Answer:
B. it's not useful for this question
Answer: a
no solution
Step-by-step explanation:
Solve by substitution:
1) Solve 
for x:
2) Substitute 
for 
in 
:
3) Simplify both sides of the equation:
4) Add 
to both sides of the equation:
5) Simplify both sides of the equation:
Therefore, there are no solutions to the system of equations.
Solve by elimination:
You can't solve this system of equations by elimination
Solve by graphing:
The equations are parallel to each other, therefore they never cross, so, there are no solutions.
Answer:
These are the forms to write the ratio. Please read the explanation.
<u>a. 3/4</u>
<u>b. 3:4</u>
<u>c. 3 ÷ 4</u>
<u>d. Ratio of 3 to 4</u>
Step-by-step explanation:
1. Let's check the information given to resolve the question:
Number of 13-year olds = 36
Number of 14-year olds = 48
2. Writing the ratio of 13-year-olds to 14-year olds in all three forms:
We can say that there are:
36/48 13-year olds to 14-year olds but we notice immediately that we can simplify that ratio this way:
36/48 = 18/24 (Dividing by 2) = 9/12 (Dividing by 2 again) = 3/4 (Dividing by 3)
We can conclude that the ratio of 13-year-olds to 14-year olds is 3/4 and we can write it these ways:
<u>a. 3/4</u>
<u>b. 3:4</u>
<u>c. 3 ÷ 4</u>
<u>d. Ratio of 3 to 4</u>
Answer: 
Step-by-step explanation:
The mean and variance of a continuous uniform distribution function with parameters m and n is given by :-
Given : 
Answer:
30, 5 , 21
Step-by-step explanation:
substitute the values of x into f(x) , then
f(- 5) = (- 5)² + 5 = 25 + 5 = 30
f(0) = 0² + 5 = 0 + 5 = 5
f(4) = 4² + 5 = 16 + 5 = 21
