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Elden [556K]
3 years ago
8

If f(x) = 2х2 + 1, what is f(x) when x = 3? o 1 ООО

Mathematics
1 answer:
Brrunno [24]3 years ago
8 0

<em>f(x) equals 19 when  x = 3</em>

<h2>Explanation:</h2>

Here we have the following function:

f(x)=2x^2+1

And want to know the output of the function when the input is x=3. So let's substitute this x-values into the function:

f(3)=2(3)^2+1 \\ \\ f(3)=2(9)+1 \\ \\ \boxed{f(3)=19}

Finally:

<em>f(x) equals 19 when  x = 3</em>

<em></em>

<h2>Learn more:</h2>

Zeroes of a parabola: brainly.com/question/1469367

#LearnWithBrainly

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What value in place of the question mark makes the polynomial below a perfect square trinomial x^2+24x+?
kykrilka [37]

Answer:

D

Step-by-step explanation:

Perfect square trinomials can be written as (a + b)² = a² + 2ab + b². In this case, we know that a = x so we can write this as x² + 2bx + b². Since we know that 2bx = 24x we can conclude that b = 12, so that means b² = 12 * 12 = 144.

7 0
3 years ago
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How is the Recursive Formula used in real life
OlgaM077 [116]

Answer:

People often sort stacks of documents using a recursive method. For example, imagine you are sorting 100 documents with names on them. First place documents into piles by the first letter, then sort each pile. Looking up words in the dictionary is often performed by a binary-search-like technique, which is recursive.

Step-by-step explanation:

This is just an example.

If this helps please mark as brainliest

4 0
2 years ago
after spending 80% of her daily allowance, Ola found out she had 25k left. How much was her total allowance?
Anestetic [448]

Answer:

31.25 k

Step-by-step explanation:

80 %   *  x = 25 k

.80  x    = 25 k

x   = 25 k / .80 = 31.25 k

8 0
2 years ago
Find an equation for the line parallel to y = 3 x - 2 ​ y-intercept (0,5). Write the answer in​ slope-intercept form.
oksian1 [2.3K]
Y-5= 3(x-0)

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Hope this helps!
7 0
3 years ago
Consider the system of equations.
anzhelika [568]

Answer: You can multiply the top equation by -1 to eliminate the x variable.

And the solution is (2,4/3)  in case you need it.

Step-by-step explanation:

2x + 3y = 8

2x + 6y = 12

If you multiply the upper equation or down equation by one, you will be able to eliminate the x variable.

-1( 2x + 3y) = -1(8)     New equation:   -2x -3y  = -8.

Add the new equation you got  by multiplying the top equation by -1 to the bottom equation.

Add them:     -2x -3y = -8

                      2x + 6y = 12  

                               3y = 4  

                              y = 4/3

You can now input the value for y into the one of the equations and solve for x.

-2x - 3(4/3) = -8

-2x -4 = -8  

     +4     +4

-2x = -4

x = 2

8 0
3 years ago
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