Can you put an image of the triangle???
(2x-3)²=(2x)²-2*2x*3+3²=4x²-12x+9
In 1 minute, 4 litre water leaves = 4*1000 cubic cm = 4000

so, the height decrease = Volume/area =
hence water level in cm falling per min = 0.318
hence water level in cm falling per hr= 0.318 * 60 = 19.09
Answer:
C
I may be wrong sorry if I am
Answer:
<B=55°, <D=55°
Step-by-step explanation:
in a parallelogram, opposite angles are congruent. so:
3n-5=2n+15
n-5=15
n=20
now that we know n is 20, we can substitute that into either <B or <D to figure out what their measures are (since they are congruent, they'll both have the same angle measure)
m<D=3n-5
m<D=3(20)-5
m<D=60-5
m<D=55
therefore, both <B and <D equal 55°.