Answer:
1. 25%
2. 0.40
3.
4.
Step-by-step explanation:
Solve each individually;
25% =
Just plug in the numbers.....
3(100) + 9(39) = then multiply
300 + 351= then add them
651..... 651 is your answer
Answer: 0.21
Step-by-step explanation:
Given: The number of vowels in the bag = 28
The number of consonants= 12
The total number of letters in the bag =
Probability of choosing consonant :-
After replacement the total number of letters remains same.
Probability of choosing vowel :-
Now, the probability you will choose a consonant and then a vowel (independent events) is given by :-
X^2 - 8x = (x - 4)^2 - 16
we add 16 to give x^2 - 8x + 16 which is a perfect square
x^2 - 8x + 16 = (x - 4)^2
answer is 16