3 years ago

The fractions of 4/6 & 5/10

Mathematics

2 answers:

telo118 [61]3 years ago

7 0

I don't understand your question are you multiplying or what

mylen [45]3 years ago

7 0

8/12 and 10/20 that's the answer I think

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Find the sample size required to achieve the given margin of error with SD = 51.02 and z - score = 1.96. Round your answer to th

coldgirl [10]

Answer:

The sample size required is 2500.

Step-by-step explanation:

z-score:

In function of the margin of error M, the z-score is given by:

$Z = \frac{M}{\frac{\sigma}{\sqrt{n}}} = \frac{M\sqrt{n}}{\sigma}$

In this question, we have that:

$\sigma = 51.02, M = 2, Z = 1.96$

$Z = \frac{M\sqrt{n}}{\sigma}$

$1.96 = \frac{2\sqrt{n}}{51.02}$

$2\sqrt{n} = 51.02*1.96$

$\sqrt{n} = \frac{51.02*1.96}{2}$

$(\sqrt{n})^2 = (\frac{51.02*1.96}{2})^2$

$n = 2500$

The sample size required is 2500.

3 0

3 years ago

Determine the value of x for which a || b if m<30=80-x and m<7=90-2x.

abruzzese [7]

D. 10

m<3 = 80 - (10) = 70
m<7 = 90 - (20) = 70

8 0

3 years ago

For which nonnegative value of x is the expression 5+x/25-x^2

erica [24]

Answer:

Step-by-step explanation:

$\frac{5+x}{25-x^2} >0\\=\frac{5+x}{(5+x)(5-x)} \\=\frac{1}{5-x} >0\\if~5-x>0\\or~5>x\\or x$

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3 years ago

Help me please 25 points.

sveticcg [70]

The answer i got is VP<------------->

AKA the first option

i hope this is right

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3 years ago

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The amount of liquid a bottle cap can hold would most likely be measured in

vichka [17]

The answer is: Milliliters

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2 years ago