Answer:20 ft
Step-by-step explanation: i am guessing the you mean the length is 20 feet, so therefor whatever the like is, unless it is not strait, would be he same as the lenth. (im am not 100% on this answer so plx do not use this unless you run out of possibe responces)
Solve 3x−5 = 9:
Add 5 to both sides, to isolate 3x on the left side: 3x = 5+9 = 14
Solve this for x: x = 14/3
Answer: 3k -4
Step-by-step explanation: Just multiply 1/2 by both terms in the expression.
Answer: 7x^2+21x+14
Step-by-step explanation:
(7x+7)(x+2)
Multiply each term in the first parentheses by each term in the second parentheses (FOIL)
7x×x+7x×2+7x+7×2
↘ ↙
7x×x calculate product
7x^2+7x×2+7x+7×2
↘ ↙
7x×2 calculate product
7x^2+14x+7x+7×2
↘↙
7×2 multiply numbers
7x^2+14x+7x+14
↘ ↙
21x collect like terms
7x^2+21x+14 is your end result.