Answer: 50%
Step 1 add 18+20 = 38
Step 2 add 10+9= 19
Step 3 divide 19 by 38 = 2
So if would be half which is equal to 50%
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:
5
Step-by-step explanation:
Answer:
Length: 11 meters
Width: 8 meters
Step-by-step explanation:
11 + 11 + 8 + 8 = 38
8 + 8 = 16
16 - 11 = 5
