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Ratling [72]
2 years ago
7

• function notation• these are so confusing

Mathematics
1 answer:
lukranit [14]2 years ago
3 0

Answer:

15

Step-by-step explanation:

Just substitute the x for 5
In this case:

Original function: f(x) = x^{2} - 2x

Substitute function: f(5) = (5)^{2} - 2(5)

Now solve for the substitute function

(5)^{2} - 2(5)

25 - 10

15

Therefore, f(5) is equal to 15

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An equation is shown.<br> 18+ 5(2x + 5) = 12<br> Solve the equation for x.
andriy [413]

Step-by-step explanation:

18+ 5(2x + 5) = 12

18 + 10x + 25 = 12

43 + 10x = 12

10x = 12 -43

10x = -31

x = -3.1

7 0
3 years ago
The total area of the polygon is 176 square feet. Find the value of x.
My name is Ann [436]

Answer:

x = 6 ft

Step-by-step explanation:

Total area of the given polygon = Area of triangle 1 + Area of rectangle 2 + Area of triangle 3

Area of triangle 1 = Area of triangle 3 = \frac{1}{2}(\text{Base})(\text{Height})

                                                              = \frac{1}{2}(x)(8)

                                                              = 4x square feet

Area of rectangle 2 = Length × Width

                                 = 16 × 8

                                 = 128 square feet

Total area of the given polygon = 4x + 128 + 4x

176 = 8x + 128

8x = 176 - 128

x = \frac{48}{8}

x = 6 ft

5 0
3 years ago
Read 2 more answers
What is the median for 252,210,264,278,208,295,248,257,284,271....expressed to the nearest tenth.
babymother [125]

Answer:

260.5

Step-by-step explanation:

7 0
3 years ago
How manufacturing time does the graph of the function below intersect or touch the x-axis y=-2x^2+3x+5
soldi70 [24.7K]
The graph intersects the x-axis twice.  It intersects at the points of (-1,0) and (2.5,0). The graph is attached.

7 0
3 years ago
Find and simplify the difference quotient f(x + 1) – f(x) for the following function.
ra1l [238]

In your situation you said that

  • f(x) = mx+b
  • m=0

Putting those together, you'd have f(x) =  b because 0\cdot x+b=b.

To evaluate the difference quotient, first find each piece on it's own:

  • f(x+1) = b because f(x) = b no matter what your x-value is.
  • f(x) = b

So putting those together:

     f(x+1) - f(x) = b-b = 0

Remember that the difference quotient is basically finding the slope of something.  Since you were given that the slope is 0, the difference quotient should work out to match that.

3 0
3 years ago
Read 2 more answers
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