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MariettaO [177]
2 years ago
14

What is the period of the function f(x) = -4 cos(5x-9) - 7? Give an exact value. units

Mathematics
2 answers:
ehidna [41]2 years ago
5 0

Answer:

2pi/5

Step-by-step explanation:

The only thing in this equation that affect the period is the '5' in front of the 'x'

cos period is usually 2pi

 this is compressed by 5    

    period = 2pi/ 5

N76 [4]2 years ago
4 0

General equation

  • y=Acos(Bx+C)+D

Our Equation

  • y=-4cos(5x-9)-7

On comparing

  • A=-4
  • B=5
  • C=-9
  • D=-7

Now

Period

  • 2π/B
  • 2π/5
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Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

Practice throws(X) : 4 10 6 15 0 7 11

Free throws(Y) : 8 23 9 34 5 11 27

Using the online linear regression calculator :

ŷ = 2.1559X + 0.3912

2.1559 = slope

0.3912 = intercept

X = independent variable ; y = dependent variable

The Coefficient of determination (R²) = 0.9506² = 0.9036

Quadratic model : y = 0.0961x²+0.7138x+3.8031

Coefficient of determination(R²) = 0.9739² = 0.9485

Exponential model:

a*b^x

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7 0
3 years ago
Paul and his family are discussing how to pay for his college education. The cost of tuition at the college that Paul wants to a
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Answer:

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Step-by-step explanation:

6 0
3 years ago
If x=7cm what is the surface area of the geometric shape formed by this net
Mekhanik [1.2K]
There are four rectangles and 2 squares.

Let’s start with the four rectangles.
4 [ 2x(x)]
4 [ (2*7)(7)] = 392 cm^2
______________

Next, let’s find the SA for the two squares.
2 [(2x)^2]
** I need to be clear that both the 2 and the x in the parentheses are squared because the square, of course, is a “perfect square”. This was probably obvious and needless to say, haha oh well.
Next step: plug in values
2 [ [2(7)]^2 ] = 392 cm^2

TOTAL: 392+392 = 784 cm^2

Wow I should have realized the the 4 rectangles are the area as the two squares.

Good luck to you!
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7 0
3 years ago
100 points, Please help ASAP. Answer correctly thanks
sergey [27]

Answer:

\Huge \boxed{\mathrm{7. \ C}} \\\\ \\ \Huge \boxed{\mathrm{8. \ B}} \\\\\\ \Huge \boxed{\mathrm{9. \ D}} \\\\\\ \Huge \boxed{\mathrm{10. \ D}} \\\\\\ \Huge \boxed{\mathrm{11. \ A}}

\rule[225]{225}{2}

Step-by-step explanation:

<h3>7.</h3>

The Commutative Property of Addition changes the order of the numbers but does not affect the sum.

<h3>8.</h3>

We will convert the values into decimals for simplicity.

\sqrt{7} \approx 2.65

\sqrt{3} \approx 1.73

\displaystyle  \frac{-1}{3} \approx -0.33

Arranging from least to greatest:

\displaystyle -2.3, \ \frac{-1}{3} , \ \sqrt{3} , \ \sqrt{7} , \ 5.1

<h3>9.</h3>

2 + ( -8 )

2 is on the number line.

When -8 is added to 2, the value decreases, and it moves 8 units to the left side.

The result is -6.

(image)

<h3>10.</h3>

The two subsets of real numbers are rational and irrational numbers.

\sqrt{13} is an irrational number.

<h3>11.</h3>

\displaystyle \frac{12x-8}{4}

\displaystyle \frac{12x}{4}-\frac{8}{4}

3x-2

\rule[225]{225}{2}

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3 years ago
How do you divide mixed numbers
Luda [366]
Numerator is the dividend and denominator is the divider
4 0
3 years ago
Read 2 more answers
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