First set up a proportion
240/160 = 320/200
Cross multiply and if the left equals the right it is similar.
Answer:
Step-by-step explanation:
The area of a rectangle can be found with the formula , where is the length of the rectangle and is the width.
From the given problem statement, we know that and , so we can fill in those values in the formula anbd solve for to get the width:
Divide both sides by to isolate by itself:
Answer:
Step-by-step explanation:
<u>Given:</u>
<u>Find z-score:</u>
- z = (x - μ)/σ
- z = (104 - 80)/12 = 2
Percent value corresponding to 2 as per z-table is 0.9772. This is corresponding to 97.72%.
<u>Percentage of students earned more than $104:</u>
Ay/x = cz
Multiply 'x' to both sides:
Ay = czx
Divide 'A' to both sides:
y = (czx)/(A)
Answer:
x=56
Step-by-step explanation:
·
then cross multiply
4200=75x
x=56