Answer:
Step-by-step explanation:
To find the probability that he answered all correctly
let n be the number of questions correctly answered
prob of correct answer: 1/4 = 0.25
prob of answering all correctly:
p(n=10): 0.25∧10 = 0.000000953
prob of wrong answer: 3/4 = 0.75
Prob that he will fail the 10:
prob(n=0): 0.75∧10 =0.0563
Answer:
C. 40-4x-12x^2
Step-by-step explanation:
very simple
? – (20 – 4x – 5x2) = 20 – 7x2, so ? = 20 – 7x2 + (20 – 4x – 5x2)
? = 20 – 7x2 + (20 – 4x – 5x2)=20-7x²+20-4x-5x²=40-12x²-4x
Answer:
twelve faces
Step-by-step explanation:
12 sides
Answer: 960 watts if it is always on which is 24 hours tell me if im wrong