c= number of cars
9 more than the number of cars
=c+9
Answer:
Sampling frame
Explanation:
A sampling frame is the source where the researcher draws his samples from. In other words, a sampling frame is like the population where the researcher gets samples for his investigation. In the above example, we are told the researcher wants to know why the 72% that subscribed last year didn't subscribe this year. He draws a sample of 8% from the 72% that he is trying to study, therefore the 72% are the sampling frame from where he gets his sample.
multiply the binomials:
(x + 3y) (3x - 2y)
Answer:
Simplify the expression:
3x^2+7xy−6y^2
Steps:
3x·2+7xy-6y·2
Multiply the numbers: 3·2=6
=6x+7xy-6·2y
Multiply the numbers: 6·2=12
=6x+7xy-12y
The inside diameter would be the outside diameter minus 2 of the wall thicknesses.
4 9/32 - (2 x 7/32)
Simplify:
4 9/32 - 14/32
Because 14/32 is larger than 9/32 change one of the hole numbers to a fraction: 1 = 32/32
rewrite 4 9/32 as 3 41/32
Now subtract:
3 41/32 - 14/32 = 3 27/32 inside diameter.
