Answer:
the answer is the letter D
Answer:
1:2
Step-by-step explanation:
since cats is 3 you put 3 and fish is 6 you put 6
it will equal to 3:6 but in the simplest form, its 1:2
Answer:
= - 3
with a₁ = - 0.3
Step-by-step explanation:
The recursive formula for a geometric sequence is of the form
= r
where r is the common ratio
r = 
= 
= - 3 , thus
= - 3 with a₁ = - 0.3
How would I at least start out those two problems?
It looks to me like you already did. Now just follow through with it.
If the length of each side of the frame's inner dimension (i.e. the glass) is x, and the length of each side of the frame's outer dimension is x^2 - 3, then the area of the frame is:
A = (outer dimension)^2 - (inner dimension)^2
27 = (x^2 - 3)^2 - (x)^2
27 = x^4 - 6x^2 + 9 - x^2
27 = x^4 - 7x^2 + 9 <----- This is where you got to already.
0 = x^4 - 7x^2 - 18
0 = (x^2 - 9)(x^2 + 2)
Therefore, either x^2 = 9 or x^2 = -2... and you know it can't be the latter.
Thus, x^2 = 9 and therefore x = 3. The glass is 3" on each side.
<span>Each (outer) side of the frame is x^2 - 3 = 9 - 3 = 6" </span>
The rate that represents this situation would be 50 miles in an hour.
