Repetition is a guaranteed way to learn something. If it is a formula you need to learn, try doing flashcards and reading it over and over again until you can spell it without the flahcard. If it is something like factoring, just do a bunch of factoring problems until you get the feel of it.
Answer:
The second function represents an even function.
Step-by-step explanation:
A function g(x) is said to be even if g(x) = g(-x). All that is needed is to replace x with -x in each equation, simply it and assess whether the equation remains unchanged. If the equation is identical to the original one then it is said to be even.
Answer:
W' = 54.4 pounds
Step-by-step explanation:
Given that,
The weight of a bag of books = 40 pounds
After picking up some books at school, the weight has increased by 36%.
We need to find the weight of the bag now. Let the new weight is W'.
So,
W' = 40 +36% of 40
i.e.
So, the new weight of the bag is equal to 54.4 pounds.
When
, you have
Now assume this is true for
, i.e.
and under this hypothesis show that it's also true for
. You have
In other words, there exists
such that
Rewriting, you have
and this is equivalent to
modulo 9, as desired.
So, first let's convert 3 minutes into seconds. We get that 3 min = 180 seconds.
Now, it says that the treasure sinks 20 feet per second and we want to know if it will reach -4,200 feet before 180 seconds. So, one way we can solve that it multiply 180 times 20.
We get 3,600 which means that in 3 minutes, the treasure will be -3,600 feet deep. The treasure will NOT reach the ocean floor in less than 3 minutes.
Hope this helps!