2 years ago

What are the two zeros of the quadratic function defined by the expression 9x2 - 4?

Mathematics

1 answer:

SIZIF [17.4K]2 years ago

8 0

The zeros of this function is

x=2/3 , -2/3

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The dimensions of a rectangle can be given by x+9 and x-2. If the area is 60ft^2, what is the value of X?

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Answer:

Step-by-step explanation:

(x + 9) * (x - 2) = 60

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x^2 + 7x - 18 = 60

x^2 + 7x = 78

FACTORING:

x(x + 7) = 78

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Answer:

15 divided by 4 = 3 3/4

Step-by-step explanation:

First divide 15 on 4 to get 3.75. convert 3.75 to a fraction. 3 will stay as three, and 0.75 will be converted to 3/4. the answer to your question is 3 and 3/4. I hope this was correct. if it was then please mark as brainliest.

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X-5y=33<br> 5x-6y=70<br> solve the system by the addition method

BARSIC [14]

For this case we have the following system of equations:

$x-5y = 33\\5x-6y = 70$

We multiply the first equation by -5:

$-5x + 25y = -165$

Thus, we have the equivalent system:

$-5x + 25y = -165\\5x-6y = 70$

We add the equations:

$-5x + 5x + 25y-6y = -165 + 70\\19y = -95\\y = - \frac {95} {19}\\y = -5$

We find the value of the variable "x":

$x-5 (-5) = 33\\x + 25 = 33\\x = 33-25\\x = 8$

Thus, the solution of the system is:

$(x, y) :( 8, -5)$

Answer:

$(x, y) :( 8, -5)$

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Is (-1, 2) a solution to this system of inequalities? 2x + 18y < 7 and 2x - 4y < 12

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Yes

Plug in points

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2 years ago