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ss7ja [257]
3 years ago
8

How do you know a quadratic function has exactly one zero?

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
5 0

Answer:

b)

Step-by-step explanation:

y = x² + 6x + 9 = (x + 3)(x + 3)

(x + 3)(x + 3) = 0, x = - 3,

or

you can find  D =b² - 4ac

y = x² + 6x + 9

a = 1, b = 6, c = 9

D = 6² - 4*1*9 = 36- 36= 0

When D =0, a quadratic function has exactly one zero.

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What is the volume of the coffee in a can of the can has a radius of 4 inches and a height of 9inches
posledela

Answer:452.16

Step-by-step explanation: The formula for a cylinder (coffee in a can) is "V=\pir^{2}h"

8 0
3 years ago
Evaluate \dfrac{e}{4}+2f-3 4e +2f−3 when e=12e=12 and f=\dfrac12f= 21<br> ​
dusya [7]

Answer:

\frac{13+\left(-3\right)^2+4\left(-3\right)+1-\left(-10-\left(-6\right)\right)}{\frac{\left(4+5\right)}{\left(4^2-3^2\left(4-3\right)-8\right)}+12}=5


Step-by-step explanation:


7 0
3 years ago
Which equation has the steepest graph
Serggg [28]
I know it is between b and c i am not sure cause they are both similar in the way they look but if i had to choose maybe B 
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5 0
3 years ago
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Find the slope.<br> (if it's a fraction with a whole number, write it as an improper fraction)
tiny-mole [99]

As you can see, every time x increases by 2, y decreases by 5.

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6 0
3 years ago
Please Help Me ASAP Will Thank Rate 5 Starts And Mark Brainliest If You Are CORRECT
Ivan

Answer:

The correct option is 4.

Step-by-step explanation:

It is given that figure ABCD is transformed to figure A′B′C′D′.

The vertices of ABCD are A(1,1), B(3,3), C(4,2) and D(4,1).

The vertices of A'B'C'D' are A'(1,-3), B'(3,-1), C'(4,-2) and D'(4,-3).

It is clear that the figure translate 4 units down and the rule of translation is

Translation is a rigid transformation, it means image and preimge are congruent.

Since ABCD is translate 4 units down to make A′B′C′D′, therefore

Congruent part of congruent figures are congruent.

                 

Therefore the correct option is 4.

I Hope It's Helpful :)

4 0
3 years ago
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