Answer:
A prospective study
Step-by-step explanation:
A prospective study watches for outcomes, such as the development of a disease (in this case cancer). It also usually involves taking a group of subjects and watching them over a long period of time. The outcome of interest should be common between them (whether certain smoking habits lead to the development of cancer in British doctors).
The total amount spent on lunch per year would be 325 dollars.
<h3>What is the fundamental principle of multiplication?</h3>
Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.
We have been given that Your lunch in the hospital cafeteria cost $6.50. Based on working 50 weeks per year, then;
The lunch in the hospital cafeteria cost = $6.50.
The total amount spend on lunch per year;
6.50 x 50
325
Hence, the total amount spent on lunch per year would be 325 dollars.
Learn more about multiplications;
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Good evening
Answer:
<h2>130</h2><h2 />
Step-by-step explanation:
let L represent the length of the hypotenuse :
Since we are in a right triangle case then the Pyth theorem is a valid choice to solve the problem :
the Pythagoren theorem states that :
L² = 50^2+120^2
then
L² = 16 900
then
L = √(16 900)
=130
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There are a total of 30 students in the class. The equation used to solve the question is, 
× x = 24.
Step-by-step explanation:
Step 1; It is given that 24 students make up eight-tenths of the entire class. Assume the total number of students in class is x. So we have 24 will equal eight-tenths of x, as x is the total number of students.
The equation is × x = 24. Multiply both sides by 
× x × = 24 × , The and cancel out each other on the LHS.
x = 
= 30.
So there are 30 students in the class in total i.e. x = 30.
Step 2; To draw the bar chart, measure the entire length of the bar and divide it by 10. Shade eight-tenths of the bar and name it students that are going to the trip = 24, the remaining two-tenths is named students not going = 6.
