3 years ago

The mean of the distribution of the mean is equal to mean of parent population?

Mathematics

1 answer:

lesantik [10]3 years ago

3 0

They are equal to what ever number that you use

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GrogVix [38]

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2 years ago

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The vertices of ABC are A(-2, 2), B(6,2), and CO, 8). The perimeter of ABC?

Alexxx [7]

Answer:

Perimeter = 22.809836694575

Step-by-step explanation:

A(-2, 2) ; B(6,2) ; C(0, 8)

$AB=\sqrt{\left( 6--2\right)^{2} +\left(2-2 \right)^{2} } =\sqrt{64} =8$

$AC=\sqrt{\left( 0--2\right)^{2} +\left(8-2 \right)^{2} } =\sqrt{40} =2\sqrt{10}$

$BC=\sqrt{\left( 0-6\right)^{2} +\left(8-2 \right)^{2} } =\sqrt{72} =6\sqrt{2}$

Then

The perimeter of ΔABC = AB + BC + AC

$=8+6\sqrt{2} +2\sqrt{10}$

= 22.809836694575

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2 years ago

Solve the equations: <br> bx-c=ax+d

Paladinen [302]

Answer:

$x = \frac{c + d}{b - a}$

Step-by-step explanation:

bx-c=ax+d

<=> bx-ax=c+d

<=> (b-a)x=c+d

<=> x=(c+d)/(b-a)

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2 years ago

The school store sells packs of 12 pens for $2.40. Which is NOT a unit rate to describe this sale?

padilas [110]

The answer is D.

120 divided by 24 would not give you the price of ONE pen

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2 years ago

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An archway is modeled by the equation y = -2x2 + 8x. A rod is to be placed across the archway at an angle defined by the equatio

andrey2020 [161]

This is a fun problem! Just graph the two equations, then see what points the line intersects with the parabola. Or, set the two equations equal to each other, and solve for the two intersecting points.
Solve for x and y: -2x+8 = x-2.23y+10.34

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3 years ago