4 years ago

What is the solution to the system of equations?

Mathematics

1 answer:

mezya [45]4 years ago

7 0

B is the right answer

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

goblinko [34]

For this case we have the following functions:
$f(x) = 2x^2 + 3x

g(x) = x - 2$
The first thing we must do is calculate the sum of functions or equivalently:
$(f + g)(x) = f(x) + g(x)
$
We have then:
$(f + g)(x) = (2x^2 + 3x) + (x - 2)
$
To complete the sum, we must add the terms whose exponents are equal.
We have then:
$(f + g)(x) = 2x^2 + (3x + x) - 2

(f + g)(x) = 2x^2 + 4x - 2$
Then, we evaluate the function for x = 2:
$(f + g)(2) = 2(2)^2 + 4(2) - 2
$
Rewriting we have:
$(f + g)(2) = 2(4) + 4(2) - 2

(f + g)(2) = 8 + 8 - 2

(f + g)(2) = 14$
Answer:
$(f + g)(2) = 14
$

4 0

3 years ago

F(x)=-x^2-5 find the range

lina2011 [118]

$x = \frac{ - b}{2a} \\ = \frac{0}{2(1)} = 0 \\ f(0) = (0)^{2} - 5 \\ = 0 - 5 = - 5$
The vertex is at (0,-5), therefore the range goes from (-infinity, - 5]

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3 years ago

What is the area of rectangle with side lengths of 5/12 foot and 2/3 foot?

bija089 [108]

Answer:

The answer is 5/18

Step-by-step explanation:

5 0

3 years ago

Help with this I need help

Pepsi [2]

Answer:

Dot Plot

Step-by-step explanation:

Just start marking off the numbers from left to right until you get to the middle.

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3 years ago

(w^2 – 6w)^2– 2(w^2 – 6w) – 35 = 0

muminat

Step-by-step explanation:

$( {w}^{2} - 6w {)}^{2} - 2( {w}^{2} - 6w) - 35 = 0 \\ = {w}^{4} - 6 {w}^{2} - 2 {w}^{2} - 12w = 35 \\ = {w}^{4} - 4 {w}^{2} - 12w = 35$

4 0

4 years ago