Answer:
Step-by-step explanation:
Given
Required
Calculate the diameter
The area of a sector is:
Substitute values for Area and 
Divide both sides by 
Make 
the subject
Take positive square roots of both sides
The diameter is then calculated as:
Answer:
12 days
Step-by-step explanation:
Let the amount of work be x.
John:
6 days = x
1 day = 
x
Together:
4 days = x
1 day = 
x
Marsha:
1 day = x - x
= 
x - 
x
= 
x
= 
x
Marsha can do of the work in 1 day.
No. of days taken (Marsha) = x ÷ x
= 12
Answer:
Step-by-step explanation:
Step 1: Obtain zero on one side and then factor. Step 2: Set each factor equal to zero. Step 3: Solve each of the resulting equations. This technique requires the zero factor property to work so make sure the quadratic is set equal to zero before factoring in step 1.
Answer:
H = 1/30
H = 0.0333
0.033
Step-by-step explanation:
The time spent waiting at a traffic light can be considered a random variable with values from 0 seconds,
it’s green when you approach and can go on through, to 30 seconds with the following distribution shape
The entire area under the distribution curve must be 1.
Let assume the Shape is rectangle
Given
Time taken from 0s to 30s = 30s - 0s = 30s
To find height of the distribution?
Let H = the height of the distribution
Based on the above assumption;.
H * 30 = 1 --- make H the subject of formula
H = 1/30
H = 0.0333
To three decimal places is 0.033
<h3>Hence, the calculated height of the distribution is 0.033</h3>
This is because 2÷3 = 0 . Six repeating but the Calculator rounds the last 6 to 7 because I can't fit all the repeating sixes in one calculator
