Answer:
Step-by-step explanation:
y=-1
Answer:
Step-by-step explanation:
Let x be height of the shadow
30/15 = 90/x
Do cross multiplication
30x =1350
x = 45
Let h= height of the screen
1/4 of 45 is 11.25
H = 11.25 + 45
H= 56.25
There's your answer. I hope I did it right.