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2 years ago

If f(x) = 3x2 + 1 and g(x) = 1 – x, what is the value of (f – g)(2)?

Mathematics

1 answer:

Stels [109]2 years ago

4 0

So (f-g)(x) = 3x2 + x, so when x = 2, the function is 14

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Carlos is using the quadratic formula to find the solutions of y=3x^2-5x-2. Which of the following will simplify to the correct

Nana76 [90]

Answer:

$Fx=\frac{5\pm\sqrt{25+24} }{6}$

Step-by-step explanation:

A quadratic equation in one variable given by the general expression:

$ax^2+bx+c$

Where:

$a\neq 0$

The roots of this equation can be found using the quadratic formula, which is given by:

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}$

So:

$y(x)=3x^2-5x-2=0$

As you can see, in this case:

$a=3\\b=-5\\c=-2$

Using the quadratic formula:

$x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}=\frac{-(-5)\pm\sqrt{(-5)^2-4(3)(-2)} }{2(3)}=\frac{5\pm\sqrt{25+24} }{6}$

Therefore, the answer is:

$Fx=\frac{5\pm\sqrt{25+24} }{6}$

4 0

2 years ago

THIS IS FOR MY TEST PLEASE HELP

AVprozaik [17]

2(3x+4y) = 2(24)
6x+8y = 48
Add both the equations
6x + 8y = 48
+ x - 8y = -20
—————————
7x = 28
x = 28/7
x = 4

Plug in this value in the second equation

(4) - 8y = -20
-8y = -24
y = -24/-8
y = 3

Therefore:
x = 4
y = 3

7 0

2 years ago

What is $7.50 admission; 20% off; 5.75% tax

Dvinal [7]

Hello, the answer you are looking for is $6.35. To get the answer, first do 7.50 divided by 5, is 1.50 off the admission that is 20% off then $7.50-1.50= $6 then you do 6 divided by 100= 0.06 x 5.75 % tax you add together total will be $6.35 the answer.

I hope you understand the steps I explain.

4 0

3 years ago

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Marina CMI [18]

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2 years ago

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shutvik [7]