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4 years ago

Let f(x)=x^2 - 3x - 4 . What is the average of change from x=7 to x=10?

1 answer:

3 0

You need to calculate the following expression:

f(b) - f(a) [(10)^2-3(10)-4]-[(7)^2-3(7) -4]
--------------- , which in this case is: ------------------------------------------
b - a 10-7

Be sure to do the calculations inside each set of square brackets separately BEFORE attempting the subtraction in [(10)^2-3(10)-4] - [(7)^2-3(7) -4]

By the way: You mean "average rate of change," not "average of change."

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Six subtracted from a number

Klio2033 [76]

Answer:

X-6

Step-by-step explanation:

Represent the unknown number with a variable then introduce the minus sign

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3 years ago

Part C

makkiz [27]

a = 1, b =14 and y-coordinate is 6 when x = 0.

Solution:

Let us first write the equation of a line.

Take the points are (2, 2) and (6, 10).

Slope of the line:

$$m=\frac{y_2-y_1}{x_2-x_1}$

$$m=\frac{10-2}{6-2}$

$$m=\frac{8}{4}$

m = 2

Point-slope formula:

$y-y_1=m(x-x_1)$

y - 10 = 2(x - 2)

y - 10 = 2x - 4

Add 10 on both sides,we get

y = 2x + 6

Equation of a line is y = 2x + 6.

To find (a, 8), substitute x = a and y = 8 in the equation,

8 = 2a + 6

Subtract 6 from both sides, we get

2 = 2a

a = 1

To find (4, b), substitute x = 4 and y = b in the equation,

b = 2(4) + 6

b = 8 + 6

b = 14

Substitute x = o in the equation.

y = 2(0) + 6

y = 6

The y-coordinate is 6 when x = 0.

7 0

3 years ago

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MaRussiya [10]

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3 years ago

Geometry; cosines/ Sines. Find the value of x and round to the nearest tenth. Include explanation. All bogus answers will be rep

ipn [44]

In this problem you only need to find the x value of one triangle. If you notice, this is a rectangle that has been cut in half by a diagonal into two equal right triangles. So both the top and bottom part are equal to 500 and both have an angle equal to 10 degrees.

Now looking at the problem, you would have to use tangent since 500 is adjacent and your X value is opposite.

Tan(10) = (X/500)

Now solve by multiplying each side by 500

X= Tan(10) 500 put this in a calculator

Answer is 88.2 degrees

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3 years ago

Katie practiced the flute for 45 minutes then she ate a snack for 15 minutes next she watched television for 30 minutes until 6:

s344n2d4d5 [400]

4:30 because when you add the minutes then subtract the sum from ^:00 that is answer you get

5 0

3 years ago

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