The answer is the first one
Answer:
It is not a normal distribution but an uniform distribution
Step-by-step explanation:
A uniform distribution is one in which all values are equally likely within a range, therefore in lottery drawings, any of the numbers are likely to appear, however a normal distribution the values are likely to cluster around the mean, or average. Meaning that numbers far away from the mean won't appear that often, however, in lottery drawings, this normal distribution doesn't happen.
1) Tan45 = 1
2) Sin70 = 0.9397
3) Cos30 = 0.8660
4) Cos20 = 0.9397
Answer:
The student took the numbers for the factors 5, -4 for the zeros instead of solving the equation
The zeros are -5, 4
Step-by-step explanation:
x^2 +x - 20=0
What 2 number multiply to -20 and add to 1
5*-4 = -20
5+-4 = 1
(x+5)(x-4) =0
Using the zero product property
x+5 = 0 x-4 =0
x=-5 x=4
