3 years ago

4x+5=21 What’s the answer

Mathematics

1 answer:

ioda3 years ago

5 0

Answer:

X=4

Step-by-step explanation:

Subtract 5 from both sides and you get 4x=16. Divide both sides by 4 and you get x=4

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Answer:

Step-by-step explanation:

for n ∈ N

Since Actuary Rahul examines low-risk policies, continuing until a policy with a claim is found and then stopping.

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$\sum ^\infty _{n=1} (0.9)^{n-1}*(0.1)*(0.8)^n\\\\=(\frac{0.1}{0.9} \sum ^\infty _{n=1}(0.72)^n\\\\=\frac{1}{9} (\frac{0.72}{0.28} )\\\\=\frac{2}{7} \\\\=0.2857$

<h3>the probability that Actuary Rahul examines fewer policies than Actuary Toby is 0.2857</h3>

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