The 40th parallel of north latitude runs across the United States through Philadelphia, Indianapolis, and
Denver. At this latitude, Earth's radius is about 3030 miles. The earth rotates with an angular velocity of
- radians (or 15%) per hour toward the east.
12
If a jet flies due west with the same angular velocity relative to the ground at the equinox, the sun as
viewed from the jet will stop in the sky. How fast in miles per hour would the jet have to travel west at the
40th parallel for this to happen? Round your answer to the nearest whole number.

it could 14.28 but if its not that one then it has to be the 17 one. hope this ! : )

step-by-step explanation:

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.

7

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -