add the like terms
14x=-3+x
subtract x from both sides
13x=-3
divide both sides by 13
x=-3/13
The problem is that 7^2 is 7*7, and the same for 8^2. The right answer is the square root of 15, or 3.87
Answer:
1. 25%
2. 150%
3. 3%
4. 75%
5. 60%
6. 210%
7. 10%
8. 1%
9. 40%
10. 87.5
11. 105%
12. 2%
Step-by-step explanation:
The volumetric mean radius of Mars is about 3389.5 km. We know that it's 13.7% of Neptune's mean radius, so we can write it down as:
3389.5 = 13.7% of x (where x is Neptune's radius)
3389.5 = 13.7% x
3389.5 = 137/1000x / * 1000 (both sides)
3389500 = 137x / ÷ 137 (both sides)
x = 24740.87591240876
x ≈ 24740.88
Answer: The mean radius of Neptune is about 24740.88 km.
Answer: 24
Step-by-step explanation:
m - 15 + 15 = 9 + 15
m = 24
