Answer:
6227020800
Step-by-step explanation:
There are 13 ways to choose the first person in the first group, 12 ways to choose the second person in the first group and so on until we get 1 way to choose the second person in the last group so the answer is 13 * 12 * 11 * ... * 3 * 2 * 1 = 13! = 6227020800.
E) 2sin0 is the answer ^.^
The number is -10.
Explanation:
3x + 5 = -25
3x = -30
x = -10
If we distributed through the parenthesis we would have
. That's choice 2 above. Next thing we could do is to put this into a form that is close to standard form. That means that we lose the denominator of 3 by multiplying everything by 3 to get 3y = -5x + 10, I believe maybe you meant choice 3 to have an x in it. If so, choice 3 works too. Then we will put it into legit standard form and get 5x + 3y = 10, last choice above.
Answer:
5.625 m/s²
Step-by-step explanation:
Intial velocity of car, u = 54 km/h = 54 × 5/18 m/s
u = 15 m/s
Car stops on applying brakes 20m
Displacement is covered by car ,S = 20m
finally car stops ∴ final velocity of car , v = 0
Now, use formula
V² = u² + 2aS , here a is Acceleration
⇒ 0 = (15)² + 2 × a × 20
⇒ -225 = 40a
⇒ a = -5.625 m/s² [ here negative sign shows that acceleration is opposite direction of motion of car ]
Hence, magnitude of acceleration = 5.625 m/s²