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bekas [8.4K]
3 years ago
5

If mQSR is 39°, what is the measure of arc QR?

Mathematics
1 answer:
Alla [95]3 years ago
3 0

Answer:

78

Step-by-step explanation:

just double it

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Someone pls just comment something​
hichkok12 [17]

Answer:

Eleventeen

Step-by-step explanation:

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3 years ago
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The line of symmetry of the parabola whose equation is y = ax^2 -4x + 3 is
alex41 [277]

Answer:

B. -1

Step-by-step explanation:

If we have a parabola whose equation is:

y=ax^{2} +bx+c

The line of symmetry is calculated as:

x=\frac{-b}{2a}

Now, we have the equation y=ax^{2}-4x+3 and the line of symmetry is x=-2

Where:

b=-4\\c=3

So, we can replace b by -4 and x by -2 and solve for a using the following equation as:

x=\frac{-b}{2a}\\-2=\frac{-(-4)}{2a}\\-2(2)a=4\\-4a=4\\a=-1

It means that the equation of the parabola is equal to:

y=-1x^{2}-4x+3

7 0
3 years ago
What is the distance from (3.5 ,5) to (3.5, -12)<br> 17<br> 7
skad [1K]
The answer is 7 I think
3 0
3 years ago
True or false: if x=1, then x&gt;0. If false, give a counterexample.
UkoKoshka [18]
True
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3 0
3 years ago
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A line with a slope of 0 passes through the point (9,5). What is its equation in slope-intercept form?
shepuryov [24]

Answer:

y = 5      

Step-by-step explanation:

Any line with a slope of 0 is horizontal, represented by the equation y = a number. That number is the y-value of all the points the line intersects.

We know that that the line intersects (9,5). So, take the y-value of that point and write it into the equation of y = a number. Thus, the answer is y =5.

8 0
3 years ago
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