At 10 and 35 minutes he is at kilometer 25. After a period of time, at 11 and 15 minutes, he is at kilometer 100.
Total distance covered = 25km + 100km
Total distance covered by Marian = 125km
Total time taken by marian = 10hr 35min + 11hr + 15min
Total time taken by marian = (10+11)hr + (35+15)min
Total time taken by marian = 21hr 50mins
Total time taken by marian = 21 * 50/60 hr
Total time taken by marian (Duration) = 21.833hr
Average speed = Total distance covered/Total time taken
Average speed = 125/21.833
Average speed = 5.725km/hr
Convert to m/s
5.725km/hr = 5.725*1000/3600
5.725km/hr = 5725/3600
5.725km/hr = 1.5903 m/s
Hence the average speed expressed in SI unit is 1.5903 m/s