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Novosadov [1.4K]
3 years ago
7

Find the average rate of change for f(x) = x2 + 9x + 18 from x = −10 to x = 10.

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
7 0
The average rate of change formula is 
           f(b) - f(a)
arc = ----------------
               b-a
                    
Here, a= -10 and b = 10

                   (10)^2 + 9(10) + 18 - [ (-10)^2 + 9(-10) + 18]
Here arc = --------------------------------------------------------------
                                     10 - (-10)

10^2 and -(-10)^2 cancel.     18 - 18 cancel.

                                               90 - (-90)            180
This leaves us with     arc = ----------------- = ------------- = 9 (answer)
                                                   20                     20
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Correct answers only please!
MrRissso [65]

Answer:

23.6°

Step-by-step explanation:

In this question we have to use some trigonometry to work out angle XVW. Since we are working out angles all of the trigonometric functions will have to be to the ⁻¹. The first thing we need to identify is will formula will we use out of the following:

Sin⁻¹ = Opposite ÷ Hypotenuse

Tan⁻¹ = Opposite ÷ Adjacent

Cos⁻¹ = Adjacent ÷ Hypotenuse

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10 = Hypotenuse

4 = Opposite

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We know which formula to use because the length won't be in the triangle for example we will be using the Sin triangle because we don't have an adjacent. If we don't have an adjacent then the other formula's won't work.

Now we substitute in the values to find the value of angle XVW

Sin⁻¹ = Opposite ÷ Hypotenuse

Sin⁻¹ = 4 ÷ 10

The value of angle XVW is 23.57817848

6 0
2 years ago
This really hard help please
bonufazy [111]

Answer:

is it 4.8, I don't really know

8 0
3 years ago
Find the area of ABC with vertices A(3,-6), B(5,-6), and C(7,–9).
stellarik [79]

Area of a triangle ABC with the given vertices is 3 square units.

Given that, the vertices of a triangle ABC, A(3,-6), B(5,-6), and C(7,–9).

<h3>What is the area of triangle formula in coordinate geometry?</h3>

In Geometry, a triangle is a three-sided polygon that has three edges and three vertices. The area of the triangle is the space covered by the triangle in a two-dimensional plane.

Area of a triangle = \frac{1}{2} ( |x_1(y_2 - y_3) + x_2(y_3 - y_1) + x_3(y_1 - y_2)|)

Here, (x1, y1) = A(3,-6), (x2, y2) = B(5,-6), and (x3, y3) = C(7,–9)

Now, the area of a triangle = 1/2 (|3(-6+9)+5(-9+6)+7(-6+6)|)

= 1/2 (|3(3)+5(-3)+7(0)|)

= 1/2 (|(9-15)|)

= 1/2 × 6

= 3 square units

Therefore, area of a triangle ABC with the given vertices is 3 square units.

To learn more about the area of a area of triangle with vertices visit:

brainly.com/question/26633662.

#SPJ1

7 0
1 year ago
The table shows the charges for a catering service. Based on the pattern in the table, calculate the charge for catering a party
Artist 52 [7]

the answer is B because to get the total cost, first divide 450 by 50. This gives us 9. We then multiply 9 by $600 to get a total of $5400.

7 0
3 years ago
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The sum of two numbers is 53 and the difference is 11. What are the numbers ?
eimsori [14]
The numbers are 32 and 21
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32 - 21 = 11
7 0
3 years ago
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