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3 years ago

I will give away all my points if you can answer this with no sweat.

Mathematics

1 answer:

Vaselesa [24]3 years ago

6 0

Answer:

Step-by-step explanation:

it would equal 2^7/2^5, which equals 2², which equals 4

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A music store marks up the instruments it sells by 30%.

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Answer:

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Step-by-step explanation:

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5 0

3 years ago

Calculate the income tax for a person earning 25,000

hjlf

Answer:

There is no answer, since there is not enough information

Step-by-step explanation:

You need to give the rates and time as well.

3 0

3 years ago

Please help me!! I don't understand<br> No linksssss

AVprozaik [17]

Answer:

thanks haahhahahaha

Step-by-step explanation:

3 0

3 years ago

The data below shows the duration of eruption (in seconds) of a geyser in a national park and the height (in feet) of the erupti

amid [387]

Answer:

ŷ = -0.08522X + 157.7779

The slope = - 0.1

Intercept = 157.8

Step-by-step explanation:

Given the data :

Duration __ Height

240 140

237 154

122 140

267 140

113 160

258 140

232 150

105 150

186 160

248 155

243 125

241 136

214 140

114 155

272 130

227 125

237 125

238 139

203 125

270 140

218 140

226 135

250 141

245 140

120 139

267 110

103 140

270 135

241 140

239 135

General regression equation :

y = mx + c

Where

y = predicted variable

x = predictor / explanatory variable

m = slope or gradient

c = Intercept

The regression equation obtained ;

ŷ = -0.08522X + 157.7779

To one decimal place :

ŷ = -0.1X + 157.8

The slope = - 0.1

Intercept = 157.8

8 0

3 years ago

Help<br><br> Determine which equation is parallel to line jk and which is perpendicular to line jk.

alukav5142 [94]

Answer:

5x + 3y = 13 parallel.

6x - 10y = 7 perpendicular.

Step-by-step explanation:

Two lines with slopes $m_1$ and $m_2$ are parallel when $m_1=m_2$ and are perpendicular when $m_1*m_2=-1$

Now determine the slope of all the lines

The line jk passes through the points

(-5,5) and (1,-5) so its slope is

$\frac{-5-5}{1-(-5)}=\frac{-10}{6}=-\frac{5}{3}$

To determine the slope of the lines in the blue rectangles, isolate y from each one and the coefficient of x is the slope

5x-3y = 8 ------> y = (5/3)x + 8/3 ------> slope 5/3

Neither parallel nor perpendicular.

6x+10y = 11 ------> y = (-6/10)x + 11/10 = (-3/5)x + 11/10 ------> slope -3/5

Neither parallel nor perpendicular.

5x + 3y = 13 ------> y = (-5/3)x + 13/3 ------> slope -5/3

This line is parallel

6x - 10y = 7 ------> y = (6/10)x - 7/10 = (3/5)x -7/10 ------> slope 3/5

Since (-5/3)(3/5) = -1 this line is perpendicular.

8 0

3 years ago

I will give away all my points if you can answer this with no sweat.​

I will give away all my points if you can answer this with no sweat.