Answer:
55°
Step-by-step explanation:
35°+ 90° + ? =180°
? = 180° - 125°
= 55°
Answer:
455
Step-by-step explanation:
multiply the width by the length
Answer:

or

Step-by-step explanation:





Factor.

Extract the square root.

Add 5

or

Answer:
It represents a linear function and there will be 216 ants after 1 year
Answer:
an = 12 -7(n-1)
an = 19-7n
Step-by-step explanation:
The explicit formula for an arithmetic sequence is
an = a1 +d(n-1) where a1 is the first term and d is the common difference
a1 =12
We find d by taking the second term and subtracting the first term
d = 5-12
d = -7
an = 12 -7(n-1)
We can simplify this
an = 12 -7n+7
an = 19-7n