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3 years ago

I’m gonna be honest I can’t figure it out I need help

Mathematics

2 answers:

Margaret [11]3 years ago

7 0

Answer:

No, the two different lines have nothing to do with eachother so the is no relationship and is not a proportional relationship.

Step-by-step explanation:

kondor19780726 [428]3 years ago

3 0

No relationship/ no proportional relationship. (they have nothing to do with each other)

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Lorenzo ate 2/5 of his bag of almonds. His 4 friends ate equal shares of the remaining almonds. Which expression represents the

Olegator [25]

Given that Lorenzo ate 2/5 of his bag of almonds, the remaining amount was:
1-2/5=3/5
Given that 4 of his friend shared the remaining fraction equally, then the amount that each one ate was:
3/5÷4
that is:
3/5 divided by 4
this can be simplified to
=3/5×1/4
=3/20

The answer is: 3/5 divided by 4

6 0

2 years ago

The manufacturer of an MP3 player wanted to know whether a 10% reduction in price is enough to increase the sales of its product

Effectus [21]

The pooled estimate of the variance is 187.650 and the test statistic is -2.32

<h3>Pooled estimate of the variance</h3>

The dataset is given as:

Regular price 138 124 89 112 116 123 98

Reduced price 124 134 154 135 118 126 133 132

Let the regular price be dataset 1 and the reduced price be dataset 2.

So, we have:

#1: 138 124 89 112 116 123 98

#2: 124 134 154 135 118 126 133 132

Calculate the sample means and the sample standard deviations using a graphing calculator.

$\sigma_1 = 16.56$

$\bar x_1 = 114.29$

$\sigma_1^2 = 274.24$

$\sigma_2 = 10.65$

$\bar x_2 = 132$

$\sigma_2^2 = 113.43$

The pooled estimate of the variance is:

$\sigma_p^2 = \frac{\sigma_1^2(n_1 - 1) + \sigma_2^2(n_2 - 1)}{(n_1 - 1) + (n_2 - 1)}$

This gives

$\sigma_p^2 = \frac{274.24 * (7 - 1) + 113.43 * (8 - 1)}{(7- 1) + (8- 1)}$

Evaluate the factors

$\sigma_p^2 = \frac{2439.45}{13}$

Divide

$\sigma_p^2 = 187.65$

Hence, the pooled estimate of the variance is 187.650

<h3>The test statistic</h3>

This is calculated using:

$t = \frac{\bar x_1 - \bar x_2}{\sqrt{\sigma_p^2} * \sqrt{\frac{1}{n_1} + \frac{1}{n_2}}}$

This gives

$t = \frac{114.29 - 132}{\sqrt{187.650} * \sqrt{\frac{1}{7} + \frac{1}{6}}}$

This gives

$t = \frac{-17.71}{\sqrt{187.650} * \sqrt{\frac{13}{42}}}$

Evaluate the product

$t = \frac{-17.71}{\sqrt{58.08214}}$

Evaluate the exponent

$t = \frac{-17.71}{7.62}$

Divide

t = -2.32

Hence, the test statistic is -2.32

<h3>The decision about the null hypothesis</h3>

The critical value at 0.025 significance level is -1.96

-2.32 is less than -1.96

This means that we accept the null hypothesis

Read more about test statistic at:

brainly.com/question/14128303

#SPJ1

6 0

2 years ago

How are 0.5 and 0.05 and 0.0005 related

Anestetic [448]

$\bf \cfrac{5}{10}\cdot \cfrac{1}{10}\implies \cfrac{5}{100}~\hspace{10em}\cfrac{5}{100}\cdot \cfrac{1}{10}\implies \cfrac{5}{1000}
\\\\\\
\textit{we can say one is \boxed{\textit{one tenth of the other}}}
\\\\[-0.35em]
~\dotfill\\\\
\cfrac{5}{100}\cdot 10\implies \cfrac{5}{10}~\hspace{10em}\cfrac{5}{1000}\cdot 10\implies \cfrac{5}{100}
\\\\\\
\textit{or we can say, one is \boxed{\textit{ten times the other}}}$

3 0

3 years ago

A cube-shaped box has a volume of 27 cubic inches. Bethany says each side of the cube measures 9 inches because 9 × 3 = 27. Is B

anastassius [24]

Answer: Bethany is not correct

Step-by-step explanation:

The volume of the box is the product of its three dimensions, length, width, and height. The product of a number of "inches" and a "pure number" (3 has no units given) will not be "cubic inches."

_____

As it happens, the cube-shaped box with a volume of 27 cubic inches will have a height of 3 inches and a side area of 9 square inches. The edge length of the cube is 3 inches, not 9.

7 0

3 years ago

Helpppppp mathhhhhhhhhh

kogti [31]

It would be HL theorem because the triangles are at 90 deg with a right angle

5 0

3 years ago