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4 years ago

What is 3(9-3r)= simplifyed

Mathematics

2 answers:

Gwar [14]4 years ago

6 0

27-9r
explaintion:
3•9+3•-3r
27+3•-3r=
27-9r

galben [10]4 years ago

6 0

Answer:

r = 4

Step-by-step explanation:

Simplifying

3r + -3 = 9

Reorder the terms:

-3 + 3r = 9

Solving

-3 + 3r = 9

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '3' to each side of the equation.

-3 + 3 + 3r = 9 + 3

Combine like terms: -3 + 3 = 0

0 + 3r = 9 + 3

3r = 9 + 3

Combine like terms: 9 + 3 = 12

3r = 12

Divide each side by '3'.

r = 4

Simplifying

r = 4

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A(t) = (t – k)(t - 3)(t - 6)(t + 3) is a polynomial function of t, where k is a constant.

mr Goodwill [35]

the absolute value of the product of the zeros of a is $-108$ .

<u>Step-by-step explanation:</u>

Here we have , $a(t) = (t - k)(t - 3)(t - 6)(t + 3)$ is a polynomial function of t, where k is a constant. Given that a(2) = 0 . We need to find the absolute value of the product of the zeros of a . Let's find out:

Equation every factor of a(t) to zero we get:

⇒ $a(t) = (t - k)(t - 3)(t - 6)(t + 3) = 0$

⇒ $(t - k) =0\\(t - 3)=0\\(t - 6)=0\\(t + 3) = 0$

⇒ $t =k\\t =3\\t = 6\\t =- 3$

But , t=2 So , $k=2$ . Now , the absolute value of the product of the zeros of a is :

⇒ $k(3)(6)(-3)$

⇒ $2(3)(6)(-3)$

⇒ $-108$

Therefore, the absolute value of the product of the zeros of a is $-108$ .

4 0

3 years ago

The table below gives the completion percentage and interception percentage for five randomly selected NFL quarterbacks. Based o

Lina20 [59]

The regression equation is y = -0.42647x + 29.11471 and the correlation coefficient is -0.9607

<h3>How to determine the regression equation?</h3>

The table of values is given as:

Completion Percentage 57 59 62 63 64

Interception Percentage 5 3.5 3 2.5 1.5

Next, we enter the above values in a graphing calculator.

From the graphing calculator, we have the following summary:

Sum of X = 305
Sum of Y = 15.5
Mean X = 61
Mean Y = 3.1
Sum of squares (SSX) = 34
Sum of products (SP) = -14.5
r = -0.9607

Regression Equation = ŷ = bX + a

b = SP/SSX = -14.5/34 = -0.42647

a = MY - bMX = 3.1 - (-0.43*61) = 29.11471

So, the regression equation is

y = -0.42647x + 29.11471

And the correlation coefficient is -0.9607

Read more about regression at:

brainly.com/question/14313391

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2 years ago

Write an algebraic expression for: The quotient of a number and twelve.

Arisa [49]

The quotient of a number and 12

Quotient means division.

The answer is C.) n/12

If you have any questions feel feee to ask.

Hope this helps.

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3 years ago

Read and solve please thank you!

MariettaO [177]

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Step-by-step explanation:

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olasank [31]

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