Answer:
Part 1)
Part 2)
Step-by-step explanation:
<u><em>Analize two problems</em></u>
Part 1) If y varies directly with x, and If y=-8 and x= -3 what’s x when y= 6
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
step 1
Find the value of the constant of proportionality k
For x=-3, y=-8
substitute the given values
step 2
Find the linear equation
step 3
Find the value of x when y=6
substitute the value of y in the linear equation
solve for x
simplify
Part 2) If y varies inversely with x, and If y=-8 and x= -3 what’s x when y= 6
we know that
A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form or
step 1
Find the value of the constant of proportionality k
For x=-3, y=-8
substitute the given values
step 2
Find the equation
step 3
Find the value of x when y=6
substitute the value of y in the equation
solve for x
The answer is d (fohog)= 4x-5/4x-9
Since the ratio of students with green eyes to students with blue eyes in the graph is 20/10, we can see that there is 1 blue eyed student for every green eyed student. Meaning that there will be half as many blue eyed students as green eyed students. So if there are 300 students we know that there will be 150 blue eyed students.
Answer:
Yes, the sample closely estimates the percentage of students in the school.
Step-by-step explanation:
Given that:
Percentage of students in school who own a bike = 80%
Ratio of students who own a bike to students who do not own a bike = 8 : 2
To find:
Whether the sample closely estimates the percentage of students who own a bike ?
Solution:
First of all, let us convert the ratio in percentage form.
Percentage formula is given as follows:
Here,the ratio given is 8:2.
Let number of students who ride bike =
Let number of students who do not ride bike =
Total number of students =
So, the percentage of students who ride a bike:
So, the sample percentage is equal to the percentage of students in school who own a bike.
Therefore, <em>the sample closely estimates the percentage of students who own a bike</em>.
Answer:
Step-by-step explanation:
it would be -2 ;)