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2 years ago

7

In your own words, explain HOW to find the standard deviation of this data set. (20 points). What does the standard deviation te

ll you about this data? (20 points). Dr. Cwetna recorded all of the grades on a unit test on the chart below. plz somebody help I need this by today.

1 answer:

ipn [44]2 years ago

6 0

I need the choices please

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A line passes through (10,4) and (13,-11). Write the equation of the line in standard form.

AlexFokin [52]

$\bf (\stackrel{x_1}{10}~,~\stackrel{y_1}{4})\qquad (\stackrel{x_2}{13}~,~\stackrel{y_2}{-11}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-11-4}{13-10}\implies \cfrac{-15}{3}\implies -5 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-4=-5(x-10)$

now

standard form for a linear equation means

• all coefficients must be integers, no fractions

• only the constant on the right-hand-side

• all variables on the left-hand-side, sorted

• "x" must not have a negative coefficient

therefore,

$\bf y-4=-5(x-10)\implies y-4=-5x+50\implies \blacktriangleright 5x+y=54 \blacktriangleleft$

7 0

3 years ago

13p - 3 = 5p + 13 find p please

densk [106]

P=2. Hope this helps

7 0

2 years ago

Read 2 more answers

Help I don't understand

Ksivusya [100]

Answer:

Sequence: Reflection over the y-axis, then 1 to the right and 2 down to get the triangle ABC to A'B'C.

Step-by-step explanation:

Have a nice day!

7 0

2 years ago

How do you break down this problem?

ozzi

What do you mean
Could you please insert an equation or a problem

8 0

3 years ago

Please help with math

dezoksy [38]

Anwser: The hotels charge for a call is the same for a 20 minute call.

Step-by-step explanation:

Alrighty, same deal as the last problem, set up a equality, it should look like this:

$1+.80x=$2+.75x

Move the variable to the left of the equation:

.80x-.75x=2-1

Simplify

.05x=1

x=20

3 0

2 years ago