Answer:
x = 5
Step-by-step explanation:
Corresponding sides are proportional, so we can write the proportion ...
(x -2)/x = (x +1)/(x +5)
(x -2)(x +5) = x(x +1) . . . . . . . multiply by x(x+5)
x^2+3x -10 = x^2 +x . . . . . eliminate parentheses
2x = 10 . . . . . . . . . . . . . . subtract x^2+x-10
x = 5 . . . . . . . . . . . . . . divide by 2
The answer is x <span> ≤ 6, i think</span>
To work out the Circumference of a circle, we must o the calculation
πd
π x d
If we fill in the information we know
π x 10.4
3.14 x 10.4 (to 2 d.p.)
↓
32.656 (units)
Answer:
23.31
Step-by-step explanation:
There are 24 possible answers, 6 are correct answers and 18 are incorrect answers. By use of the hypergeometric distribution the probabilities of each possible number of randomly selected correct answers can be found, as follows:
P(0) = 0.1379, P(1) = 0.3819, P(2) = 0.341, P(3) = 0.1213, P(4) = 0.017, P(5) = 0.0008, P(6) = 0.000007.
The expected or mean number of correct answers is found from:
The answer is: 1.4998