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3 years ago

-½(x + 1¼) = - 3 + ¼x Solve for x

Mathematics

1 answer:

crimeas [40]3 years ago

6 0

Answer:

x = (23 + √ 497 / 8) , (23 − √ 497 /8)

x=5.66168710

Step-by-step explanation:

im too lazy. use math-way

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Order from greatest to least 10.9, 10 2/5, 10 1/4

Ede4ka [16]

Answer:10.9,,,,,10 2/5,,,,,10 1/4

Step-by-step explanation:

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3 years ago

Hillary wants to go on a latin club trip to Italy it will cost $2730 for the trip the trip is 30 weeks away and she wants to mak

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3 years ago

Use the cards to create an expression that is equivalent to 10 to the fifth power.

Ne4ueva [31]

10×5 is the answer. not sure though

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3 years ago

"A laboratory tested 73 chicken eggs and found that the mean amount of cholesterol was 230 milligrams with LaTeX: \sigmaσ = 17.4

Scrat [10]

Answer:

The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.95}{2} = 0.025$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.025 = 0.975$ , so $z = 1.96$

Now, find M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.96*\frac{17.4}{\sqrt{73}} = 3.99$

The lower end of the interval is the sample mean subtracted by M. So it is 230 - 3.99 = 226.01

The upper end of the interval is the sample mean added to M. So it is 230 + 3.99 = 233.99.

The 95% confidence interval for the true mean cholesterol content, μ, of all such eggs is between 226.01 and 233.99 milligrams.

4 0

3 years ago

A server at a restaurant works 5 hours on a weekday and 8 hours on a weekend day. Use the expression to find the number of hours

BabaBlast [244]

Answer:

20 weekday hours and 16 weekend hours

Step-by-step explanation:

all u do is take 5 hours and multiple them by 4 weekdays so it gives u 20 hours and then u multiple 8 hours by 2 which is 16 hours

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3 years ago