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3 years ago

Help please. I need the answer.

Mathematics

1 answer:

Deffense [45]3 years ago

3 0

Create and solve an appropriate equation: Maria's earnings = Liam's earnings

0.20x = $625+0.10x.

Find x.

0.10x = $625; thus, x = $6250. At this level of food sales, these two people earn the same amount.

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Irina18 [472]

Step-by-step explanation:

ajhai ans Pani chaiyo ki sabai ko ans pathau

3 0

3 years ago

Read 2 more answers

The number of "destination weddings" has skyrocketed in recent years. For example, many couples are opting to have their wedding

melamori03 [73]

Answer:

We conclude that the mean wedding cost is less than $30,000 as advertised.

Step-by-step explanation:

We are given the following data set:(in thousands)

29100, 28500, 28800, 29400, 29800, 29800, 30100, 30600

Formula:

$\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}$

where $x_i$ are data points, $\bar{x}$ is the mean and n is the number of observations.

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$Mean =\displaystyle\frac{236100}{8} = 29512.5$

Sum of squares of differences = 3408750

$S.D = \sqrt{\frac{3408750}{7}} = 697.82$

Population mean, μ = $30,000

Sample mean, $\bar{x}$ = $29512.5

Sample size, n = 8

Alpha, α = 0.05

Sample standard deviation, s = $ 697.82

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 30000\text{ dollars}\\H_A: \mu < 30000\text{ dollars}$ We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{29512.5 - 30000}{\frac{697.82}{\sqrt{8}} } = -1.975$

Now,

$t_{critical} \text{ at 0.05 level of significance, 7 degree of freedom } = -1.894$

Since,

$t_{stat} < t_{critical}$

We fail to accept the null hypothesis and reject it.

We conclude that the mean wedding cost is less than $30,000 as advertised.

8 0

4 years ago

I need very urgent help with this

Svetlanka [38]

P(-5) = (-5)³ - 6(-5)² - 7(-5) + 60

p(-5) = -125 - 6(25) - (-35) + 60

p(-5) = -125 - 150 + 35 + 60

p(-5) = -275 + 95

p (-5) = -180

so is x + 5 a factor of polynomial ( NO) because when make a substitution by -5 the answer will not be 0

6 0

3 years ago

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There are 15 vacant units in Noor's apartment building. This represents 6% of the total number of units. How many units are in N

MaRussiya [10]

15/x = 6/100
6x=1500
x=250

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3 years ago

Jamie King wants to buy a new car in 5 years. Jamie

Alenkasestr [34]

Jamie King will have $12,100.25

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3 years ago