Answer:
= 3n + 1 , n≥ 1
Step-by-step explanation:
The common difference of the sequence = 3 , so it is an arithmetic sequence.
The formula for the nth term of an arithmetic sequence is given as:
= a + (n-1)d
substituting the values of a and d , we have
= 4 + (n-1) X 3
= 4 + 3n - 3
= 1 + 3n
= 3n + 1 , n≥ 1
Answer:
20 students
Step-by-step explanation:
Turn 28 into an improper fraction. Multiply 28 by 5 and multiply 7 by 1. You will have 140/7, which equals 20.
Answer:
11.6 km²
Step-by-step explanation:
- Divided it into two shapes, a triangle and a rectangle. Then find the area for each. The triangle is 4 km long and 2.2 km wide. The rectangle is 1.8 km wide and 4 km long.
- Solve the area for the triangle. The equation l · w ÷ 2=A will help. So, the equation would be 4 · 2.2 ÷ 2=4.4
- Then, solve the area for the rectangle by using the equation l · w=A. 1.8 · 4=7.2
- Add them together. 4.4+7.2=11.6
- Final answer - 11.6 km²
Answer:
9.4 or 9.39454618611
Step-by-step explanation:
You use sin of 40 degrees which equals 7 over x, so you do 7 divided by sin of 40 in your calculator. I hope this is right let me know if you are suppose to solve this problem a different way I used trigonometry.
Answer:
4.532, 5.324, 45.32, 54.32
Step-by-step explanation:
Ascending order: arranged in a series that begins with the least or smallest and ends with the greatest or largest