1) Painting on a Wall:<span> Painters use ladders to paint on high buildings and often use the help of Pythagoras' theorem to complete their work. The painter needs to determine how tall a ladder needs to be in order to safely place the base away from the wall so it won't tip over. In this case the ladder itself will be the hypotenuse. Take for example a painter who has to paint a wall which is about 3 m high. The painter has to put the base of the ladder 2 m away from the wall to ensure it won't tip. What will be the length of the ladder required by the painter to complete his work?
2) you need to come up with a drawing for it.
3)</span>You can calculate it using Pythagoras' theorem:
(5)<span>2 </span>+ (2)2 =
25 + 4 = C2
√100 = C
5.3 m. = C
Thus, the painter will need a ladder about 5 meters high.
hope this helps you

Example:
5w - five apples
8 - eight strawberries
5w + 8 = (five apples) + (eight strawberries) = 13 of what?
You can add only numbers of the same fruits.
Answer:
E. All of the above statements about z-score are true.
Step-by-step explanation:
The z score basically tells us that how standard deviation units far our observation fall from the mean value of the data we have which may be positive or negative which further means that our option C and D are correct as they are indicating the direction of our observation falls away from mean.
Now I will show how the mean and standard deviation of z-score is 0 and 1 respectively.
Consider value of variable X from population be {4,8}.
Now the mean of X will be,
=
where N= 2
so mean =
=6
Standard deviation formula =
=
= 2
The z -score has a formula z = 
so z 1 =
= -2
z 2 =
=2
Now to calculate mean of z score =
= 0
Standard deviation of z score =
= 1
Hence our option A and B are also correct.