=(new-old)/old *100%
=(90-75)/75 *100%
=20%
<span> hope it helps</span>
Actual length / shadow ratio is equal
Let the height of the building be x, then
36/28 = x/70
x = (36 x 70)/28 = 2,520/28 = 90.
Therefore, the height of the building is 90 feet.
Answer: 1000
Step-by-step explanation:
Well, what times thirty will equal 30,000
30*x=30000
x=1000
You can also figure this out by seeing how many zeros were added to 30,000.
If you found this helpful, please, if you do not mind giving me brainliest! Thanks! :)
Answer:
Option D. It's a perfect square trinomial.
Step-by-step explanation:
(a) 36x² - 4x + 16
= (6x)² - 2(2x) + (4)²
It's not a perfect square trinomial
(b) 16x² - 8x + 36
= (4x)² - 2x(4x) + (6)²
It's not a perfect square trinomial
(c) 25x² + 9x + 4
= (5x)² + 2
+ (2)²
It's not a perfect square trinomial
(d) 4x² + 20x + 25
= (2x)² + 2(10x) + (5)²
= (2x+5)²
It's a perfect square trinomial.