Answer:
a = 5
Step-by-step explanation:
Hello, please consider the following.

So, a = 5.
Thank you.
Answer:
0.02386212991
Step-by-step explanation:
1) first you multiply each side by -2
1a) that clears the -1/2
x = -12
A. Hope this helps (give brainliest)
Answer:
Stage crewmember's calculation is incorrect
Correct = 1/16x 1/16y
Step-by-step explanation:
Given that:
Dimension of backdrop : 20 feets long ; 16 feets high
Actual dimension of building : 320 feets long ; 256 feets high
The correct scale factor can be obtained thus :
Ratio of backdrop dimension to the actual dimension of building
Length : 20 / 320 = 1 /16
Height : 16 / 256 = 1/16
Hence, stage crewmember's calculation of (1/20x ; 1/20y) is incorrect.