Answer:

Step-by-step explanation:
The first step to solving this problem is verifying if this sequence is an arithmetic sequence or a geometric sequence.
This sequence is arithmetic if:

We have that:




This is not an arithmetic sequence.
This sequence is geometric if:




This is a geometric sequence, in which:
The first term is 40, so 
The common ratio is
, so
.
We have that:

The 10th term is
. So:



Simplifying by 4, we have:

Step-by-step explanation:
4(3x-2) + 6x(2-1)
10x + 11x
21x
23 mm, 20mm, 13mm sides: No equal sides and No equal angles are characteristics of a Scalene Triangle.
62,72,46 angles : All angles are less than 90°, this means that the triangle is an acute triangle.
Based on the above information the triangle is an ACUTE SCALENE TRIANGLE.
Answer:
Volume = -3x + 27
A 27 gal. tank is drained at a rate of 3 gallons per minute. 27/3 =9. It will be empty in 9 minutes.
1<= x <= 9
Step-by-step explanation: