Answer:point A the center of dilation
Step-by-step explanation:
Point scale factor of the dilation 4/. 3
Answer:

Step-by-step explanation:
#We use the base diagonal and the height diagonal to calculate the beam's height:

#The volume of the beam can then be calculated as:

Hence, the beam's volume is 
Answer:
-22/15
Step-by-step explanation:
Okay, so, find a common multiple of 3 and 5. best way to find one is to multiply them. 3 x 5= 15. Now you have to make the numerators equivalent.
-2/3 = -10/15
-4/5 = -12/15
-10+-12=-22
Answer:-22/15
23 is the minimum because 155 does not go into evenly and you have to have enough room for everybody, and make sure not to leave anybody out. 155 divided by 7 is 22.1428571429, you have to round it up to 23 so that everybody has a seat. Hope it helps!!