Answer:
A
Step-by-step explanation:
8294/286
Central angles are subtended by an arc between those two points, and the arc length is the central angle of a circle of radius one. The central angle is also known as the arcs angular distance.
Ok so first find the area on the triangle where is gives the length and width and the formula for the area of a triangle is Length x widthsx 0.5 so 5.2x8x0.5=20.8 square inches . Then to find the area of the other triangle you have to use Pythagorean’s theorem to find the length because we know the hypotenuse is 6.8 and the width is the same as the other side so width is 5.2 the we will do a^2=c^2-b^2 so a^2=6.8^2-5.2^2 a^2=46.24-27.04 a^2= 19.2 and the square root of 19.2= 4.38 so find the area of that triangle 5.2x4.38x0.5=11.4 square inches then add the two areas together to get 32.2 square inches
Solve: 2x - 3 = x^2 - 5 (at least, this is my interpretation of your 2 x -3).
x^2 - 5 - 2x + 3 + 0, or x^2 - 2x - 2 = 0
I will solve this by "completing the square:"
x^2 - 2x +(1)^2 - (1)^2 - 2 = 0, or x^2 - 2x + 1 - 1 - 2 = 0
This is (x-1)^2 = 3. Taking the sqrt of both sides, we get:
x-1 = plus or minus sqrt(3). Then x=1+sqrt(3) or x=1-sqrt(3). These are the two values of x for which 2x - 3 = x^2 - 5 is true.