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Why is the equation of the line of symmetry x equals negative b over 2a?
The question refers to the equation of a parabola, that is, a quadratic equation of the form y = ax2 + bx + c. Suppose x1 = -b/2a - z and x2 = -b/2a + z for some real number z. Then y1 = a*(-b/2a - z)2 + b*(-b/2a - z) + c = b2/4a + bz + az2 - b2/2a - bz + c = b2/4a + az2 - b2/2a + c and y2 = (-b/2a + z)2 + b*(-b/2a + z) + c = b2/4a - bz + az2 - b2/2a + bz + c = b2/4a + az2 - b2/2a + c So y1 = y2 thus, if x is the same distance (z) either side of -b/2a, then the corresponding y values are the same. And that, is what a line of symmetry means.
What is 2a times 3?
Since the question is 3(2a), then just write it out. 3(2a) is 2a+2a+2a or 6a.
What is the multaplicative inverse of -2a?
The multiplicative inverse of -2a is 1/(-2a) = -1/2a
A 2b a b 2a b 2a?
a-^2a-b^-a-b
2a x 2a?
The answer is 4a^2.
Can you use a 9v-1a power supply when it calls for 9v-2000ma?
Unfortunately no, if the device calls for 2000ma you will need a 2A (amp) power supply to adequately power it.
How many volts is 2000ma?
20
Will a 4.5v 2000ma car adapter work in place of a 5v 2000ma?
It may not carry enough voltage to power a number of functions... but what is the adapter for? The answer however is that it almost certainly will not work.
To what scale should the ammeter be set in order to read a current of 2000ma?
2000ma is equal to 2 amps. Set you meter to a current range ABOVE 2 amps.
What is the answer to this 2a 4 when a equals 2?
2a 4 is the same as saying 2*a*4, so if you plug 2 in for a, this equals 16
If an adaptor is marked with output 12v dc and 2000mA does this mean the appliance draws 2amps when in use?
Yes and No. You have three types of adaptors: constant current with variable voltage output. constant voltage with variable current output. constant voltage with constant current output. What you are talking about is the latter. This means that the adaptor was created for a specific appliance requiring 12V/2A, which it will indeed use. Heavier appliance will not draw enough current/voltage and will malfunction. Lighter appliance will draw too much current/voltage and will overload/shortcircuit.
What is -2a - 9 = 39?
This is very easy questions lets solve it -2a - 9 = 39? Add both site 9 -2a - 9 +9= 39+9 Now Simplyfy -2a - 9 +9= 39+9 -2a= 48 devide both side with same factors -2a/-2= 48/-2 a= -24
Why is the equation of the line of symmetry x equals negative b over 2a?
The question refers to the equation of a parabola, that is, a quadratic equation of the form y = ax2 + bx + c. Suppose x1 = -b/2a - z and x2 = -b/2a + z for some real number z. Then y1 = a*(-b/2a - z)2 + b*(-b/2a - z) + c = b2/4a + bz + az2 - b2/2a - bz + c = b2/4a + az2 - b2/2a + c and y2 = (-b/2a + z)2 + b*(-b/2a + z) + c = b2/4a - bz + az2 - b2/2a + bz + c = b2/4a + az2 - b2/2a + c So y1 = y2 thus, if x is the same distance (z) either side of -b/2a, then the corresponding y values are the same. And that, is what a line of symmetry means.
What is 2a times 3?
Since the question is 3(2a), then just write it out. 3(2a) is 2a+2a+2a or 6a.
What is the multaplicative inverse of -2a?
The multiplicative inverse of -2a is 1/(-2a) = -1/2a
How do you solve 2a 7b 2a - 7b?
2a+2a-7b+7b =4a
A 2b a b 2a b 2a?
a-^2a-b^-a-b
