Answer:
P = 1,8 %
Step-by-step explanation:
From the whole population, only 2% are geniuses. But test results, are accurate 90 %. So the probability that Albert really is a genius is:
P = 0,02 * 0,9
P = 0,018 or P = 1,8 %
Answer:
x = 5
Step-by-step explanation:
The required value of δ = 1/4.
0< |x-1| < δ
| f(x) - 4 | < 1/2 where f(x) = 6 - 2x
<h3>What are inequalities?</h3>
Inequality can be define as the relation of equation contains the symbol of ( ≤, ≥, <, >) instead of equal sign in an equation
now
| f(x) - 4 | < 1/2
|6 - 2x - 4 | <1/2
| 2-2x | < 1/2
| 1 - x | < 1/4
| x - 1 | < 1/4
since modulus function always give positive values.
0 < | x - 1 | < 1 /4
The required value of δ = 1/4.
Learn more about inequality here:
brainly.com/question/14098842
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Answer:
-3
Step-by-step explanation:
Let the number be x
2 + 9x= - 25
9x= - 27
x= - 3
Answer:
23
Step-by-step explanation:
3x+3=72
3x=72-3
3x=69
x=23