1 + + '2+3+ - + = no +1 그

Which shows .51 and .069 in fraction form in equal denominator.

Marina CMI [18]

A. Shows it in fraction form

8 0

4 years ago

What is the value of n in the equation –negative StartFraction one-half EndFraction left-parenthesis 2 n plus 4 right-parenthesi

stepladder [879]

The value of n in the equation is 1

Step-by-step explanation:

The equation is $-\frac{1}{2}$ (2n + 4) + 6 = -9 + 4(2n + 1)

At first we must do that:

1. Open the brackets in both sides

2. Add like terms

3. Solve to find n

L.H.S:

∵ $-\frac{1}{2}$ (2n + 4) + 6 = -n - 2 + 6

∴ $-\frac{1}{2}$ (2n + 4) + 6 = -n + 4

R.H.S:

∵ -9 + 4(2n + 1) = -9 + 8n + 4

∴ -9 + 4(2n + 1) = 8n - 5

∴ -n + 4 = 8n - 5

- Add 5 to both sides

∴ -n + 9 = 8n

- Add n to both sides

∴ 9 = 9n

- Divide both sides by 9

∴ n = 1

The value of n in the equation is 1

Learn more:

You can learn more about equation in brainly.com/question/8955867

brainly.com/question/9738996

brainly.com/question/10708697

#LearnwithBrainly

4 0

3 years ago

Read 2 more answers

According to a 2009 Reader's Digest article, people throw away approximately 11% of what they buy at the grocery store. Assume t

expeople1 [14]

Answer:

0.14% probability that the sample proportion exceeds 0.2

Step-by-step explanation:

I am going to use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

$\sqrt{V(X)} = \sqrt{np(1-p)}$

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that $\mu = E(X)$ , $\sigma = \sqrt{V(X)}$ .

In this problem, we have that:

$n = 108, p = 0.11$

So

$\mu = E(X) = np = 108*0.11 = 11.88$

$\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{108*0.11*0.89} = 3.2516$

What is the probability that the sample proportion exceeds 0.2

This is 1 subtracted by the pvalue of Z when X = 0.2*108 = 21.6. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{21.6 - 11.8}{3.2516}$

$Z = 2.99$

$Z = 2.99$ has a pvalue of 0.9986

1 - 0.9986 = 0.0014

0.14% probability that the sample proportion exceeds 0.2

8 0

4 years ago

5p+9c=p solve for c I am confused on how to do it

Simora [160]

Since 5p5⁢p does not contain the variable to solve for, move it to the right side of the equation by subtracting 5p5⁢p from both sides.9c=−5p+p9⁢c=-5⁢p+pAdd −5p-5⁢p and pp to get −4p-4⁢p.9c=−4p9⁢c=-4⁢pDivide each term by 99 and simplify.

8 0

3 years ago

Plz help thxxxxxxxxxxxxxxxxxx

mariarad [96]

Answer:

slope is positive 2/1

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers