The full question is this:
What disease can be transmitted by ingesting contaminated foodd?
A. Chlamydia
B. E. coli.
C. Flu
D. Staph.
The correct option is B.
Some E.coli are harmless while some are pathogenic and can cause diseases such as diarrhea. The E.coli that cause diarrhea can be transmitted through contaminated food or water. Beef and dairy cattle are animal reserves of E.coli; they are found in the intestinal tracts of these animals and they cause illnesses in people who eat beef or take milk obtained from these cattle.
3-5 days is how long you can go without water
Rabbit's position vector (r) in the unit vector is 203.5î - 57j and the magnitude and directional angle of vector (r) are 195.35m and 0.004° respectively.
Given
x = 0.3t² + 7.2t + 28
y = 0.22t² - 9.1t +30
At t = 15s
x = 0.3(15)² + 7.2(15) +28 = 203.5
y = 0.22(15)² - 9.1(15) + 30 = -57
The rabbit's position vector (r) in unit vector notation is:
r = 203.5î - 57j
The magnitude of position vector (r)
r = √x² + y²
r = √(203.5)² - (57)² =√38163.25
= 195.35m
The directional angle of position vector (r)
tanθ = y/x = -57/203.5
θ =
(-57/203.5)
θ = 0.004°
Hence, rabbit's position vector (r) in the unit vector is 203.5î - 57j and the magnitude and directional angle of vector (r) are 195.35m and 0.004° respectively.
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Answer:
A is true
Explanation:
The other choices are false