Answer:
Gymnasts always perform on padded mats because
- The padded floor increase the time. The time changes because the padded floor extends the time of the collision. The force is reduced by this time change.
Step-by-step explanation:
- The Impulse Momentum Theorem states that the change in momentum of an object is equal to the impulse applied on it.
J = Δ P ---- (1)
Where J is impulse and Δ P is change in momentum
We also know that impulse is the net force applied on a object which is represented by the following equation:
J = F ΔT
Putting this equation in equation (1), we get:
F ΔT = Δ P
So, this shows when the time is increases then the impulse decreases due to which the gymnasts always perform on padded mats.
The answer would be 2. To find it, you do 8 - 3 - 3 = 2.
Let s be the cost of one shirt and t, the cost of 1 tie
Then:
(a) 3.s + 5.t = 60
(b) 2.s + 3.t = 39
Solve this equation by elimination:
<span> Let's eliminate t. To that end you multiply all the terms of (a) by negative 3 and all the terms of (b) by positive 5
</span>(a) 3.s + 5.t = 60→→ (-3).(3.s+5.t) → - 9.s - 15.t = -180(c)
(b) 2.s + 3.t = 39→→ (+5).(2.s+3.t) → +10.s + 15.t = 195 (d)
Now you add (c) + (d) → s= $15 , This is the cost of 1 shirt. To find the cost of 1 tie, you replace s by 5 in any of the equation, say (b):
(b) <span>2.s + 3.t = 39 </span>→ 2.(15) + 3t = 39 → 30+3t = 39 and 3t =39-30 = 9
So 3t = 9 and t = $3 (price of 1 tie)
Answer:
16
Step-by-step explanation:
5/8 of 48 = 30
8/15 x 30 = 16
Answer:192 r 9
Step-by-step explanation: