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1 year ago

6/8 ÷2/6= HELP FASTI NEED HELP IN 4-5 MINS

Mathematics

2 answers:

nadezda [96]1 year ago

8 0

Divide 6/8 by 2/6, by multiplying 6/8 by the reciprocal of 2/6.

$\bf{\dfrac{6\times6}{8\times2} }$

Cancel 2×2 in both the numerator and the denominator.

$\bf{\dfrac{3\times3}{2\times2} \ \ \to \ \ \ Multiply }$

First multiply <u>3 x 3 = 9</u>, and then multiply <u>2 x 2 = 4</u>.

$\blue{\underbrace{\overbrace{\red{\boxed{\green{\boxed{\purple{\boxed{\boldsymbol{\sf{\frac{9}{4} }}}}}}}} \ \ \to \ \ \boldsymbol{\sf{Answer}}}}}$

<h3> $\huge \red{\boxed{\green{\boxed{\boldsymbol{\purple{Pisces04}}}}}}$ </h3>

GenaCL600 [577]1 year ago

3 0

Answer:

2 and 1/4 or 2.25

Step-by-step explanation:

6/8 ÷ 2/6...

so 6/8 × 6/2...

36/16...

9/4..

2 1/4 or 2.25

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Express 4 4/9 as an improper fraction. Example please.

miskamm [114]

Simple...

you have: $4 \frac{4}{9}$

To make this into an improper fraction-->>

1.) Multiply whole number by denominator

2.)Add the number you got plus the numerator

3.) Use the original denominator to finish your improper fraction

Example: $4\frac{4}{9}$

4*9=36

36+4=40

$\frac{40}{9}$

Thus, your answer.

3 0

3 years ago

Assume you have noted the following prices for books and the number of pages that each book contains. Book Pages (x) Price (y) A

belka [17]

Answer:

a) $y=0.00991 x +1.042$

b) $r^2 = 0.7503^2 = 0.563$

c) $r=\frac{7(30095)-(4210)(49)}{\sqrt{[7(2595100) -(4210)^2][7(354) -(49)^2]}}=0.7503$

Step-by-step explanation:

Data given

x: 500, 700, 750, 590 , 540, 650, 480

y: 7.00, 7.50 , 9.00, 6.5, 7.50 , 7.0, 4.50

Part a

We want to create a linear model like this :

$y = mx +b$

Wehre

$m=\frac{S_{xy}}{S_{xx}}$

And:

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}$

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}$

With these we can find the sums:

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=2595100-\frac{4210^2}{7}=63085.714$

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i){n}}=30095-\frac{4210*49}{7}=625$

And the slope would be:

$m=\frac{625}{63085.714}=0.00991$

Nowe we can find the means for x and y like this:

$\bar x= \frac{\sum x_i}{n}=\frac{4210}{7}=601.429$

$\bar y= \frac{\sum y_i}{n}=\frac{49}{7}=7$

And we can find the intercept using this:

$b=\bar y -m \bar x=7-(0.00991*601.429)=1.042$

And the line would be:

$y=0.00991 x +1.042$

Part b

The correlation coefficient is given by:

$r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}$

For our case we have this:

n=7 $\sum x = 4210, \sum y = 49, \sum xy = 30095, \sum x^2 =2595100, \sum y^2 =354$

$r=\frac{7(30095)-(4210)(49)}{\sqrt{[7(2595100) -(4210)^2][7(354) -(49)^2]}}=0.7503$

The determination coefficient is given by:

$r^2 = 0.7503^2 = 0.563$

Part c

$r=\frac{7(30095)-(4210)(49)}{\sqrt{[7(2595100) -(4210)^2][7(354) -(49)^2]}}=0.7503$

4 0

3 years ago

Which three ordered pairs complete the table to give solutions of the equation y = –6x?

Anika [276]

A: <span>(–2, 12), (0,0), and (2, –12)</span>

6 0

3 years ago

HELP ASAP PLEASE!

Genrish500 [490]

Step-by-step explanation:

lets take a look....

In order to find the perimeter of a triangle you have to get the sum of all sides. In other words,

Blue triangle:

$p = (4x +2) + (7x + 7) + (5x - 4) \\ p = 4x + 2 + 7x + 7 + 5x - 4 \\ p = 16x + 5$

Red triangle:

$p = (x + 3) + (2x - 5) + (x + 7) \\ p = x + 3 + 2x - 5 + x + 7 \\ p = 4x + 5$

Difference:

$d = (16x + 5) - (4x + 5) \\ d = 16x + 5 - 4x - 5 = 12x \\ d = 12x$

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3 years ago

What was john paul vann lifespan

fgiga [73]

He was born on July 2, 1924 and he died on June 9, 1972
~Hope this helped

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3 years ago