This may help you
You need to calculate the z-scores for (3.0 - 1.7) years and (3.0 + 1.7) years.
Then you use a standard normal distribution table to calculate the required probability.
The formula for finding the z-score is
<span>z=<span><span>X−μ</span>σ</span></span>
The total number of horses in the field and the total number of cows in the field are the unknowns
Answer:
15
Step-by-step explanation:
Using pythagoras theorem
The answer is 1/3 because there is 1 yellow and 3 purple tiles.
Answer:
width= 14
Step-by-step explanation:
Play around with numbers, i used 4, then 6, then 5 for the length. 5 is correct, do 5*2=10+4=14; 14*2+5*2= 28+10= 38
Therefore, the width of the rectangle is 14.