<span>Since each population is represented by the area then the area is equal to the population of whatever city. So the are of the Texas circle is 28,240,245 and that rounded of to the nearest tenth is 28,240,250. To find the radius of whatever city you must use the formula for find area of a circle which is A = πr^2, where r is the radius. Make the r the subject of the formula, to do that you divide both sides of the equation by π, this will make the π on the right side cancel out and the final equation will be
A/Ď€ = r^2, then square root both sides to get rid of the squared exponent on the r then the final equation will be sqr(A/Ď€) = r. So you replace the A with the area or the population of the city want in this case Texas, you will end up with this equation, sqr(28,240,250/Ď€) = r. The radius of the Texas circle is 2998.19 but that rounded to the nearest tenth is 3,000.</span>
Answer:
(a-1) *(a^2 +a-1) (a+2)
Step-by-step explanation:
a^4+2a^3-a-2
Lets factor by grouping
a^4-a + 2a^3-2
Factor out an a from the first group and a 2 from the second group
a(a^3 -1) +2(a^3-1)
Factor out (a^3-1)
(a^3-1)(a+2)
We need to recognize that a^3-1 is the difference of cubes
(x^3-y^3) = (x-y) (x^2+xy+y^2)
Let x=a and y=1
(a-1) *(a^2 +a-1) (a+2)
It has one solution that is the answer
Answer:
52°
Step-by-step explanation:
By remote interior angle theorem of a triangle:
115° = 63° + x° ( x is the vertical angle of one interior angle of the triangle)
x° = 115° - 63°
x° = 52°
x = 52