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3 years ago

Help me from 3 through 8

Mathematics

1 answer:

skad [1K]3 years ago

7 0

Answer:

3)x=−9 and x=4

4)x=−12 and x=−5

5)x=8 and x=14

6)x=−7 and x=3

7)x=-1 2/3 and x = 1/4

8)x=2/5

Step-by-step explanation:

Hope this helps

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A church has 10 bells in its bell tower. Before each church service 7 bells are rung in sequence. No bell is rung more than once

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Answer:

3 Because there are only three bells that aren't being run there for three additional ways that the bells could be rung

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2 years ago

Translated 2 units right

melisa1 [442]

Answer:

yes

Step-by-step explanation:

3 0

3 years ago

A manager wishes to determine the relationship between the number of miles (in hundreds of miles) the manager's sales representa

Aleksandr [31]

Answer:

$y=3.529 x +37.91$

We can predict the sales representative travelled 8 miles replacing x =8 and we got:

$y(8) = 3.529*8 + 37.91= 66.142$

And we can predict the sales representative travelled 11 miles replacing x =11 and we got:

$y(11) = 3.529*11 + 37.91= 76.729$

Step-by-step explanation:

For this case we have the following data:

Miles Traveled x: 2,3,10,7,8,15,3,1,11

Sales y :31,33,78,62,65,61,48,55,120

For this case we need to calculate the slope with the following formula:

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

Where:

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

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

So we can find the sums like this:

$\sum_{i=1}^n x_i =60$

$\sum_{i=1}^n y_i =553$

$\sum_{i=1}^n x^2_i =582$

$\sum_{i=1}^n y^2_i =39653$

$\sum_{i=1}^n x_i y_i =4329$

With these we can find the sums:

$S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}=582-\frac{60^2}{9}=182$

$S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}=4329-\frac{60*553}{9}=642.33$

And the slope would be:

$m=\frac{642.33}{182}=3.529$

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

$\bar x= \frac{\sum x_i}{n}=\frac{60}{9}=6.67$

$\bar y= \frac{\sum y_i}{n}=\frac{553}{9}=61.44$

And we can find the intercept using this:

$b=\bar y -m \bar x=61.44-(3.529*6.67)=37.91$

So the line would be given by:

$y=3.529 x +37.91$

We can predict the sales representative travelled 8 miles replacing x =8 and we got:

$y(8) = 3.529*8 + 37.91= 66.142$

And we can predict the sales representative travelled 11 miles replacing x =11 and we got:

$y(11) = 3.529*11 + 37.91= 76.729$

4 0

3 years ago

100 points!! Which Fraction is the same as 1/2?

sineoko [7]

The answer is 2/4! :)

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2 years ago

Read 2 more answers

HELPPPP MEE !!!!!!!!!!!!!

ale4655 [162]

Answer:

સંગઠનોમાં અસરકારક ટીમો: તેમની પોતાની દિશા નિર્ધારિત કરો, મેનેજરો પસંદ કરેલા લોકોને માધ્યમ નક્કી કરે છે અને તેમને તાલીમની જરૂર હોતી નથી કારણ કે સભ્યો અસરકારક રીતે કાર્ય કરવા માટે તેમની પોતાની જરૂરિયાત ઓછી અથવા કોઈ માળખું વિકસાવે છે, કોચિંગ, પરામર્શ અને ચોક્કસ સપોર્ટની જરૂર છે. તેમની કામગીરી દરમિયાન અંતરાલો.

5 0

2 years ago