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grin007 [14]
2 years ago
14

How to solve for axis of symmetry for y=(x+2)(x-4)

Mathematics
2 answers:
liberstina [14]2 years ago
8 0

Answer:

x=1

Step-by-step explanation:

y=x^{2} -4x+2x-8
y=x^{2} -2x-8   (a=1, b=-2)
x=-\frac{b}{2a} =\frac{-2}{2*1}
x=1
y=(x+2)(x-4),  x=1
y=(1+2)(1-4)
y=-9

lianna [129]2 years ago
5 0

Answer:

x = 1

Step-by-step explanation:

you can first find the two zeroes

that would be

x + 2 = 0

x - 4 = 0

x = {-2, 4}

then you average them

-2 + 4 = 2

2 / 2 = 1

the aos is 1

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Plz help me and thanks so much
IrinaK [193]
<span> 6(3x+8)+32+12x </span>Final result : 10 • (3x + 8)

Step by step solution :<span>Step  1  :</span><span>Equation at the end of step  1  :</span> (6 • (3x + 8) + 32) + 12x <span>Step  2  :</span><span>Step  3  :</span>Pulling out like terms :

<span> 3.1 </span>    Pull out like factors :

   30x + 80  =   10 • (3x + 8) 

Final result : 10 • (3x + 8) <span>
</span>
4 0
3 years ago
Michela’s skateboard ramp is at an incline of 40°. When she attempts a trick on the ramp, she finds that it is too steep. She ad
marissa [1.9K]

Answer:

22.7604763 degrees

Step-by-step explanation:

Note that the answer is NOT 20 degrees.

She adjusted the ramp to half the original <em>incline</em>

Therefore we have tan 40 = x = 0.839099631.

We want an incline of y degrees where tan y = x/2 = 0.839099631/2 = 0.419549815

Taking the arctan of both sides, we get

y = arctan(0.419549815) = 22.7604763 degrees

8 0
3 years ago
4|m-n|<br> If m=-7 and n=2
Snowcat [4.5K]
You would first substitute -7 for m and 2 for n. It would look like this: 4| -7-2 | . we first solve the absolute value because it is the first step in PEMDAS or order of operations. -7-2 is equal to -9. Our equation should look like this now: 4 |-9| . we solve the absolute value portion, the absolute value of a negative number is the the same number but positive. the absolute value would be 9. (we just take the negative symbol off). we now have 4 x 9. This is equal to 36.

36 is the answer.
6 0
3 years ago
I need help with this please help me out
Virty [35]

Answer:

A and E

Step-by-step explanation:

hope that helps

5 0
3 years ago
What is the undefined value of 3b^2+13b+4/b+4?
dmitriy555 [2]
Let f(b) = <span>3b^2+13b+4/b+4
</span>the domain of f is   D = {b/ b+4#0}  so b# - 4

so the undefined value of is when b = -4
8 0
3 years ago
Read 2 more answers
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