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Arte-miy333 [17]
4 years ago
6

You have a map of an area in France. The scale used is 2cm:8km. You want to ride to a national park. The park is shown on the ma

p as 16 cm away.
How far is that in kilometres?
Mathematics
1 answer:
slega [8]4 years ago
8 0

Divide the distance on the map by 2 to get the number of 8km segments there are, then multiply that by 8km for total distance.

16 cm / 2cm = 8

8 x 8km = 64km total.

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Rewrite the function in standard form, intercept form, find the vertex, find the y-intercept, and find the x-intercepts.
jasenka [17]

Answer:

We have the function, f(x)=(x+3)^{2}-4

On simplifying, we get,

f(x)=x^2+6x+9-4

i.e. f(x)=x^2+6x+5

Thus, the standard form of the function is f(x)=x^2+6x+5.

Now, the factors of the given functions are (x+1) and (x+5).

<em>Since, the intercept form of the function is the factored form of the function.</em>

So, we have, intercept form of the function is f(x)=(x+1)(x+5).

Now, we know that,

Value of x-coordinate of the vertex is \frac{-b}{2a} i.e. \frac{-6}{2\times 1} i.e. \frac{-6}{2} i.e. x= -3

Then, f(-3)=(-3)^2+6\times (-3)+5 i.e. f(-3)=9-18+5 i.e. f(-3)=-4

So, the vertex of the function is (-3,-4).

Further, we know that,<em> 'the y-intercept of a function is the point where the function crosses y-axis'.</em>

So, when x=0, we have, f(0)=0^2+6\times 0+5 i.e. f(0) = 5

Thus, the y-intercept is (0,5)

Also, <em>'the x-intercept of a function is the point where the function crossese x-axis'.</em>

Then, for f(x)=0, we have 0=x^2+6x+5 i.e. 0=(x+1)(x+5) i.e. x= -1 and x= -5

Thus, the x-intercept are (-1,0) and (-5,0).

8 0
3 years ago
What is the volume of this rectangular prism?
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Answer:

15.625

Step-by-step explanation:

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7 0
3 years ago
Of the cost price of 10 chair is equal to the price of 16 chairs, find the loss or gain percenatge.​
rodikova [14]

Answer:

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Step-by-step explanation:

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7 0
3 years ago
Identify the graph of the equation. What is the angle of rotation for the equation? (Picture provided)
Ronch [10]

Answer:

The equation is that of ellipse withe angle of rotation 30° ⇒ answer (d)

Step-by-step explanation:

* Lets talk about the general form of the conic equations

- Ax² + Bxy + Cy² +D = 0 (center is the origin)

- A is the coefficient of x² , B is the coefficient of xy

 C is the coefficient of y² , D is the numerical term

* Now we will study how to know the type of the graph of this equation

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∴ The equation is that of an ellipse

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∴ The equation is on a hyperbola

* Now look at the equation:

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∵ A = 13 , B = 6√3 , C = 7 , D = -16

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∴ The equation is that of an ellipse

* Now lets find the angle of rotation by using the Rule:

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∴ 2Ф = tan^{-1}\sqrt{3}=60

∴ 2Ф = 60° ⇒ divide both sides by 2

∴ Ф = 30°

∴ The angle of rotation is 30°

∴ The equation is that of ellipse withe angle of rotation 30°

* The graph represent the ellipse

- The purple line represents the angle of rotation

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3 years ago
The graph of f(x) = 2x + 1 is shown below. Explain how to find the average rate of change between x = 0 and x = 3.
Irina-Kira [14]
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3 0
3 years ago
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