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4 years ago

24x4y 3x-4y-1 Which of the following is the simplest form of the expression above? 8 8x-16y-1 8x-1y-1 8x8y2

Mathematics

2 answers:

rosijanka [135]4 years ago

5 0

Answer:

8x⁸y²

Step-by-step explanation:

beks73 [17]4 years ago

3 0

8x8y2 would be the answer

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I REALLY NEED HELP!!!!

NISA [10]

Answer:

1 2/8 inches

Step-by-step explanation:

smallest = 2/8

largest = 1 4/8

difference = 1 2/8

4 0

3 years ago

The 2008 Workplace Productivity Survey, commissioned by LexisNexis and prepared by World One Research, included the question, "H

LenaWriter [7]

Answer:

A 95% confidence interval estimate of the mean number of hours a legal professional works on a typical workday is [7.44 hours, 10.56 hours].

Step-by-step explanation:

We are given that x is normally distributed with a known standard deviation of 12.6.

A sample of 250 legal professionals was surveyed, and the sample's mean response was 9 hours.

Firstly, the pivotal quantity for finding the confidence interval for the population mean is given by;

P.Q. = $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ ~ N(0,1)

where, $\bar X$ = sample average mean response = 9 hours

$\sigma$ = population standard deviation = 12.6

n = sample of legal professionals = 250

$\mu$ = mean number of hours a legal professional works

Here for constructing a 95% confidence interval we have used One-sample z-test statistics as we know about population standard deviation.

So, 95% confidence interval for the population mean, $\mu$ is ;

P(-1.96 < N(0,1) < 1.96) = 0.95 {As the critical value of z at 2.5% level

of significance are -1.96 & 1.96}

P(-1.96 < $\frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }$ < 1.96) = 0.95

P( $-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ < ${\bar X-\mu}$ < $-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ) = 0.95

P( $\bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ < $\mu$ < $\bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ) = 0.95

95% confidence interval for $\mu$ = [ $\bar X-1.96 \times {\frac{\sigma}{\sqrt{n} } }$ , $\bar X+1.96 \times {\frac{\sigma}{\sqrt{n} } }$ ]

= [ $9-1.96 \times {\frac{12.6}{\sqrt{250} } }$ , $9+1.96 \times {\frac{12.6}{\sqrt{250} } }$ ]

= [7.44 hours, 10.56 hours]

Therefore, a 95% confidence interval estimate of the mean number of hours a legal professional works on a typical workday is [7.44 hours, 10.56 hours].

5 0

3 years ago

-3 3/4 divided by -10

Alexandra [31]

Answer:

0.375

3/8

Step-by-step explanation:

used a calculator to do 3/4 and added it to -3 then divided that by -10

5 0

3 years ago

MATH FRACTIONS!! What is 3/4 divided by 5/6 how to solve it the step by step. I NEED IT

Reil [10]

Answer:

9/10

Step-by-step explanation:

the rule says

$\frac{a}{b} /\frac{c}{d} =\frac{ad}{bc}$

so in our case

a=3

b=4

c=5

d=6

so the division is

$\frac{3*6}{4*5} \\\\=\frac{18}{20}$

we can simplify

$\frac{18}{20} \\\\=\frac{2(9)}{2(10)} \\\\=\frac{9}{10}$

that's our answer

I don't know if you need step by step of the rule, if you need let me know

6 0

3 years ago

Read 2 more answers

Bowling alley A charges a flat fee of $40 and .40 cents per game. Bowling alley B charges a flat fee of $20 and .65 cents per ga

iren2701 [21]

X is equal to $80 and y is 72

3 0

4 years ago