10......................:)
Answer:
x ≥ −5 and x < 4
Step-by-step explanation:
-4x + 1 ≤ 21 and 5x + 2 < 22
5x + 2 < 22 =<u> x < 4</u>
We can plug it in: 5 x 3 + 2 < 22 = <u>17 < 22</u>
-4x + 1 ≤ 21 = x= -5 and lower
Plug it in: -4 x -5 + 1 ≤ 21 = 21 ≤ 21 = <u>x ≥−5</u>
So both answers would be:
x ≥−5 for -4x + 1 ≥ 21
x < 4 for 5x + 2 < 22
Answer:
C
Step-by-step explanation:
A&B are wrong because they imply that x can equal 250, which it can't, it has to be less than 250 so the max x can be is 249.
D is wrong because it is talking about greater than which it is not. It is less than
C is correct
Answer:
150
Step-by-step explanation:
1:30=5:x
5*30=150
5:150=1:30
Use the rules of indices
When they are dividing we subtract the exponents provided the bases are the same.
Since the bases are the same,
(2/3)^5 ÷ (2/3)¹
Will be
(2/3)^5-1
= (2/3)⁴
= 16/81
Hope this helps.
