Mean means to average. in order to average, add all the numbers then divide by how many numbers you have.
All these ages add up to 150. because there are 7 ages, divide by 7. this is 21.4 which can be rounded to about 21
46 + 48 + 21 + 12 + 15 + 8 = 150
150 ÷ 7= 21.4285 = 21
Answer:
ok is that it?
Step-by-step explanation:
I believe that it wants you to classify the kind of triangle each triangle is, but I’m not sure.
Let the side length be s. Then sqrt(s^2+s^2) is the length of the diagonal.
sqrt(2s^2) = 4 cm, so 2s^2 = 16 cm, and s^2 = 8, so that s = 2sqrt(2).
The area of this square is s^2, which here is 4(2), or 8 square units (answer)
