Answer:
12 sweaters
Step-by-step explanation:
So the proportion is 5:2, so we can write is as 30:12.
Answer:
m = 2k/v²
Step-by-step explanation:
I think you mean solve for m, not k
Multiply both sides of the equation by 2
2 * 1/2 *(mv²) = 2 * k
Rewrite the expression.
1*(mv²) = 2*k
Multiply mv² by 1
mv² = 2*k
Divide each term by v² and simplify
mv²/v² = 2k/v²
mv²/v² cancel out and you get
m = 2k/v²
Answer:
Step-by-step explanation:
The position function is
and if we are looking for the time(s) that the ball is 10 feet above the surface of the moon, we sub in a 10 for s(t) and solve for t:
and
and factor that however you are currently factoring quadratics in class to get
t = .07 sec and t = 18.45 sec
There are 2 times that the ball passes 10 feet above the surface of the moon, once going up (.07 sec) and then again coming down (18.45 sec).
For part B, we are looking for the time that the ball lands on the surface of the moon. Set the height equal to 0 because the height of something ON the ground is 0:
and factor that to get
t = -.129 sec and t = 18.65 sec
Since time can NEVER be negative, we know that it takes 18.65 seconds after launch for the ball to land on the surface of the moon.
5 is the answer to the problem
Area of a parallelogram is A = base times height
Area = 15 * 13 = 195
So, your answer is 195 cm squared
:)))