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3 years ago

18.3: Sand Wagon

Mathematics

1 answer:

12345 [234]3 years ago

3 0

Answer:

702/9 is 78 your answer is 78

Step-by-step explanation:

27*13*2

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Shannonopens a savings account with $50. Each week after that she deposits $8 into her account. How many weeks does it take her

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Answer:56.25

Step-by-step explanation: 450 divided by 8

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3 years ago

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The mean salary for a new teacher in your town is $48,000. You believe it is higher for new teachers in a neighboring town. Stat

nikklg [1K]

Answer:

Step-by-step explanation:

Given that the mean salary for a new teacher in your town is $48,000

You believe it is higher for new teachers in a neighboring town.

So to prove or disprove your claim you have to show statistical evidence.

For that hypothesis testing is necessary.

You must conduct a hypothesis test for comparing the mean of salary of new teacher with neighbouring places

The hypotheses wouldbe

$H_0: \mu = 48000\\H_1: \mu >48000$

where mu is the average for neighbouring states.

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3 years ago

Find the points having x-coordinate of 9 whose distance from the point (3,-2) is 10.

kotegsom [21]

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{3}~,~\stackrel{y_1}{-2})\qquad (\stackrel{x_2}{9}~,~\stackrel{y_2}{y})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ \stackrel{d}{10}=\sqrt{[9-3]^2+[y-(-2)^2]}\implies 10=\sqrt{(9-3)^2+(y+2)^2} \\\\\\ 10=\sqrt{6^2+\stackrel{FOIL}{(y^2+4y+4)}}\implies 10^2=36+(y^2+4y+4)$

$\bf 100=y^2+4y+40\implies 0=y^2+4y-60 \\\\\\ 0=(y+10)(y-6)\implies y= \begin{cases} -10\\ 6 \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (9,-10)\qquad (9,6)~\hfill$

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4 years ago

Which term can be used in the blank of 36x3−22x2−__ so the greatest common factor of the resulting polynomial is 2x?

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Answer:

14x

Step-by-step explanation:

36x3 − 22x2− 14x

/2x /2x /2x

18x2 - 11x - 7

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Consider the following geometric sequence.<br><br> 2, 6, 18, 54,

Kaylis [27]

Answer:

The rule or operation in this sequence is multiplication by 3.

Step-by-step explanation:

2*3=6

6*3=18

18*3=54

and so on...

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3 years ago