Answer:

Step-by-step explanation:
We know that 1π rad=180°
Hence we can use a proper relation

Solving for x results

Answer:
(c) A cluster sample
Step-by-step explanation:
A cluster sample occurs when the intended population is divided into non- overlapping sub -groups or clusters and some of these clusters are represented in the sample.
From the question, In a state 15 high schools where randomly selected and the standardized test was administered to only 10th grade student. Here, the high schools are the non-overlapping sub groups that is randomly selected and a reasonable representation of the entire subgroups.
Answer:
x = y−6/r+4
Step-by-step explanation:
Let's solve for x.
y=4x+rx+6
Step 1: Flip the equation.
rx+4x+6=y
Step 2: Add -6 to both sides.
rx+4x+6+−6=y+−6
rx+4x=y−6
Step 3: Factor out variable x.
x(r+4)=y−6
Step 4: Divide both sides by r+4.
x(r+4)/r+4=y−6/r+4
2/3x + 6 - 1/3x -4 = -6
1/3x + 2 = -6
1/3x = -6 - 2
1/3x = -8
x = -8 * 3
x = -24
Answer:
1/2 is the fractional part of cookie which was eaten by Dan.
Step-by-step explanation:
Dan has 2 1/2 cookies and ate 1/2, so we can just subtract the 2 1/2-1/2
which cancels out the 1/2, which is the fractional part.
He has 2 cookies left.