Answer: 67 love!
Step-by-step explanation: look at the picture below love!
7(5x+3y=27)
-5(7x+9y=51)
———————
35x+21y=189
-35x-45y=-255
————————
-24y=-66
Y=-66/-24
Y=2.75
——————-
Now replace Y with one of the equations to find x
—————
5x+3(2.75)=27
5x+8.25=27
5x=27-8.25
X=18.75/5
X=3.75
——————
Final answer =
X=3.75
Y=2.75
<span>First of all, if there are at least 70 seats, there must be at least 9 rows. (9*8 =72, which is required to have minimum 70 seats).
And, maximum 150 seats are there, so 150/8 = 18.75, i.e. 18 rows can be there at maximum.
So, the actual number of rows can be between 9 and 18. We can say that possible number of rows can be 9, 10, 11, 12, 13, 14, 15, 16, 17, or 18.</span>
The negative sign is shorthand symbol for "opposite". So the answer is the opposite of -1/3 = 1/3. This is because it is a value of the same distance from zero on a line scale where zero represents the origin. Imagine a horizontal line (as this scale) where the middle of the line is a point equal to zero. This line extends infinitely to the left and infinitely to the right. -1/3 lies to the left of zero a magnitude of 1/3. And positive 1/3 lies to the right of zero the same magnitude but on the opposite side(to the right). Hope that helps.
