Answer: 60 students
Step-by-step explanation:
So, in the first situation 430 students were surveyed and 258 said that their favourite pet was a dog. The second situation is 100 students and x said that their favourite pet was a dog. We are solving x.
430=258
100= x
Cross multiply
So that is
430 x X= 100x258
430x=25800
Divide both sides by 430
Answer: 60 students
Answer:
Step-by-step explanation:
From the given information:
There are 30 collections of gems, of which 8 are worthless;
Thus, the number of the genuine diamonds = 30 - 8 = 22.
Let X = random variable;
X consider the value as 0 (for 2 worthless stone selection),
X = 1200(1 worthless stone & 1 genuine stone)
X = 2400 (2 genuine stones selected)
However, the numbers of ways of selecting and chosen Gems can be estimated as:

Thus;








To find E(X):
E(X) = (0 × 0.0644) + (1200 × 0.4046) + (2400 × 0.5310)
E(X) = 0 + 485.52 + 1274.4
E(X) = 1759.92
Answer:
Your selected answer is correct.
Step-by-step explanation:
As you can see, the line and the points given follow the same vague path, while the others are below it for the most part, or going the wrong direction.
171 19/32=(171×32+19)/32=(odd number)/32.
But 32=2⁵
Thus, this ratio cannot be simplified, because the numerator is an odd number.
And the denominator is a power of 2.