Answer:
98
Step-by-step explanation:
f(x) = 10x² + 8
= 10(-3)² + 8
= 10 (9) + 8
= 90 + 8
= 98
Answer: 0.9995
Step-by-step explanation:
Number of digits to make any code (0 to 9) = 10
If repetition is allowed , then the total number of possible four digits pin codes that can be formed= 
The number of ways to make for digit code without repetition of digits =

The number of ways to make for digit codes having repetition =

Probability that a person has pin code that has repetition:-

Let x be number of pin codes with repeating digits.
Using binomial probability distribution formula ,
If the PIN codes of seven people are selected at random, then the probability that at least one of them will have repeating digits:-

Hence, the probability that at least one of them will have repeating digits = 0.9995
Replace B and small b and A by its values then multiply by 2 on both sides. You will get 42= 7h then h=6
Answer:
94° and 86°
Step-by-step explanation:
'x-8' = smaller angle
'x' = larger angle
x - 8 + x = 180
2x = 188
x = 94
94 - 8 = 86
Answer:

Step-by-step explanation:
because you put each thing to the power