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2 years ago

Write an equation for the line parallel to the given line that contains C. C(-3,6); y=8/9x-2

Mathematics

1 answer:

tekilochka [14]2 years ago

3 0

Step-by-step explanation:

y = 8x/9 - 2

therefore m = 8/9

x1 = -3

y1 = 6

from, y - y1 = m(x-x1)

y - 6 = 8/9(x+3)

y-6 = 8x/9 + 8/3

y - 8x/9 -26/3 = 0 (×9)

9y - 8x -78 = 0

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A quadrilateral has all sides the same length and no right angles. What is the name of the quadrilateral?

matrenka [14]

That quadrilateral is a square.

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3 years ago

Any one know how to find the roots of an equation?

soldier1979 [14.2K]

So what you do is
make into ax^2+bx+c=0 form

add-9/2 to both sides
y^2-2y+9/2=0
now we use the quadratice formula which is
x= $\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

ax^2+bx+c=0
1y^2-2y+9/2
a=1
b=-2
c=9/2
subsitute
x= $\frac{-(-2)+/- \sqrt{(-2)^{2}-4(1)(9/2)} }{2(1)}$
x= $\frac{2+/- \sqrt{4-(36/2)} }{2}$
x= $\frac{2+/- \sqrt{4-(18)} }{2}$
x= $\frac{2+/- \sqrt{-14} }{2}$
x= $\frac{2+/- \sqrt{-14} }{2}$
x= $1+/- \frac{\sqrt{-14} }{2}$
x= $1+/- \frac{\sqrt{14} \sqrt{-1}}{2}$
x= $1+/- \frac{\sqrt{14} i }{2}$
x= $1+/- \frac{ i \sqrt{14} }{2}$

answer is C

6 0

3 years ago

Really need a definite correct answer on this

cluponka [151]

Third choice is correct hope I helped:3

6 0

3 years ago

How many sides is a decagon? I forgot LOL

umka21 [38]

Answer:

10 sides.

Step-by-step explanation:

In geometry, a decagon is a ten-sided polygon or 10-gon. The total sum of the interior angles of a simple decagon is 1440°. A self-intersecting regular decagon is known as a decagram.

3 0

3 years ago

Convert 123 cm to dam

kondaur [170]

123 centimeters into dekameters
0.123
10 centimeters = 1 decimeter
100 decimeters = 1 dekameter
Therefore, 100 centimeters = 10 decimeters = 0.1
23 centimeters = 2.3 decimeters = 0.023
0.1 + 0.023 = 0.123 dam

8 0

3 years ago