Answer:
The Probability of randomly picking the third species=0.316
Step-by-step explanation:
In a bed of mussels on the coast of California in which five species live,
The Abundance of each Species are 100, 500, 998, 12, and 1548
Total Value=100+500+998+12+1548=3158
Abundance of third Species=998
Probability
Probability (randomly picking the third species) 
=
=0.316
Step-by-step explanation:
Slope (m) =ΔYΔX=12=0.5θ =arctan(ΔY)ΔX=26.565051177078°ΔX = 6 – 4 = 2ΔY = 10 – 9 = 1Distance (d) = √ΔX2 + ΔY2 = √5
= 2.2360679774998
Answer:
y = 541
Step-by-step explanation:
The mean is calculated as
mean = 
Mean of set A = 
= 
= 266
ratio between means = 7 : 12, then
mean of set B = 
× 266 = 456 , thus
= 456 ( multiply both sides by 5 )
1739 + y = 2280 ( subtract 1739 from both sides )
y = 541
Answer:
x = 79°
Step-by-step explanation:
∠ABE = ∠BEF = 41° [Alternate angle ]
Now sum of angles of a triangle = 180°
Therefore,
∠EBF + ∠BEF + ∠BFE = 180°
60° + 41° + x = 180°
x = 180° - 60° - 41°
x = 79°
Step-by-step explanation:
I'm not sure if this correct or not
