Answer:
25
Step-by-step explanation:
Hi there!
Since the slope of a line perpendicular to a line is always the negative inverse of that slope, you just switch the numerator and denominator around and add or omit the negative sign to the original slope.
The answer would be -2.
Hope this helps!
10meters=1000cm
1000-210=890
Mary has 890 centimeters of thread left on the reel.
Answer: (A) randomly selected elements within each of the strata form the sample.
Step-by-step explanation:
Stratified random sampling is a random sampling technique in statistics .
- It includes the partition of the entire population into sub-parts called strata.
- The strata are formed on the basis of the characteristics shared by members .
- After the formation of strata, researcher randomly selects participants from each strata to ensure that that the participant of every group must involve in the sample to represent each character.
Hence, the correct answer is :
(A) randomly selected elements within each of the strata form the sample.
Answer:
140
Step-by-step explanation:
=(-4+55+18)+(18+25+28)
=69+71
=140
