Answer:
never learned it sssssooooooorrrrrrrryyyyyyy!!
Step-by-step explanation:
Ratio of chocolate to mix: 3:5
New ratio: x:7
Create a proportion to find the amount of chocolates (x).
3/5=x/7
Cross multiply
21=5x
Divide both sides by 5
4.2=x
4.2 pounds are chocolates.
I hope this helps :)
Answer:
1. Option D is correct.
2. Option B is correct.
3. Option B is correct.
Step-by-step explanation:
Inverse function defined as the the function that undergoes the action of the other function.
A function is the inverse of f if whenever y =f(x) and
To find the inverse of the function:
Q1.
Given the function: f(x) = 7x -1
Put y for f(x) and solve for x;
y= 7x -1
Add 1 both sides we get;
y + 1 = 7x
Divide both sides by 7 we get;
Put for x;
Interchange y =x, we have
Q 2.
Given the function:
Put y for f(x) and solve for x;
Add 7 both sides we get;
taking cube root both sides we get
Put for x;
Interchange y =x, we have
Q3 .
Given the function:
Put y for f(x) and solve for x;
Add 3 both sides we get;
Divide both sides by 5 we get;
taking cube root both sides we get
Put for x;
Interchange y =x, we have
Answer:
Option 5) 23.5% is a parameter and 28% is a statistic
Step-by-step explanation:
We are given the following in the question:
"According to the U.S. Census bureau, 23.5% of people in the United States are under the age of 18. In a random sample of 250 residents of a small town in Ohio, 28% of the sample was under 18."
- Population is the collection of all the observation of individual of interest.
Population of interest:
People in the United States
- Parameter is any value that describes the population.
Parameter:
23.5% of people in the United States are under the age of 18
- Sample is a subset of a population and is always smaller than the population.
Sample:
Random sample of 250 residents of a small town in Ohio
- Statistic is any value that describes a sample.
Statistic:
28% of the sample was under 18
Thus, the correct answer is
Option 5) 23.5% is a parameter and 28% is a statistic