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4 years ago

Which choice lists the numbers in increasing order -1. 3, 0. 4, -1/3, 5/9. Which choice lists in increasing order?

Mathematics

2 answers:

Troyanec [42]4 years ago

8 0

-1.3, -1/3, 0.4, 5/9

Katyanochek1 [597]4 years ago

3 0

-1.3,-1/3,0.4,5/9 this is how you put it in increasing order

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Find the value of n that satisfies 2(n+1)! + 6n! = 3(n+1), where $n! = n\cdot (n-1)\cdot (n-2) \cdots 2\cdot 1$.

Murrr4er [49]

Answer:

$n = 5$

Step-by-step explanation:

Given

$2(n+1)! + 6n! = 3(n+1)!$

Required

Find n

Simplify (n + 1)!

$2(n+1)*n! + 6n! = 3(n+1)*n!$

Factorize

$n![2(n+1) + 6] = 3(n+1)*n!$

Divide both sides by n!

$2(n+1) + 6 = 3(n+1)$

Open brackets

$2n + 2 + 6 = 3n + 3$

$2n + 8 = 3n + 3$

Collect like terms

$2n - 3n = 3 -8$

$-n =-5$

Multiply both sides by -1

$n = 5$

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3 years ago

Wetlands Government agencies carefully monitor water quality and its effect on wetlands (Reference: Environmental Protection Age

Vladimir79 [104]

Answer:

a. Concentration of nitrogen in water draining from fertilized lands

b. Quantitative

c. Water draining from fertilized lands

Step-by-step explanation:

a. Here we are evaluating the Concentration in miligrams of Nitrogen per liter of water, that drains from fertilized lands.. So thats what is defined as the variable.

b. When we talk about qualitative variblaes, we refer to variables that we can't define with numbers. For example the colour of a car, that's a qualitative variable. In this problem, can put a number on the nitrogen concetration. When we can measure the variable with numbers we consider it to be a quantitative variable. Therefore this is a quantitative variable

c. The implied population is the population where we want to interfer the analysis. In here we want to know the concentration of water draining from fertilized lands. So we are using random samples from a lake, and we extrapolate that analysis to a bigger universe, that it´s the water draining from fertilized lands

6 0

3 years ago

The volume of a cylinder is pi times the radius r squared multiplied by the height h. Write an expression for the volume.

Paul [167]

V= Area of the circle at the base • height =
Pi•r^2 •h

7 0

3 years ago

Write is the equation of the line with a slope of m=-4/3 that passes through the point (12, - 4)

Anika [276]

Answer:

4x +3y=36

Step-by-step explanation:

Equation of line is (y-y1) = m(x-x1)

(y+4) = (-4/3)(x-12)

3(y+4) = (-4)(x-12)

3y +12 = -4x + 48

4x+3y = 36

4 0

3 years ago

A line for tickets to a Broadway show had a mean waiting time of 20 minutes with a standard deviation of 5 minutes.

andrezito [222]

Answer:

5.48% of the people in line waited for more than 28 minutes

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean waiting time of 20 minutes with a standard deviation of 5 minutes.

This means that $\mu = 20, \sigma = 5$

What percentage of the people in line waited for more than 28 minutes?

The proportion is 1 subtracted by the p-value of Z when X = 28. So

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

$Z = \frac{28 - 20}{5}$

$Z = 1.6$

$Z = 1.6$ has a p-value of 0.9452.

1 - 0.9452 = 0.0548.

As a percentage:

0.0548*100% = 5.48%

5.48% of the people in line waited for more than 28 minutes

6 0

3 years ago