Answer:
62 cubic yards
Step-by-step explanation:
<em>This is conversion from feet to yards.</em>
<u>Step 1: Write the ratio of yards to feet.</u>
Yard : Feet
1 : 3
<u>Step 2: Find out the volume of mould</u>
1 : 3
x : 186
<em>Cross multiply</em>
3x = 186
x = 62 yards
Therefore, 62 cubic yards of concrete is needed in order to fill the mould.
!!
2/3x + 15= 17
subtract 15 from each side
2/3 x +15 -15 = 17-15
2/3 x =2
multiply by 3/2
3/2* 2/3 x = 2 * 3/2
x = 3
Answer:
5. 
6. 
Step-by-step explanation:
5:
6:
Answer:
Evidence of an increased risk of lung cancer associated with cigarette smoking was sought by Doll and Hill. In one study, 649 lung cancer cases were matched by age, and gender to 649 controls; 647 of the cases and 622 of the control had a history of smoking cigarettes.a.Name the type of study. Case control studyb.Create the appropriate 2X2 table for the study. (2 points)Lung CancerControlsSmokers647622Nonsmokers227Total649649c.Calculate the appropriate measure of association for the study. (4 points)The odds ratio: Cases = 647 / 2 = 323.5The odds ratio: Control = 622 / 27 = 23.03The odds ratio = 23.03 / 323.5 = 14.04 d.Interpret the results. (2 points)Smokers are 14 times more likely to develop lung cancer than non-smokers.
Step-by-step explanation:
Answer:
y= 
x-
Step-by-step explanation:
The first step to making an equation of a line is finding the slope. To do this, we can use the point slope formula: 
In this case,
y2=1
y1= -2
x2=5
x1= -4
plug this into the formula: 
, which gives us 3/9, or 1/3 as the slope.
Now we have the equation y=1/3x+b. Let's find b! We can do this by plugging in one of the points into our new equation, let's use (5,1)
1=y, 5=x
1=(5)+b
b= -
now, we plug b= -2/3 into our equation, and we finally get y= x-
