40/60= 0.67 (i.e. 2/3)= about 66.67%
Many numbers, when multiplied by
![7](https://tex.z-dn.net/?f=7)
, are less than
![49](https://tex.z-dn.net/?f=49)
. We can find an inequality for numbers
![x](https://tex.z-dn.net/?f=x)
that are sufficient.
Clearly,
![7x < 49](https://tex.z-dn.net/?f=7x%20%3C%2049)
is the desired inequality. We divide by 7 to find that
![x < 7](https://tex.z-dn.net/?f=x%20%3C%207)
determines working numbers.
Answer:
B and D
Step-by-step explanation:
Answer:
D. -x2 + 2x -3
Step-by-step explanation:
the first step is we open all the brackets then it will be :
x2 - 3x - 2x2 + 5x - 3
= x2 - 2x2 - 3x + 5x - 3
= -x2 + 2x -3