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Llana [10]
3 years ago
8

Which method do you prefer to use to find sums- count by tens and ones, use compatible numbers, or use friendly numbers and adju

st? Explain why.
Mathematics
1 answer:
elena-s [515]3 years ago
5 0
Count by tens and ones.
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A new centrifugal pump is being considered for an application involving the pumping of ammonia. The specification is that the fl
ollegr [7]

Answer:

from the t-distribution table, at df = 7 and t = 2.23

Lies p-values [ 0.05 and 0.025 ]

Hence;

0.025 < p-value < 0.05

Step-by-step explanation:

Given that;

x^{bar} = 6.5 gpm

μ = 5 gpm

n = eight runs = 8

standard deviation σ = 1.9 gpm

Test statistics;

t = (x^{bar} - μ) / \frac{s}{\sqrt{n} }

we substitute

t = (6.5 - 5) / \frac{1.9}{\sqrt{8} }

t = 1.5 / 0.67175

t = 2.23

the degree of freedom df = n-1 = 8 - 1

df = 7

Now, from the t-distribution table, at df = 7 and t = 2.23

Lies p-values [ 0.05 and 0.025 ]

Hence;

0.025 < p-value < 0.05

3 0
2 years ago
Cengage Homework Trig/Pre-calc
iVinArrow [24]

Based on the populations of the town from 2000 to 2008, the average rate of change of the population between 2002 and 2004 is -6.1%

The average rate of change between 2002 and 2006 is -4.88%

<h3>What is the average rate of change?</h3>

The average rate of change can be found as:

=Change in population / Population in base year

The average rate of change in population between 2002 and 2004 is:

= (77 - 82) / 82

= -6.1%

The average rate of change in population between 2002 and 2006 is:

= (78 - 82) / 82

= -4.88%

Find out more on the average rate of change at brainly.com/question/23434598

#SPJ1

3 0
1 year ago
Simplify -6+4{14+2[60-9(1+3)]}
ICE Princess25 [194]

Answer:

242

Step-by-step explanation:

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3 years ago
324.56 × 54.82<br><br> SHOW YOUR WORK<br><br> ALL OF IT PLEASE AND THANK YOU!<br> PLEASE HURRY!
Mazyrski [523]

Answer:

17792.3792

Step-by-step explanation:

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8 0
2 years ago
the length of a rectangular piece of steel in a bridge is 5 meters less than double the width. the perimeter of the piece of ste
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