Probability(error in one block)= 1/5
<span>Probability(error in 3 blocks)= 3*(1/5)= 0.6</span>
Let,
0 = No error
<span> 1 = error
</span>Hence.
E(x) = 0.4 x 0 x+0.6 + 1
= 1.6
Answer:
The volume of the tent is 
Step-by-step explanation:
we know that
The volume of the square pyramid (child's tent) is equal to

we have


substitute

Answer:
45000
Step-by-step explanation:
Answer:
60
Step-by-step explanation:
Look at the attachment