3 years ago

X/4-5>-4 what is this please help

Mathematics

1 answer:

xeze [42]3 years ago

8 0

Answer:

Step-by-step explanation:

44 yeah yeah what about the other

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The correct answer is x= -9. Hope this helps!!

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What's the answer to -7=c-6

son4ous [18]

Simple...

you have: -7=c-6

You want to isolate the variable c

-7=c-6

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Thus, your answer.

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3 years ago

Which expression is equivalent to -1.3 - (-1.9)

Verdich [7]

Answer:

-8-(-1)-5

Step-by-step explanation:

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3 years ago

Apple launches an ad campaign for iPhone 12. Managers want to know what is the % of social media mentions that have positive rea

Orlov [11]

Answer:

social media mentions do managers at Apple need to collect, if they want to get a margin of error of 2%

Sample size 'n' = 625

Step-by-step explanation:

Step(i):-

Given data Apple launches an ad campaign for iPhone 12

Managers want to know what is the % of social media mentions that have positive reactions to the new ad campaign

probability of positive reactions p = 1/2

Probability of negative reactions q = 1-p = 1/2

we know that $\sqrt{p(1-p}\leq \frac{1}{2}$

Step(ii):-

Given margin of error = 2 % =0.02

The margin of error is determined by

$M.E = \frac{\sqrt{p(1-p} }{\sqrt{n} }$

$0.02 = \frac{\frac{1}{2} }{\sqrt{n} }$

$\sqrt{n} =\frac{1}{2 X0.02}$

√n = 25

squaring on both sides, we get

n = 625

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3 years ago