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thank you!

1. arc BCD is 80 degrees.

2. T1T2 = (x + y)/xy

3. PO1 = 3.

4. arc AE is 65 degrees.

people are saying the μmg = ma. Why the h**l is the ma there?? The force of friction doesn't fucking equal the net force!!

If the question only gives you two pieces of information, you can try using variables to sub for the other variables you'll need to solve for the question. Most likely, the variables will cancel out, leaving you with the answer.

mass = 0.25 kg

initial velocity = v_i = 6 m/s

coefficient of kinetic friction = mu_k = 0.1

final velocity = v_f = 0 m/s

distance = d = ?

There are three forces acting on the puck (friction, gravity, normal force) Gravity and normal force cancel each other out, so we can ignore that for now. 

Friction acts in the -x direction.

F_n = mg = (0.25 kg)(9.8 m/s^2) = 2.45 N

F_f = (mu_k) * (F_n) = (0.1) * (2.45) = 0.245 N

F = ma    ==>    a = F/ m = (0.245 N) / (0.25 kg) = 0.98 m/s^2

Finally, we use kinematics.

(v_f)^2 = (v_i)^2 + 2ad

0 = (6^2) + 2(0.98)d

d = 18.367 m

My physics is a bit rusty so this is the best I can come up with.

x = 2 ==> every value of x^y is positive             {1/4, 1/2, 1, 2, 4}

x = 1 ==> every value of x^y is positive              {1}

x = -1 ==> x^y is positive if y is even                {-1, 1}

There are 5 distinct values of x^y: 1/4, 1/2, 1, 2, 4

Some methods are certainly better than others.

(Both good and bad methods should lead to the correct answer.)

Have you looked at the earlier answers ?

From what you typed, maybe this is what you mean.

\(\sqrt[3]{8x} = 2 \sqrt[3]{x}\)

Use the Pythagorean Theorem.

Yes, there are diagonal squares  (hence the total squares 55)

   and I suppose these  2 x 2   and 3 x 3  squares ARE a different size    

so   SIX different sizes ya think ?

Oops, my bad, but it's great that you got the answer.  :))

=^._.^=

Oh, my bad, but there's also diagonal squares. 

=^._.^=

1st   stage      2 players notified

2nd stage       4 more players notified     total  6

3rd stage       8 more                               total  14

4th stage       16 more                             total 30

5th stage       32 more                             total > 50         5 stages needed

This is an exponential function

\(2^x = 50\)

\(x = \log_2{50} = 5.643\)

It takes 5 stages to notify all the players.

-b/2a   will be the 'x' value        a = 1    b = -19

use this value in the equation to calculate the 'y' value of the vertex .....

Oops, my bad. Your answer is correct.

Volume of a cone = 1/3 pi  r^2 h   

                             = 1/3 pi (2.5)² (10)                  note that 2.5  is the RADIUS

                              =~ 65.4 cm³   of ice cream

\((8 \%)(75) = \frac{8}{100}(75) = \boxed{6}\) 3 pointers

Count the probability that she delivers all the letters incorrectly. This is the number of derangements of 5, which is 44.

Probability: 1 - 44/120 = 19/30

Hmmmm.... shouldn't that be ?

1 - (5/6)³ =  11/36   

simple interest, or compounded interest?

The question asks for the number of different sizes.....not the number of squares

2 x2

3x3

4x4

5x5

four different sizes

The answer is supposted to be 8.

You're welcome ! 

6930 / 9 = 770 m/hr

6060/6 = 1010 m/hr

jet speed in still air is the average  = 890 m/hr

   wind speed is diff between this speed and one of the above speeds =  120 m/hr