Answer:
x² - 20 = 0
Using the quadratic formula

a = 1 b = 0 c = -20
So we have

Hope this helps you.
Answer:

Step-by-step explanation:
Given, f ( x ) = - x - 3
Let's find the value of f ( - 4 )

We know that , 
⇒
Subtract 3 from 4
⇒
Hope I helped!
Best regards!!
Answer:

Step-by-step explanation:
separate with like terms

the first fraction can be left alone as it can't be simplified any further
the second fraction can be written as w⁹ ÷ w¹ , when the bases are the same and division is involved subtract the powers: 9 - 1 = 8, so it's simplified to w⁸
the third fraction can be written as m⁵ ÷ m⁹, subtract the powers: 5 - 9 = -4, so it's simplified to m⁻⁴

putting it together:

If it’s 3% that’s 36% a year which means 360% in ten years. $2000+360%=$9200
Answer:
No, because 3 x 7 = 21 - 4 = 17
Step-by-step explanation: