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3 years ago

HELP PLEASE!

Mathematics

2 answers:

Veseljchak [2.6K]3 years ago

6 0

The generic equation of the line is:
y-yo = m (x-xo)
Where,
m = (y2-y1) / (x2-x1)
Substituting values:
m = (2000-2500) / (18-22)
Rewriting:
m = (- 500) / (- 4)
m = 125
We choose an ordered pair:
(xo, yo) = (18, 2000)
Substituting:
y-2000 = 125 (x-18)
y = 125x - 2250 + 2000
y = 125x + 250
Answer:
The equation of the best fit line in slope-intercept form is:
y = 125x + 250

Shalnov [3]3 years ago

4 0

Answer:

y = 125x + 250

Step-by-step explanation:

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Answer:

Part 1) m∠EOD=20°

Part 2) m∠AOD=80°

Step-by-step explanation:

Part 1) Find the measure of angle EOD

we know that °

m∠EOD=m∠EOX-m∠DOX

we have

Observing the figure

m∠EOX=140°

m∠DOX=120°

substitute

m∠EOD=140°-120°=20°

Part 2) Find the measure of angle AOD

we know that °

m∠AOD=m∠DOX-m∠AOX

we have

Observing the figure

m∠AOX=40°

m∠DOX=120°

substitute

m∠AOD=120°-40°=80°

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$\underbrace{\begin{bmatrix}1&6&6^2\\1&3&3^2\\\vdots&\vdots&\vdots\\1&9&9^2\end{bmatrix}}_{\mathbf A}\underbrace{\begin{bmatrix}a_0\\a_1\\a_2\end{bmatrix}}_{\mathbf x}=\underbrace{\begin{bmatrix}100\\110\\\vdots\\70\end{bmatrix}}_{\mathbf b}$

To solve $\mathbf{Ax}=\mathbf b$ , multiply both sides by the transpose of $\mathbf A$ , which introduces an invertible square matrix on the LHS.

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