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labwork [276]
2 years ago
9

Which polynomial is prime? a) x2 – 36 b) x2 + 6 c) x2 – 7x + 12 d) x2 – x – 20

Mathematics
2 answers:
Misha Larkins [42]2 years ago
6 0

Answer:

B

Step-by-step explanation:

I don't know but I know it's b I think so

nlexa [21]2 years ago
3 0

Answer:

b) x2+6

Step-by-step explanation:

got it right on edge22

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Find the quadratic function y=​f(x) whose graph has a vertex ​(−3​,4​) and passes through the point ​(−7​,0). Write the function
olganol [36]

Answer:

Step-by-step explanation:

This is a parabola since a quadratic is a parabola.  The standard form for a parabola is y = ax² + bx + c

but before we do that, we will use the vertex form, since it will make our work easier at the beginning.  

First and foremost, when we plot the vertex and the given point, the vertex is higher up than is the point; that means that this parabola opens upside down, and its vertex form will be

y=-|a|(x - h)² + k

The absolute value is out in front of the a, so we know that the value of a is positive, but the quadratic itself is negative (upside down) and we will find that math takes care of that negative that needs to be out front.  So we need to solve for a by filling in the x, y, h, and k values from the point and the vertex:  x = -7, y = 0, h = -3, k = 4

0 = a(-7 - (-3))² + 4 and

0 = a(-7 + 3)² + 4 and

0 = a(-4)² + 4 and

0 = a(16) + 4 and

0 = 16a + 4 and

-4 = 16a so

a=-\frac{1}{4}

Now that we know a, we can plug it back into the vertex form and then put it into standard form from there.

y=-\frac{1}{4}(x+3)^2+4

Now we will FOIL out what's inside the parenthesis to get

y=-\frac{1}{4}(x^2+6x+9)+4

Simplify by distributing the -1/4 into the parenthesis:

y=-\frac{1}{4}x^2-\frac{3}{2}x-\frac{9}{4}+4

Combine like terms to get

y=-\frac{1}{4}x^2-\frac{3}{2}x+\frac{7}{4}

And there you go!

5 0
3 years ago
There are 25 classes participating in Field Day. Each activity lasts 10 minutes. if field day starts at 9 am what time will all
melamori03 [73]
................................ the answer is 1500
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3 years ago
Reconocimiento de suceciones aritmeticas y geometricas
Monica [59]

Answer:

el producto es 4 o 3 por que dice hallar el producto de CUATRO termino estonses 3×4= 12

Step-by-step explanation:

si necesita ayuda o necesita responder sus preguntas en cuestión de segundos o minutos, hágamelo saber y lo ayudaré :)

7 0
3 years ago
What is the number of faces (planes) for the following cubes?
Llana [10]
Cube has 6 faces/planes :)
4 0
3 years ago
In two or more complete sentences describe how to determine the appropriate model for the set of data. (1, 1), (3, 2), (6, 3), (
Dafna1 [17]

Answer:

3,2

Step-by-step explanation:

hope you like it then comment

5 0
3 years ago
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