4 years ago

Really need help writing an inequality in algebra PLEASE HELP ME!!!! PLEASE PLEASE PLEASE

Mathematics

1 answer:

almond37 [142]4 years ago

3 0

You gotta write the question down first for us to see what it is

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What is the probability of winning a raffle if there are 500 tickets and you got 5

Elza [17]

Probablity is (desired outcomes)/(total possible)

desired is your tickets: 5
total possible=500

probability is 5/500=1/100=1%

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4 years ago

A study showed that there are 16 vehicles for every 10 households. How many vehicles are there for 107 million households?

Komok [63]

$16v........10h \\x......107.000.000h \\\\ x=\frac{16*107.000.000}{10} \\\\ x=16*10.700.000 \\\\ \boxed{x=171.200.000 \ vehicles}$

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3 years ago

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Which of the following equations correctly represents the law of sines?

baherus [9]

Answer:

Option c is correct

Step-by-step explanation:

From the screenshot I attached.

sinA/a=SinC/c

a/c=SinA/SinC

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3 years ago

In a normally distributed data set a mean of 55 where 99.7% of the data fall between 47.5 and 62.5, what would be the standard d

NeX [460]

Given that normally distributed data set has a mean of 55 and 99.7% of data fall between 47.5 and 62.5.

Let s be the standard deviation of data set.

Since 99.7% data fall within 3 standard deviations of mean, z-value for 47.5 and 62.5 has an absolute value of 3.

That is |z|=3

But z= $\frac{x-mean}{standard deviation}$

Let us plugin x=47.5 and mean =55 and equate it to 3.

That is $|\frac{47.5-55}{s}| = 3$

$|\frac{-7.5}{s} | =3$

Since x is always positive ( being standard deviation), $|\frac{-7.5}{s} | = \frac{|-7.5|}{s} = \frac{7.5}{s}$

Hence $\frac{7.5}{s}= 3$

$s=\frac{7.5}{3} = 2.5$

We will get same value with 62.5 as well.

Hence standard deviation of data set is 2.5.

3 0

4 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%5B4%5D%7Bx-8%7D" id="TexFormula1" title="\sqrt[4]{x-8}" alt="\sqrt[4]{x-8}" align="abs

gavmur [86]

X=8 is the correct answer

3 0

3 years ago