False positives are positive results from the test of a non-infected person, which happens 100-97=3% of the time, choice C.
36/100 is 9/25 in simplest form
Answer:
7 × 3 = 21
Step-by-step explanation:
3 rows of flowers with 7 flowers in each row means 3 times 7, and 3 times 7 equals 21.
Let <em>a</em> be the speed of the plane and <em>w</em> the wind speed.
<em>a</em> - <em>w</em> = (8460 km)/(9 h) = 940 km/h
<em>a</em> + <em>w</em> = (9600 km)/(8 h) = 1200 km/h
Add these speeds together to eliminate <em>w</em> and solve for <em>a</em> :
2<em>a</em> = 1740 km/h
<em>a</em> = 870 km/h
Subtract the first vector from the second to eliminate <em>a</em> and solve for <em>w</em> :
2<em>w</em> = 260 km/h
<em>w</em> = 130 km/h
