The mean game scores and standard deviations of four seasons of a football team are given below.
Season
2005
2006
2007
2008
Mean
19
21
12
2 9
Standard Deviation
3.5
.8
1.0
4.0
Which statement must be true?
The game scores of season 2006 have a greater spread than the game scores of season 2008.
The game scores of season 2007 have a greater spread than the game scores of season 2005.
The game scores of season 2006 have a greater spread than the game scores of season 2005.
The game scores of season 2005 have a greater spread than the game scores of season 2006.

a

step-by-step explanation:

the answer is a

2 & 7

step-by-step explanation:

he climbs 300 ft/hr at a constant rate. the peak is at 1,500 ft.

when going up, he reaches 600 ft in 2 hours. remember, that he is going in a constant rate. divide 600 with 300:

600/300 = 2

assuming that he takes the same route back (meaning that it's a 1500 ft route back, you can solve.

note also that you are solving when he gets back to 600 ft after he reaches the peak.

first, find the amount of hours it takes to get up the peak. divide the total amount (1500), with the ft/her (300) to get the amount of hours (x):

1500/300 = x

x = 5

it takes jamie 5 hours to get up. now, he is returning down, and reaches 600 (his current destination). remember that he climbs at a constant 300 ft/hr. divide 600 with 300:

600/300 = x

x = 2

now add the two numbers together.

x = 5 + 2 = 7

jamie takes 7 hours to go up the mountain and reach his current position when descending.

(total amount/constant rate) = (time).

remember that it is a constant rate, so in total, when he gets back down the mountain, it will take the same amount of time as when he goes up. the total amount for the round trip is: 5 + 5 = 10.

~

the first one

step-by-step explanation:

just id the test.

answer:   x*94 +688*6   = 267*100

94x+4128=26700    

94x=22572     /94

x=240.128

step-by-step explanation: mark as brainlest reallly need it thx