A=(AB+CD)*h/2
A=(12+19)*9/2=31*9/2=279/2=139,5 in.^2
Answer:
The nonpermissible replacement of the variable y is -3
Step-by-step explanation:
The nonpermissible replacement of the variable in a certain expression is the value of the variable that will make the denominator of the expression zero.
The expression 
has the denominator 
This denominator cannot be equal zero, thus,
Answer:
828
Step-by-step explanation:
To cut the margin of Error in half, the clinic needs quadruple of the sample size.
If the sample size is 207 women,
Then quadruple of 207 = 4 * 207 = 828
Answer:
Not the same.
Step-by-step explanation:
Given that there is a rotation of 180 degrees . To check whether this is a reflection over the y axis.
Reflection over the y axis make the coordinates (x,y) as (-x,y)
i.e. this means rotation of 180 degrees about the origin anticlockwise.
Hence just rotation of 180 degrees is not the same as a reflection over y axis.
The conditions are:
i) 180 degree to be rotated anticlockwise
ii) Rotation is about the origin
Hence a rotation of 180 degrees need not always be the same as reflection over y axis.
