2 movies
4 hours - .5 popcorn -1.75-1.75=0
Easier terms 4 hours minus 30 min is 3 hours and 30 min left each movie is 1 hour and 45 min plus 1 hour 45 min i that's 2 hours and 90 min 90 min are one hour and 30 min. So 2 hours plus one hour and 30 min is the 3 hours and 30 min are we're left
Answer:
x =5 ±sqrt( 31)
Step-by-step explanation:
x² + 10x = 6
b = 10
Take b/2 and square it
(10/2) = 5 5^2 = 25
Add 25 to each side
x² + 10x+25 = 6+25
The left side will be (x+b/2)^2
(x+5)^2 = 31
Take the square root of each side
sqrt((x+5)^2) = ±sqrt( 31)
x+5 = ±sqrt( 31)
Subtract 5 from each side
x+5-5 = -5 ±sqrt( 31)
x =5 ±sqrt( 31)
Answer:
a- (x-7)(x+9) | b- 193*207 | c- 242*258
Step-by-step explanation:
a)
x^2+2x-63.
the middle number is <em>2 </em>and the last number is <em>-63</em>.
You would have 2 numbers that add to 2 and multiply to -63.
Those numbers are -7 and 9.
so (x-7)(x+9).
b)
((200)-7)((200)+9)
(193)(209).
You can check this by multiplying 193 by 209 and then doing (200)^2+2(200)-63. Both would equal 40337.
c)
2(x-7)+2(x+9)=1000
(2x-14)+(2x+18)=1000
4x+4=1000
4x=996
x=249.
((249)-7)((249)+9)
(242)(258)
C. The horizontal distance is 11