Answer: 22
Step-by-step explanation:
Answer:
91.72% likely that the soil sample contains organic matter.
Step-by-step explanation:
A probability is the number of desired outcomes divided by the number of total outcomes.
We have that:
Of 700 samples that contain organic matter, 665 give a positive result and 700 - 665 = 35 give a negative result.
Of 300 samples that do not contain organic matter, 300 - 240 = 60 give a positive result and 240 give a negative result.
If a soil sample test gives a positive result, it is ___% likely that the soil sample contains organic matter.
665 with organic matter out of 665 + 60 = 725 positive tests.
665/725 = 0.9172
0.9172*100% = 91.72%.
91.72% likely that the soil sample contains organic matter.
The distributive property is being used because a is being distributed to b and c, which leaves you with ab + ac
If r and p are perpendicular:
1 + 2 = 90°
3 = 90°
4 + 5 = 90°
6 = 90°
If any one of these are true, r and p must be perpendicular