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tigry1 [53]
2 years ago
8

Find the solution by graphing or from the graph y=x2-2x-8 how do you do this?

Mathematics
1 answer:
Tomtit [17]2 years ago
3 0

Answer:

-2 and 4

Step-by-step explanation:

Graph it using a graphing calculator.  The solutions are the points where the graph crosses the x-axis.

I attached a photo of the graph, you can see that the graph crosses the x-axis at points -2 and 4

These are the solutions!

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A pyramid shaped building is 311 feet tall and has a square base with sides of 619 ft. The sides of the building are made from r
zmey [24]

Answer:

Surface area of the reflective glass is 543234.4 square feet.

Step-by-step explanation:

Given that: height = 311 feet, sides of square base = 619 feet.

To determine the slant height, we have;

l^{2} = 311^{2} + 309.5^{2}

   = 96721 + 95790.25

   = 192511.25

⇒ l = \sqrt{192511.25}

      = 438.761

The slant height, l is 438.8 feet.

Considering one reflecting surface of the pyramid, its area = \frac{1}{2} × base × height

  area =  \frac{1}{2} × 619 × 438.8

          = 135808.6

          = 135808.6 square feet

Since the pyramid has four reflective surfaces,

surface area of the reflective glass = 4 × 135808.6

                                                          = 543234.4 square feet

4 0
2 years ago
Start fraction two minus five x over negative three end fraction plus four less than negative x
Charra [1.4K]
2 - 5x
-------     + (-x - 4)
  -3
8 0
3 years ago
Which number should replace the question mark in the number grid below?
-Dominant- [34]
B. 5

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4 0
3 years ago
Find the equation of the linear function represented by the table below in slope-
pav-90 [236]

Answer: y=-3x-2

Step-by-step explanation:

Using the values x=-2, y=4 and x=1, y=-5, the slope is \frac{-5-4}{1-(-2)}=-3.

So, the equation is:

y-4=-3(x+2)\\\\y-4=-3x-6\\\\y=-3x-2

3 0
1 year ago
I need to find the product of f and g. what is the domain and range of the product
velikii [3]

Step-by-step explanation:

Putting both functions into a graphing calculator, we can easily find the domain and range. (attatched)

By looking at the graph, we can tell that f(x) is a quadratic function because of the symmetry. We can also tell that it never goes below 4. Knowing this, we can determine the domain and range.

Domain: {x | all real numbers}

Range: {y | y > 4}

By looking at the graph, we can tell that g(x) is an exponential function because it has a curve, and never goes below the x. Knowing this, we can determine the domain and range.

Domain: {x | all real numbers}

Range: {y | y > 0}

7 0
3 years ago
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