Answer:
-18/3
Step-by-step explanation:
Answer:
Step-by-step explanation:
200 = 100%
80 = x%
200x = 8000
x = 40% (percentage increase)
400 = 200%
100 = 50%
500 = 200% + 50%
500 = 250% (the other percentage increase)
Answer:

Step-by-step explanation:
Given

Required
Select an equivalent expression
To solve this question, we apply the following law of indices:

Similarly:


D. is correct
Answer:
53
Step-by-step explanation:
106 miles per hour would get him home in 1 hour but it takes 2 hours so you can divide 106 by 2 to 53 miles per hour.
Answer:
Step-by-step explanation:
121b^4 - 49 is a "difference of squares."
Formula for factoring a "difference of squares:"
a² - b² = (a - b)(a + b)
So: rewrite your 121b4 - 49 as 11²b^4 - 7² = (11b²)² - 7²
= (11b² - 7)(11b² + 7)
This answer matches the last of the four given answer choices.