Answer:
$16,700
Step-by-step explanation:
Subtract: 38428
<u>-21728</u>
16700
You will need to add 10 to the hundred's place by subtracting 1 from the thousandth's place: 37,4(+10)28. Then you subtract as usual.
Answer:
The population density is 0.364 fish per gallon.
Step-by-step explanation:
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:
The population density is 0.364 fish per gallon.
Answer:
(y - 3)(y + 1)
Step-by-step explanation:
Given
(y - 1)² - 4 ← this is a difference of squares and factors in general as
a² - b² = (a - b)(a + b), thus
(y - 1)² - 4
= (y - 1)² - 2²
= (y - 1 - 2)(y - 1 + 2)
= (y - 3)(y + 1) ← in factored form