Which of these is an example of a random sample?
2 answers:
Answer:
The random sample is D. The other 3 cannot be taken as random since they involve groups at a specific place or doing a specific thing.
Step-by-step explanation:
B I believe is a good sample
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2 1/3 x 4 7/8 =
7/3 x 39/8 =
273/24 =
91/8
Answer:
6
Step-by-step explanation:
Unknown number = x
So,
x - 4 = 2 (add 4 to both sides)
x - 4 + 4 = 2 + 4
x = 6
Answer:
x = 20
y = 28
Step-by-step explanation:
hari's age: x
harry's age: y
7x = 5y
4(x+4) = 3(y+4)
4x+16 = 3y+12
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20/3x +20/3 = 7x
20/3 = 1/3x
x = 20
y = 28
