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4 years ago

What is the first step in proving that the sum of the measures of triangle PQR is 180°?

Mathematics

2 answers:

vodka [1.7K]4 years ago

5 0

Draw a line through R parallel to the segment PQ

First choice.

Ivan4 years ago

5 0

I just took this quiz, so I am certain I'm right!

The first step is A. Construct a line parallel to segment PQ

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How do I solve this? (Geometry)

Luden [163]

Answer:

Step-by-step explanation:

(3×10×8)÷26400= 0.00909090909

hope it helps

8 0

3 years ago

Find+the+positive+value+for+α+if+the+radius+of+the+circle+3x^2+3y-6αx+12y-3α=0+is+4

Alik [6]

Answer:

$\alpha=3$

Step-by-step explanation:

<u>Equation of a Circle</u>

A circle of radius r and centered on the point (h,k) can be expressed by the equation

$(x-h)^2+(y-k)^2=r^2$

We are given the equation of a circle as

$3x^2+3y^2-6\alpha x+12y-3\alpha=0$

Note we have corrected it by adding the square to the y. Simplify by 3

$x^2+y^2-2\alpha x+4y-\alpha=0$

Complete squares and rearrange:

$x^2-2\alpha x+y^2+4y=\alpha$

$x^2-2\alpha x+\alpha^2+y^2+4y+4=\alpha+\alpha^2+4$

$(x-\alpha)^2+(y+2)^2=r^2$

We can see that, if r=4, then

$\alpha+\alpha^2+4=16$

Or, equivalently

$\alpha^2+\alpha-12=0$

There are two solutions for $\alpha$ :

$\alpha=-4,\ \alpha=3$

Keeping the positive solution, as required:

$\boxed{\alpha=3}$

8 0

3 years ago

PLS ANSWER NEEDED IMMEADIATELY< WILL REPORT IF ANY LINKS

JulijaS [17]

Answer:

It is skewed right

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is constant of proportionality ? y=14x k=?

Delvig [45]

Answer: I believe that its 14

Step-by-step explanation:

6 0

3 years ago

Write a slope-intercept equation of a line that passes through (-3,4) and (3,-8)

Umnica [9.8K]

Y=-2x-2 is the right answer

4 0

3 years ago