Answer:
<u>We observe that this is a GP with:</u>
- the first term t₁ = 5
- common ratio r = -2
<u>The nth term is:</u>
If 14 of the 50 fish were trout, we can write this as a fraction; 14/50.
To get this into an easier-to-understand form, we can multiply both sides by 2, giving us a fraction of 28/100. This means that 28 out of 100, or 28% of fish, will be trouts, at least for a rough expectation.
From there, we can multiply 28%, the percentage of trout, by 7,500, the total amount of fish in the lake.
7,500 x 28% = 2,100
Therefore, we can roughly expect about 2,100 of the fish in the lake to be trout.
Hope this helps! :)
Answer:
(x - 3)² + (y + 5)² = 10
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Here (h, k) = (3, - 5 ) , then
(x - 3)² + (y - (- 5) )² = r² , that is
(x - 3)² + (y + 5)² = r²
r is the distance from the centre to a point on the line
Calculate r using the distance formula
r =
with (x₁, y₁ ) = (3, - 5) and (x₂, y₂ ) = (6, - 4)
r =
=
=
= ⇒ r² = ( )² = 10
(x - 3)² + (y + 5)² = 10 ← equation of circle
Is there a pic for the problem ?
Answer:
- 4.5x + 4.7
Step-by-step explanation:
(2.5x - 5) - (7x - 9.7)
2.5x - 5 - 7x + 9.7
2.5x - 7x + 4.7
- 4.5x + 4.7