A construction worker dropped a hammer while working on a skyscraper, 1088 feet above the ground. Use the formula t = √ h 4 to find how many seconds it took for the hammer to reach the ground. Round to the nearest tenth of a second.

all it means is function 3

40 minutes

step-by-step explanation:

add the time and multiply by 2

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 -