Answer:
yes x=4
Step-by-step explanation:
2/5x -1=9
+1 +1
2(2/5x)=(10)2
5x/5=20/5
X=4
Answer:
13 protons
14 neutrons
13 electrons
Step-by-step explanation:
protons and electrons are mostly always the same
Answer: 15
<u>Step-by-step explanation:</u>
varies directly means: 
Plug in the given values of x and y to solve for k:
→ 7 = k
Next, plug in the k-value of 7 and the given y value of 105 to solve for x:



15 = x
Nina can pick up more weight.
1 ton = 2,000 pounds, so 2000 ÷ 5 = 400 and 500 > 400
Answer:
The child has a greater momentum than the bike.
Step-by-step explanation:
Since mass of child is more than the mass of the bike though they have same velocities.