Answer:
a=-4000m+39000
Step-by-step explanation:
From the given table, we can see that the difference between any consecutive altitude is 4000 ft.
31000 - 35000 = -4000
27000- 31000 = -4000
23000-27000 = -4000
Hence, it represents an arithmetic sequence with a = 3500 and d = -4000
The general term of an arithmetic sequence is given by

Answer:
it is one
Step-by-step explanation:
Try this option ↓
Step-by-step explanation:
1) according to the condition two angles are equal, then two sides are equal also, it means
2) √x+4=√(5x+4);
3) the 'x' can be calculated if to solve this equation:
;



4) finally, answer: 9.
Answer:
2. quadrant 4
3. quadrant 2
4. quadrant 3
Step-by-step explanation:
You can refer to the picture.
2. Since
less than 0 which means
is negative,
less than 0 which means
is negative.
So, the angle lies in quadrant 4 (Cos quadrant)
3. Since
less than 0 which means
is negative,
less than 0 which means
is negative.
So, the angle lies in quadrant 2 (Sin quadrant)
4. Since
more than 0 which means
is positive,
less than 0 which means
is negative.
So, the angle lies in quadrant 3 (tan quadrant)