Answer:
add 21 to both sides to get everything on one side
x^2 - 10x + 21 = 0
do factorization, guess and check
(x - 7) (x -3) = 0
x =7, and x =3
A. -f(1)=1,f(2)=2,f(n)=2f(n-1)f(n-2);n>2
Answer:
96, 672 yards
Step-by-step explanation:
Volume = Length · width · height
Volume = 114 · 212 · 4
Volume = 96, 672 yards
Answer:
75%
Step-by-step explanation:
The angstrom<span>, also known as the </span>angstrom<span> unit, is a measure of displacement equal to 0.0000000001 meter (10 -10 m). It would be helpful to convert the units of angstrom to mm. We do as follows:
diameter = 2 x 1.35 x10^ -10 m ( 1000 mm / 1 m ) = 2.7 x 10^-10 mm / atom
Number of gold atoms = 8.5 mm / </span>2.7 x 10^-10 mm / atom = 31481481481.481 atoms
