3 1/2 x 1 2/3 Step by step explanation
1 answer:
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The rule of scientifinc notation is that we can use number between 0 and 10, so here we can use 2.8. Lets do this
280 000 000 = 2.8 * 100 * 1 000 000
Now we can just multiply 2.8 by 10 to the power of number of 0 reapeted
So
- its the result
280 000 000 = 2.8 * 100 * 1 000 000
Now we can just multiply 2.8 by 10 to the power of number of 0 reapeted
So
Answer:
It takes 70 minutes for 9 team members (painting 60 sq ft per minute) to paint a 4200 sq ft wall.
Step-by-step explanation:
According to the situation the calculation is shown below:-
=
= 240 sq ft each member of the team in 36 minutes
=
= 6.67 sq ft each member of the team within 1 minute
= 60 sq ft for every 9 team members in one minute
=
= 70 minutes (or 1 hour and 10 minutes)
Hence, the 70 minutes is taken for 9 team members