12u + 12(15) = 756
multiply 12 and 15
12u + 180 = 756
subtract 180 from both sides
12u = 576
divide 12 on both sides
u = 48
Answer:
1/4845
Step-by-step explanation:
The probability of selecting a defective cog first is
1/5
The second cog is
3/19
The third cog is
1/9
And the fourth cog is
1/17
Multiplying these together we get
1/5 * 3/19* 1/9 * 1/17 = 1/4845
271 rounded is 300, and 425 rounded is 400, so you could estimate the sum by adding 300 and 400, which equals 700.
Answer:
x=1
Step-by-step explanation: