.
Directions: Select the correct speed.
An archery range calculated the average speed of wooden arrows shot during a competition. Which is the best representation of the average speed?
Reset
5. Which shows the expression below in simplified form?

(8.9 × 10-6) - (3.9 × 10-8)
A. 8.51 × 10-7
B. 8.861 × 10-6
C. 8.861 × 10-7
D. 8.51 × 10-6

Question

.	
Directions: Select the correct speed.
An archery range calculated the average speed of wooden arrows shot during a competition. Which is the best representation of the average speed?
Reset
5.	Which shows the expression below in simplified form?

(8.9 × 10-6) - (3.9 × 10-8)
	A. 	8.51 × 10-7
	B. 	8.861 × 10-6
	C. 	8.861 × 10-7
	D. 	8.51 × 10-6

anonymous · Answer

B.

anonymous · Answer

can u explain it to me @robtobey

anonymous · Answer

Refer to the Mathematica attachment.