All categories

3 years ago

Help for brainliest

Mathematics

1 answer:

Anarel [89]3 years ago

4 0

Answer:

Rotation of 180 degrees, either direction

Dilation, making it smaller by some factor(we aren't given measurements so we cannot be exact)

Then move the figure to the right and then move the figure up

Step-by-step explanation:

You might be interested in

Use reasoning algebra to write the unknown factor

NARA [144]

I dont get it... lol

7 0

3 years ago

Asap, sorry the pics kinda blurry

Vadim26 [7]

Here is all the work with it

3 0

2 years ago

Which point on the scatter plot is an outlier?

dlinn [17]

Answer:

The point 9,50

Step-by-step explanation:

All the other ones are within a reasonable distance of each other.

7 0

1 year ago

A recipe for scrambled eggs uses 2 tablespoons of milk for every 3 eggs

Goryan [66]

Answer:

2:3

Step-by-step explanation:

4 0

3 years ago

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

3 years ago