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3 years ago

What is the correct substitution? evaluate. 3m when m = -9 and n = -2

Mathematics

1 answer:

Vinvika [58]3 years ago

8 0

Hi my name is Vanessa i'm Boribaby. I just wanted to let you know that answers A and C are the exact same thing.

I think I know your answer.... if any of your answers say 3(-9)(-2) then that is your answer.

Please know that the percentage of my answer is 50/50. I hope this help!!!! Good luck!!!!

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Factor the expression: x^6-729. Show your work Please.

Brut [27]

Answer:

(x + 3)(x - 3)(x^2 -3x + 9)(x^2 + 3x + 9)

Step-by-step explanation:

Use of formulas:

a^2 - b^2 = (a + b)(a -b)
a^3 + b^3 = (a + b)(a^2 - ab + b^2)
a^3 - b^3 = (a - b)(a^2 + ab + b^2)

Given the expression:

x^6-729

Factoring 729

729 = 3*3*3*3*3*3 = 3^6

Factoring the expression

x^6 - 3^6 =
(x^3)^2 - (3^3)^2 =
(x^3 + 3^3)(x^3 - 3^3) =
(x + 3)(x^2 -3x + 9)(x - 3)(x^2 + 3x + 9) =
(x + 3)(x - 3)(x^2 -3x + 9)(x^2 + 3x + 9)

7 0

3 years ago

Solve the equation x2 = 10.

MatroZZZ [7]

Answer:

$\large\boxed{x=-\sqrt{10}\ or\ x=\sqrt{10}}$

Step-by-step explanation:

$x^2=10\iff x=\pm\sqrt{10}$

8 0

3 years ago

Free points to whoever anwsers first 10+10

faust18 [17]

Answer:

Step-by-step explanation:

Thanks

6 0

3 years ago

Read 2 more answers

8.14÷20 please show work

saul85 [17]

Answer:

0.407

Step-by-step explanation:

0. 4 0 7

2 0 /8. 1 4 0

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6 0

2 years ago

Read 2 more answers

At an archery competition, Aylin hits the target 14 out of 20 tries in round one. If Aylin gets 24 tries in round two, approxima

Andre45 [30]

Answer:

16.8

Step-by-step explanation:

14/20 = 0.7

24 x 0.7 = 16.8

(Feel free to round up or down, or keep it the same depending on the criteria of the question!)

6 0

2 years ago