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beks73 [17]
3 years ago
14

What is the line symmetry for the graph of y= -3x^2+12x-11

Mathematics
2 answers:
scoray [572]3 years ago
8 0
The answer to your question is x=2. what you want to do is find both the x values for your quadratic equation and then add them and divide by 2.
____ [38]3 years ago
7 0

Answer:

The line of symmetry is x=2

Step-by-step explanation:

Given:y=-3x^2+12x-11

We are given a quadratic equation and to find the line of symmetry.

As we know the line of symmetry of parabola passes through the x value of vertex.

If vertex of parabola is (h,k) then equation of line of symmetry x=h

So, first we find the vertex of parabola.

For equation: y=ax^2+bx+c

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

For given equation, a=-3 and b=12

Therefore, x=-\dfrac{12}{2(-3)}

x=2

Hence, The line of symmetry of given parabola is x=2

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AB = x + 15 DC = 4x AD = x + 10 BC = ? Quadrilateral ABCD is a parallelogram if both pairs of opposite sides are congruent. Show
dexar [7]

Answer:

BC=15\ units

Step-by-step explanation:

we know that

In a parallelogram opposite sides are congruent

In this problem

we have that

AB and DC are opposite sides

AD and BC are opposite sides

so

AB=DC

AD=BC

step 1

Find the value of x

AB=DC

substitute the given values

x+15=4x

solve for x

4x-x=15

3x=15

x=5\ units

step 2

Find the length of AD

we have that

AD=x+10

substitute the value of x

AD=5+10=15\ units

step 3

Find the length of BC

Remember that

AD=BC ----> by opposite sides

therefore

BC=15\ units

6 0
3 years ago
(A)+(B)=8 I need help for this question please, and thanks. :) 10 pts!!
Monica [59]
You haven't included enough information for the question, but assuming that a and b are the same then a is 4 and b is 4
7 0
3 years ago
PLEASE HELP ASAP 35 PTS
salantis [7]

Answer:

B


Step-by-step explanation:


4 0
3 years ago
Product in standard form (explain)<br> (3+6i)(4+9i)
ololo11 [35]
First you have to factor (aka, multiply) your binomial (which is what you have written) usually it helps to organize your thinking, and help tell what you need to multiply, to use the binomial chicken(or crab claw, what ever you want to call it) which basically you draw two arches, one arch connecting the 3 and 4, and then the other the 3 and 9i. on the opposite side (depending on wheater you connected then from the top or bottom) you connect (with an arch) the 6i and the four, and then the 6i to the 9i.

so now you multiply each piece you've connected:
3 x 4= 12
3 x 9i= 27i 
6i x 4= 24i
6i x 9i= 54i^2 

after  you've done this you can move on to  putting it into standard form, which just means you put things in descending order, depending on how many exponents the x (or in this case i) has.
your largest exponent is 54i^2, so that's first in out equation, next 27i, and 24i (you can combine these because they are like term) which equals 51i, after that you just add the 12 on the end, so the final equation looks like this:

54i^2+51i+12


4 0
3 years ago
Estimate the measure of the angle ​
abruzzese [7]

Answer: C) 65 degrees

Step-by-step explanation: the next highest is 90, but that would have the arrows in the shape of an L, since its closer than that, its lower than 90, so its 65.

6 0
2 years ago
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