3x+2 (5x-1)=11
3x +10x -2=11
3x+10x=13
13x=13
X=1
20%.
20,000 times 0.8 is 16,000, so the decreased value that was lost was 20% of the original price.
Answer:
π is the constant ...... circle to its circumference
π is the area .... radius 1
Step-by-step explanation:
π is a mathematical constant, defined as ratio of circle's circumference to its diameter.
π is area of circle of radium 1. Area = π r^2 = π (1)^2 = 1
Because -7i and 7i are the solutions to the quadratic equation, you can first write it in factored form (x-7i)(x+7i). The you multiply this out and get x^{2} +49.
Answer:
21
Step-by-step explanation:
Try using this notation: a(n) and not an.
an=n^3-2n becomes a(n) = n^3 - 2n.
Then a(1) = 1^3 - 2(1) = 1 - 2 = -1
a(2) = 2^3 - 2(2) = 8 - 4 = 4
a(3) = 3^3 - 2(3) = 27 - 6 = 21
