Answer:
The second answer choice is right
Step-by-step explanation:
Answer:
1.21e+6 seconds
525,600 minutes
Step-by-step explanation:
Seconds in 1 day: 86,400
Seconds in 14 days: 1.21e+6
multiply the time value by 86400
525600
multiply the time value by 525600
Answer:
True
Step-by-step explanation:
Answer:
1 Pen cost $2.25
Step-by-step explanation:
Assume:
Cost of Pen = a
Cost of pencil = b
Cost of notebook = c
a = 3b -------------------(1)
c = 4a -------------------(2)
2a + 6b + c = $18 -----(3)
From equation (1), b = a ÷ 3 ---------(4)
Substitute equations (2) and (4) in equation (3)
2a + 6 * (a ÷ 3) + 4a = $18
2a + 2a + 4a = $18
8a = $18
a = $2.25
Therefore, 1 Pen cost $2.25
5 x 108. The purpose of scientific notation is for scientists to write very large, or very small, numbers with ease.
