10 divided by 2 is 5, 5 + 8 is 13
thus f(10)= 13
hope this helps
Let n be a number of balls: n = 14
In one pan you have 8 balls: 8n
In the other pan you have the rest of balls (14 - 8 = 6) along with a <span>weight of 20 grams = 6n + 20
So the pans are balanced:
8n = 6n + 20
Now, just solve the equation:
8n - 6n = 20
2n = 20
n = 20/2
n = 10
So, you know that a ball weights 10 grams.</span>
5/7 ÷ 1/3 = 5/7 × 3/1 = 15/7
-15 is already rational itself, but it as a fraction:
-15/1
Answer:
I think it's 9.
Step-by-step explanation:
50% of 18 is 9.
40% of 25 is 10 if that helps you.
I don't know if I'm correct but this might help you
