Answer:
option 1
Step-by-step explanation:
(-2) (25/7)
-50/7 = -7 1/7
Simplify the right hand side:

Expand the left hand side:

Subtract 2x from both sides:

Divide both sides by 4:

Answer:
Step-by-step explanation: The earth rotates 34 km every 32 seconds. We can simplify this by dividing both sides by 32. Now, we have 34/32 km every 32 seconds. Now, to further simplify this, we need to convert 34/32 to a mixed number 34/32 = 1 2/32 which then can be simplified to 1 1/16. So, near the equator, the speed of Earth's rotation is 1 1/16 km per second.