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2 years ago

If the r-value, or correlation coefficient, of a data set is negative , the coefficient of determination is negative

Mathematics

1 answer:

AleksAgata [21]2 years ago

6 0

This is false because the confection of a determination is native

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Please help! Consider the given circle with the shaded sector xy and central angle 225. The circumference is 30 units

OleMash [197]

$\textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\[-0.5em] \hrulefill\\ C=30\pi \end{cases}\implies 30\pi =2\pi r\implies \cfrac{30\pi }{2\pi }=r\implies \boxed{15=r} \\\\[-0.35em] ~\dotfill$

$\textit{arc's length}\\\\ s = \cfrac{\theta \pi r}{180}~~ \begin{cases} r=radius\\ \theta =\stackrel{degrees}{angle}\\[-0.5em] \hrulefill\\ r=15\\ \theta =225 \end{cases}\implies \widehat{XY}=\cfrac{(225)\pi (15)}{180}\implies \boxed{\widehat{XY}\approx 58.90} \\\\[-0.35em] ~\dotfill\\\\ \textit{area of a circle}\\\\ A=\pi r^2\qquad \qquad A=\pi (15)^2\implies A=225\pi \implies \boxed{A\approx 706.86}$

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3 years ago

Identify the graphed linear equation.

Nuetrik [128]

Answer:

The answer to your question is letter C

Step-by-step explanation:

Process

1.- Find two points of the line

A ( 0, 1)

B ( 1, -3)

2.- Find the slope of the line

$m = \frac{y2 - y1}{x2 - x1}$

$m = \frac{-3 - 1}{1 - 0}$

$m = \frac{-4}{1}$

m = -4

3.- Find the equation of the line

y - y1 = m (x - x1)

y - 1 = -4( x - 0)

y -1 = -4x

y = -4x + 1

8 0

3 years ago

If x represents a positive integer, find the solution to the following inequality. 10-x>2

Lina20 [59]

X is any number smaller than 8, or X<8. A positive integer could be 7, 6, 5, 4, 3, 2, 1, or 0.

8 0

3 years ago

In one month, Mikhail’s Furnishings can make 160 carpets or 160 quilts, while Dominique’s Parlor can make 120 carpets or 200 qui

marysya [2.9K]

Answer:

Step-by-step explanation:

Mikhail’s Furnishings: 160 carpets or 160 quilts

Dominique’s Parlor: 120 carpets or 200 quilts

Current production per month

Mikhail’s: 80 carpets and 80 quilts

Dominique’s: 60 carpets and 100 quilts

Post-trade

Mikhail’s: produces 160 carpets

Dominique’s: produces 200 quilts

They trade 90 quilts for 70 carpets so at the end of trade they will have items as follows

Mikhail’s carpets will reduce from 160-70=90 carpets but have additional 70 quilts

Dominique’s quilts will reduce from 200-90=110 but have additional carpets of 70

Gains from trade

Comparing outcome of post-trade with current production

Mikhail’s Furnishings: 90 carpets-80 carpets=10 carpets

90 quilts-80 quilts=10 quilts

Dominique’s Parlor: 70 carpets -60 carpets=10 carpets

110 quilts-100 quilts=10 quilts

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3 years ago

PLEASE HELP MEEE THIS IS DUE TODAY

aalyn [17]

OMG I HAD THAT LAST YEAR LET ME LOOK FOR IT

4 0

3 years ago