Answer: The simplified expression is -1cdf^2-3cd-4d-4
Step-by-step explanation:
Both because they are all the same triangle
Short answer C
Comment
How to explain this is not simple. There are all kinds of ways of dealing with it.
One fact is that Sin(A) = Cos (90 - A). But you may not have had that yet.
An easier way is just to use side notation.
The sin of an acute angle in a right triangle is the Opposite over the hypotenuse.
In this case, Sin(A) = o/h = BC / AB which you were told was 24/25
Now look at the Cosine of B
It's definition is Adjacent / hypotenuse
Cos(B) = a/h = 24/25
Answer
Sin(A) = Cos(B) or
C <<<< answer
Given :
12 foot tall street light is making a 18 foot shadow at the same time a nearby building is making a 72 feet shadow.
To Find :
How tall is the building.
Solution :
Since, the time period is same so the angle angle of elevation is equal i.e the ratio of height of building is equal to height of shadow.
Let, height of building is h feet.
So,
Therefore, height of building is 48 feet.
Hence, this is the required solution.
Answer:
E. Length and frequency of the commercial.
Remaining Details of the Question:
A study investigated the effect of the length and the repetition of TV advertisements on students' desire to eat at a Sub-U-Like sandwich franchise. Sixty students watched a 50- minute television program that showed at least one commercial for Sub-U-Like during advertisement breaks. Some students saw a 30-second commerical, some saw a 60-second commercial, others a 90-second commerical. The same commerical was shown one, three, or five times during the program. After the viewing, each student was asked to rate their craving for a Sub-U-Like sandwich from the set ("Don't want to eat", "Neutral", "Want to eat"}
Explanation:
During the course of an experimental study, it is important to identify the variables of interest. These variables are referred to as the factors. Factors are controlled independent variables in an experimental study that can be manipulated by the experimenter.
In this case, it was indicated that the study investigated the effect of the length and the repetition of TV advertisements on students' desire to eat at a Sub-U-Like sandwich franchise. Therefore, the factors in the "Sub-U-Like" study are length and frequency of the commercial.
