Answer:
5
Step-by-step explanation:
let positive integer be x
x² + 3(x+1)=43
x²+3x+3-43=0
x² + 3x - 40 = 0
x² + 8x - 5x - 40 = 0
x(x+8) - 5(x+8)=0
(x-5)(x+8)=0
x-5=0 or x+8=0
x=5. or x=-8
but the question says positive integer,
therefore, x=5
the integer is 5
x^2+3(x+1)=43
x^2+3x+3=43
x^2+3x+(9/4)=43-3+(9/4)
(x+(3/2))^2=42 1/4
x+(3/2)=sqrt(42 1/4)
x+(3/2)=6 1/2
x=(6 1/2)-(3/2)
x=5
check:
5^2+3(6)=43
25+18=43
43=43
A =
45 =
45/ =
14.3 =
r = 3.8
i think it is 50ft but i'm not too sure
if you take the 100ft and than use the 20 degrees and divide them you get 50 ? so maybe, just 100 divided by 20
Speed is equals to distance divided by time
ie
45 ÷ 3
you get 15 miles per hour
