Answer:
B. 1 1/7
Step-by-step explanation:
-9 2/7-(-10 3/7)
=-9 2/7+10 3/7
=1 1/7
Therefore, B. 1 1/7
The index of radical expression is the number indicating which root (square root, cube root, etc.) is meant.
If there's no index on the radical expression, then it's assumed to be square root.
Answer:
Kindly check explanation
Step-by-step explanation:
Given the following :
Number of 8 pounds before boxes to be removed from cargo = b
Weight in pound of crate to be loaded into cargo = 600 pounds
To achieve a balance , no more Than 400 pounds may be taken off the plane
Hence,
Number of pounds removed must not be more than 400 pounds
(8 pounds * b) ≤ 400
8b ≤ 400
Divide both sides by 8
b ≤ 50
Answer:
1. X > 1
Step-by-step explanation:
We know 
because 
. That's why
.
We can now subtract 1 in both sides of the inequality:
.
Factoring 
as a difference of cubes, we get:
.
Thus, we have two factors whose multiplication is positive. Then, both are positive or both are negative. The second case is impossible, because 
can never be positive. The reason is the following:
witch is always positive because 
is a sum of squares, and the squares are always positive.
We conclude that both 
and 
have to be positive, and then 
implies 
