The measles virus measures 220 × 10 -9 meter.
What is this measurement in scientific notation?
0.22 x 10-6 meter
o 22 * 10 -8 meter
2.2 x 10-7 meter
0.000000220 meter

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.

daren is correct because