What is a recursive rule for 320, 80, 20, 5, 1.25,
1 answer:
Answer:
see explanation
Step-by-step explanation:
Note there is a common ratio r between consecutive terms in the sequence, that is
r = 80 ÷ 320 = 20 ÷ 80 = 5 ÷ 20 = 1.25 ÷ 5 = 0.25
Thus the sequence is geometric.
A recursive rule allows a term in the sequence to be found by multiplying the previous term by r, thus
= 0.25
with a₁ = 320
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Answer:
The area in factored form is .
The area in standard form is .
Step-by-step explanation:
The area of a rectangle is length times width.
So the area here is (x+2)(x-5).
They are probably not looking for A=(x+2)(x-5) because it requires too little work.
They probably want A in standard form instead of factored form.
Let's use foil:
First x(x)=x^2
Outer: x(-5)=-5x
Inner: 2(x)=2x
Last: 2(-5)=-10
---------------------Adding together: .
The area in factored form is .
The area in standard form is .