Complete the chart to find the mean, variance, and standard deviation. Remember to use commas and round numbers to the nearest tenth.

B-R

x

1.45

2.340

x-X

=-357.5

The mean is

2.340

=-62.5

The variance is

3.400

= -2.5

278.5

The standard de 402.5

4.825

77.5563

= 422.5

2X=

x=

(x - x)2 = 310,225.2

You and a friend race across a field to a fence and back. your friend has a 50-meter head start. the equations shown represent you and your friend's distances dd (in meters) from the fence tt seconds after the race begins. find the time at which you catch up to your friend. you: d=∣−5t+100∣d=∣−5t+100∣ your friend: d=∣−313t+50∣∣

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Players on the school soccer team are selling candles to raise money for an upcoming trip. each player has 24 candles to sell. if a player sells 4 candles a profit of$30 is made. if he sells 12 candles a profit of $70 is made