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Serjik [45]
3 years ago
12

4m-3/4=-9+4m/8 this is my question that i need help with

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
7 0

Answer:

m=-\frac{33}{14}

Step-by-step explanation:

4m-\frac{3}{4}=-9+\frac{4m}{8}

(4m-\frac{3}{4})8=(-9+\frac{4m}{8})8 multiply by 8 to get rid of the largest denominator

32m-\frac{24}{4}=-72+4m

32m-6=-72+4m

32m-4m=-72+6 Rearrange the equation and Collect like-terms

28m=-66

m=-\frac{66}{28} simplify

m=-\frac{33}{14}

Bess [88]3 years ago
5 0

Answer:

The answer is -2 5/14 if you're trying to solve for m

Step-by-step explanation:

first you get rid of the fractions by mutiplying both sides by 4.

4(4m-3/4)=(-9+4m/8)4

16m-3=-36+2m      then you put the varible terms on one side and the numbers on one side

14m=-33

then divide -33 by 14

which will give you the fraction -2 5/14 unless you want decimal form which would be around -2.36

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Answer:

Sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.

Step-by-step explanation:

To yield a more accurate estimate of the population mean, margin of error should be minimized.

margin of error (ME) of the mean can be calculated using the formula

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for a given confidence level, and the same standard deviation, as the sample size increases, margin of error decreases.

Thus, random sample of 50 people from population A, has smaller margin of error than the sample of 20 people from population B.

Therefore, sample mean from population A has probably more accurate estimate of its population mean than the sample mean from population B.

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