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3 years ago

11. A video receives 10,678 views the first day. It receives

Mathematics

1 answer:

Korolek [52]3 years ago

8 0

Answer:15,260

Step-by-step explanation:

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Bob works at a construction company. He has an equally likely chance to be assigned to work diffrent crews every day. He can be

Sergio [31]

The answer is 6 times

7 0

3 years ago

A: What are the solutions to the quadratic equation x2+9=0? B: What is the factored form of the quadratic expression x2+9? Selec

Paraphin [41]

Answer:

A. The solutions are $x=3i,\:x=-3i$ .

B. The factored form of the quadratic expression $x^2+9=(x-3i)(x+3i)$

Step-by-step explanation:

A. To find the solutions to the quadratic equation $x^2+9=0$ you must:

$\mathrm{Subtract\:}9\mathrm{\:from\:both\:sides}\\\\x^2+9-9=0-9\\\\\mathrm{Simplify}\\\\x^2=-9\\\\\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\x=\sqrt{-9},\:x=-\sqrt{-9}$

$x=\sqrt{-9} = \sqrt{-1}\sqrt{9}=\sqrt{9}i=3i\\\\x=-\sqrt{-9}=-\sqrt{-1}\sqrt{9}=-\sqrt{9}i=-3i$

The solutions are:

$x=3i,\:x=-3i$

B. Two expressions are equivalent to each other if they represent the same value no matter which values we choose for the variables.

To factor $x^2+9$ :

First, multiply the constant in the polynomial by $i^2$ where $i^2$ is equal to -1.

$x^2+9i^2$

Since both terms are perfect squares, factor using the difference of squares formula

$a^2-i^2=(a+i)(a-i)$

$x^2+9=x^2+9i^2=\left(-3i+x\right)\left(3i+x\right)$

5 0

2 years ago

11. If f(x)=4x-9, what is the equation for f^-1(x)?

FrozenT [24]

F(x) = 4x - 9

let f(x) = y, this implies that x = f⁻¹(y)

y = 4x - 9 Let us solve for x.

4x - 9 = y

4x = y + 9

x = (y + 9)/4

Recall that x = f⁻¹(y),

x = (y + 9)/4

f⁻¹(y) = (y + 9)/4

That means that for f⁻¹(x)

f⁻¹(x) = (x + 9)/4

Hope this explains it.

3 0

2 years ago

Find the perimeter of a square equal in area to two squares whose sides are 12 m and 5 m respectively

KatRina [158]

Formula for perimeter a+b+a+b

12+5+12+5= 17+17= 34 .34=P

5 0

3 years ago

If your dog weighs 32 kilograms (kg), how many milligrams (mg) is this?

Tatiana [17]

Answer:

milligram would be 3.2e+7 or if not 3.2

7 0

1 year ago

Read 2 more answers