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3 years ago

What must be true if = 30 Ze? Assume a+0,b=0, and y+0.

Mathematics

1 answer:

Aliun [14]3 years ago

5 0

Answer:

Step-by-step explanation:

we can find x/y by multiply 3a/b * 3a/b

x/y = 9a^2/b^2

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Quadratics need help making parabola

timama [110]

Answer:

The equation of the parabola is $y = \frac{1}{3}\cdot x^{2}-\frac{4}{3}\cdot x -4$ , whose real vertex is $(x,y) = (2, -5.333)$ , not $(x,y) = (2, -5)$ .

Step-by-step explanation:

A parabola is a second order polynomial. By Fundamental Theorem of Algebra we know that a second order polynomial can be formed when three distinct points are known. From statement we have the following information:

$(x_{1}, y_{1}) = (-2, 0)$ , $(x_{2}, y_{2}) = (6, 0)$ , $(x_{3}, y_{3}) = (0, -4)$

From definition of second order polynomial and the three points described above, we have the following system of linear equations:

$4\cdot a -2\cdot b + c = 0$ (1)

$36\cdot a + 6\cdot b + c = 0$ (2)

$c = -4$ (3)

The solution of this system is: $a = \frac{1}{3}$ , $b = - \frac{4}{3}$ , $c = -4$ . Hence, the equation of the parabola is $y = \frac{1}{3}\cdot x^{2}-\frac{4}{3}\cdot x -4$ . Lastly, we must check if $(x,y) = (2, -5)$ belongs to the function. If we know that $x = 2$ , then the value of $y$ is:

$y = \frac{1}{3}\cdot (2)^{2}-\frac{4}{3}\cdot (2) - 4$

$y = -5.333$

$(x,y) = (2, -5)$ does not belong to the function, the real point is $(x,y) = (2, -5.333)$ .

5 0

2 years ago

Which equation could represent "the area of a square as a function of a side"?

Katen [24]

Let

s-------> the side length of a square

we know that

The area of a square is equal to

$A=s^{2}$

convert to function notation

$A(s)=s^{2}$

therefore

<u>the answer is </u>

$A(s)=s^{2}$

3 0

3 years ago

Read 2 more answers

HELP ASAP WILL MARK BRAINIEST!!!!!

Setler [38]

1/4 revolution per foot, not sure about slope. Hope this helps

6 0

2 years ago

There were 24 balloons at the beginning of a party. By the end of the party, m of them had popped. Using m , write an expression

musickatia [10]

24 - m is the answer. Simple

4 0

3 years ago

Which is greater 0.15 or 1/5

katen-ka-za [31]

In order to do this we need to make them both fractions, or both decimals. It's much easier to make them both decimals, as you can get $\frac{1}{5}$ into decimal form by simply dividing 1 by 5.
$1 / 5 = .20$
If 1/5 = .20, then 1/5 is greater than .15!

6 0

3 years ago