V = 1/3 x B x H
= B = L x W
= V = 1/3 (L x W) H
= V = 1/3 ( 7 x 3 ) 8
= V = 1/3 (21) 8
= V = 1/3 (168 )
= V = 168/3
= V = 56in
Volume = 56!
Answer:
x = −6
Explanation:
5x + 7y = -23
Y = -2x - 11
Substitute -2x - 11 for y in 5x + 7y = -23
5x + 7(−2x − 11) = −23
Simplify both sides of the equation
5x + 7(−2x − 11) = −23
5x + (7)(−2x ) + (7)(−11) = −23 (Distribute)
5x + −14x + −77 = −23
(5x + −14x) + (−77) = −23 (Combine Like Terms)
−9x + −77 = −23
−9x − 77 = −23
Add 77 to both sides
−9x − 77 + 77 = −23 + 77
−9x = 54
Divide both sides by -9
−9x / -9 = 54 / -9
x = -6
I believe he will work about 3 shifts. The answer I got was 3 1/4 shifts to get exactly 2.5 hours.
Answer:
−
21
x
+
28
, 7
, 3
x
−
4
, −
7
(
3
x
−
4
)
, −
7
,
3
x
+
4
, −
(
21
x
−
4
)
Step-by-step explanation:
too much to explain sorry
Hope this helped!
