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mars1129 [50]
3 years ago
6

Please help me i really need help please help me please i really need help please help me please

Mathematics
1 answer:
umka21 [38]3 years ago
6 0

Answer:

hello hello hello is there anybody in there

Step-by-step explanation:

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One researcher wishes to estimate the mean number of hours that high school students spend watching tv on a weekday. a margin of
PtichkaEL [24]
Margin of error, e = Z*SD/Sqrt (N), where N = Sample population

Assuming a 95% confidence interval and substituting all the values;
At 95% confidence, Z = 1.96

Therefore,
0.23 = 1.96*1.9/Sqrt (N)

Sqrt (N) = 1.96*1.9/0.23

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Five times a number increased by 8 is seven less than 6 times the number. Find the number.
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3 years ago
Why does these expressions 2(30x-24), 3(20x-16), and 4(15x-12) have the same expansion?
MariettaO [177]
The expressions have the same expansion I'd say because the pairs 2 and 30, 3 and 20, and 4 and 15 because they are all equivalent to 60 because they are all factors of 60.

Same goes with the other pairs, because they are all equivalent to 48 because they are all factors of 48.
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3 years ago
22. If the measure of angle 2 is 35°, what is the measure of angle 6?
ArbitrLikvidat [17]

Answer:a.35 degrees b. 145 degrees

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Angle 2 and angle 8 are supplementary they equal 180. So 180-35=145

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