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vlabodo [156]
3 years ago
15

Write an equation of the line passing through the point (1, 8)​ that is perpendicular to the line x+8y=5​

Mathematics
1 answer:
stealth61 [152]3 years ago
8 0

Answer:

y=8x

Step-by-step explanation:

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The average score of all high school students in math and science is 150 with a standard deviation of 25. A random sample of 125
Evgesh-ka [11]

Answer:

The difference is significative we reject H₀

Step-by-step explanation:

Normal Distribution

Population mean            X₁    =  150

Population standard deviation       σ  =  25

Sample size        n   =  125

Sample mean     X₂   =  158

1.-CI =  95 %   significance level    α  =  5%    α = 0,05

From z-table α = 0,05    z(c)  =   1,64    ( the test is one-tail test to the right)

2.-Hypothesis Test

Null Hypothesis                                    H₀        X₂  =  X₁

Alternative Hypothesis                        Hₐ        X₂  >  X₁

3.-To compute z(s)

z(s)  =  ( X₂  -  X₁ ) / σ/√n

z(s)  =    8 * 11,14 /25

z(s)  =  89,12/25

z(s)  = 3,56

4.- Comparing  z(s)  and z(c)

z(s)  > z(c)

Then z(s) is in the rejection region we reject H₀

7 0
3 years ago
If 3 pens cost 6 dollars how much is each pen?<br><br><br><br><br> Please help I need this asap
NemiM [27]

Answer: $2

Step-by-step explanation:

7 0
1 year ago
40: PLEASE HELP Write the equation that describes the line with slope=-6 and y-intercept=2 in slope intercept form. Example y=mx
mezya [45]

Answer:

y= -6x+2

Step-by-step explanation:

y=mx+b

Slope is also known/substituted by the variable m. Therefore we can come to the conclusion that m=-6.

y=-6x+b

Y-intercepts are substituted with the variable b. Therefore we can substitute the 2 as b, meaning b=2.

Leaving you with the final answer of:

y= -6x+2

5 0
3 years ago
The formula for the area of a
tamaranim1 [39]

Answer:

true

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Suppose you want to buy 100 pens. You can buy 100 pens at a 10% discount at one store where the price is $3.99 per pen. And you
Sliva [168]

Answer:

store 1 price after discount = $3.59

other store price after discount = $3.63

total price difference of 100 pens between store is $4

Step-by-step explanation:

given data

buy = 100 pens

discount at one store = 10 %

price = $3.99 per pen

discount at another store = 15%

price = $4.27 per pen

solution

we get here first discount at store one is

discount = pen price × discount rate .............1

discount = $3.99 × 10%

discount = $0.399

so price of pen at store 1

price of pen at store 1 after discount is

price after discount = $3.99 - $0.399

price after discount = $3.59

and

discount at other store is

discount = pen price × discount rate .............2

discount = $4.27 × 15%

discount = $0.64

so price of pen at other store  

price of pen at other store after discount is

price after discount = $4.27  - $0.64

price after discount = $3.63

and

Price of 100 pens after discount at store 1 = $3.59 × 100

Price of 100 pens after discount at store 1  = $359

and

Price of 100 pens after discount at other store =  $3.63 × 100

Price of 100 pens after discount at other store =  $363

so total price difference of 100 pens between store is $363  - $359  

total price difference of 100 pens between store is $4

4 0
2 years ago
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