Nancy has a freshwater aquarium at home. she buys goldfish four more than twice the number of platies she bought last sunday. she also buys 2 black mollies and a few guppies that amounted to one quarter of the total number of goldfish she bought. if there are 35 fish in all, how many goldfish did she buy?

Let the number of goldfish be = x

Let the number of platies be = y

As given, she buys goldfish four more than twice the number of platies

So, equation is or

Number of black mollies = 2

Let the number of guppies be = g

As given, a few guppies that amounted to one quarter of the total number of goldfish she bought.

Now given is that the total number of fish is = 35

So, x+y+2+g=35

So substituting values in terms of x

Hence, the number of goldfish Nancy bought are 20.

If we want to find platies, then y=

And guppies are 1/4 of 20, so

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.