Answer:
Step-by-step explanation:
Given that,
The surface of the ramp will be 7 feet long with a total rise of 2 feet.
We need to find the angle of elevation of the ramp. We can use trigonometry to find it such that,
P is perpendicular
H is hypotenuse
Here, P = 2 feet, H = 7 feet
So,
So, the angle of elevation of the ramp is equal to 
.
You will combine like terms and simplify to get x= -50.91
Answer: A
Step-by-step explanation:
A rational number is a number that can be made by dividing two integers. An integer is a number that doesn't have a fraction part.
1. 2.4 - rational
2. 74 - rational
3. 17.3333333… - rational
4. π -irrational
5. there is no number
6. –18 - rational
7. there is no number
8. 87.125 - rational
9. –30 - rational
10. –8.3 -rational
11. 58.25 -rational
12. 121 -rational
13. 4.5 -rational
14. 3 7/10 -rational
As you can see, most numbers are rational. But, when you come across pi or when you have a decimal that goes on forever without repeating (like some square roots), it tends to be irrational.
