1.3 is the correct answer to your question
Answer:
y = 17
Step-by-step explanation:
We have five values : 2 , 5 , 7 , y , 9
and the mean = 8
this means :

Verification: (2+5+7+17+9)÷5 = 8
20/4.... 5cm is ur answer
The formula for the volume of a prism is V=Bh, where B is the base area and h is the height.The base of the prism is a rectangle.The length of a rectangle is 9cm and the width is 7cm.
3a^2 * 2a^3 = 6a^5
because 3 x 2 = 6.....and a^2 * a^3 = a^(2 + 3) = a^5
put it all together and u get 6a^5