Answer:
16
Step-by-step explanation:
-23, -20, -16, -10, -1, -1, 0, 0, 7, 10, 10, 11, 15, 16, 16, 17, 17, 17, 17, 19, 19, 22, 22, 24, 25, 25, 29, 35
The population density is 0.364 fish per gallon.
The population density can be defined as the number of individuals (in this case, small tropical fish) per unit of area or volume. In this case, the volume of the aquarium (55 gallon).
The density can be calculated then as:
<u>Apply distributive law: </u>
<u>OAmalOHopeO</u>
a) Area of rhombus = ½ * (diagonal1)*(diagonal 2)
Let diagonal (D2 )= longer diagonal = 15 and diagonal (D1) = shorter diagonal
90 = ½ (D1)*15
90 = 7.5 D1
Now divide both side by 7.5
90/7.5 = d1
D1= 12 units.
b) Area of rhombus = ½ * (diagonal1)*(diagonal 2)
Let the ratio be
Diagonal 1=
Diagonal 2=
147 = ½ *
Multiply both side by 2
294 =
294 = 6
Divide both side by 6
294/6 = 6/6
49 =
= 7 unit
rounding to nearest 10 to any number follow these rules
1. if number ends 0 , 1 , 2 ,3 4 , 5 take number down to nearset multiple of 10
2. if number ends with above 5 take the upper number multiple of 10
so here
413 + 35.6 + 998.5 + 376 + 85.3
= 410 + 40 + 1000+ 380 + 90
= 1920