Answer:
60
Step-by-step explanation:
"z varies jointly as x and y" can be expressed algebraically as z = kxy, where k is the constant of proportionality.
Given: z = 24 when x = 3 and y = 4, then 24 = k(3)(4), or 24 = 12k.
The const. of prop. must then be k = 2.
So now we have the specific relationship z = 2xy.
If x = 5 and y = 6, then z = 2(5)(6) = 60.
Answer:
Check Explanation
Step-by-step explanation:
Population parameter is defined as the description of characteristics for the entire population.
Sample statistic are summaries of or an estimation of the population parameter. They're description of characteristics obtained from a group of random sample elements of a population.
a) If the mean amount of kilowatts used per household was obtained by taking an average of the entire households in Pennsylvania in the January of that particular year, then the 1346 kilowatts is a population parameter.
But if the value was arrived at from sampling only a number of random households all over Pennsylvania, then it's a sample statistic.
b) Since the mean cost of a cup of tea describes a characteristic that was obtained from only 19 selected cups of green tea, it is a sample statistic.
The number 19 too, representing the number of cups of green tea in the sample is also a sample statistic.
Answer:
12
Step-by-step explanation:
the answer is 12
Step-by-step explanation:
The area of a square is given by :
A = a²
Where
a is the side of the square
For square A, Area = 64 sq units
64 = a²
a = 8 units
For square B, Area = 30 sq units
30 = a²
a = 
units
For square C, Side length = 14 units
A = 14²
A = 196 sq units
For square D, Side length = units
A = 
²
A = 30 sq units
Hence, this is the required solution.
To determine the salary of the department head, you will create any equation that represents the situation. Equation it will be in terms of S, the salary of one of the department heads.
3s + s = 190000
4s = 190000
s = $47500
The salary of the department head is $47,500.
