Factor completely 3x2 - 21.

Answers

Answer 1

Answer: 3x² - 21

Factor 3 from both terms:

3 (x² - 7)

To me, that's as far as you should need to go. But if you want to get
completely carried away, you could go one step further, since you have
the difference of two squares:

3 (x + √7) (x - √7)

Of course, there's no end now, because the last binomial could be
considered another difference of two squares, so you'd have to
factor that too:

3 (x + √7) (√x + ⁴√7) (√x - ⁴√7)

but to me, this would be nonsense.

Answer 2

Answer: $3x^2-21=3(x^2-7)=3[x^2-(\sqrt7)^2]=3(x-\sqrt7)(x+\sqrt7)$

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Answers

Answer:

y=8

x=20

Step-by-step explanation:

8y+6=70

5x-10=90

because(language persian or farsi)

چون که شکل متوازی الاضلاع است پس دو زاویه مجاور مکمل هستند

همچنین چون feوgh دو خط موازی هستند xhg میشود 70 درجه

Brooke is 5ft tall. She is looking for a tree that is 50 ft tall. Her shadow is 2 ft tall , how will she know when she finds a tree that is 50ft tall

Answers

We'll need to know the LENGTH of her shadow. Its tallness doesn't help, and is pretty weird anyway.

1 42 8
3 12
4 16
5 20
And the function graph above what is the input what is the output

Answers

$(1, 4), \ \ (2 , 8 ) \n \n slope \n \n m = (8-4)/(2-1)=(4)/(1)=4 \n \ny=ax+b$

$4=4*1+b\n \nb=4-4\n \nb=0 \n \ny=4x$

How many cups in 240 fl oz

Answers

30 cups one cup is 8 ounces so divide 8 by 240

Answer:

30 cups

There is 8 fl oz per every 1 cup.

What are three equivalent ratios for 18/6, 5/45, and 3/5?

Answers

18/16 : 9/8; 27/24; 36/32

5/45 : 1/9; 2/18; 3/27

3/5 : 6/10; 12/20; 24/40

hope that helps

Explanation: Ratio table is the tabular representation of equivalent ratios. Ratio is the relation between quantity, degree or rate between one thing and another.

18/6: 9/8, 27/24, 36/32 ←

5/45: 1/9, 2/18, 3/27 ←

3/5: 6/10, 12/20, 24/40 ←

Hope this helps!

Thanks!

Have a great day!

What is the value of x?
3(x-2)+5x=18

Answers

3(x-2) + 5x = 18
3x-6+5x=18
8x=18+6
x=24/8
x=3
:)

3x - 6 + 5x = 18
8x - 6 = 18
8x = 24

x = 3

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