Bytelearn - cat image with glassesAI tutor

Welcome to Bytelearn!

Let’s check out your problem:

What is the area of the region bound by the graphs of 
f(x)=-x^(2),g(x)=3x-10, and 
x=0 in quadrant IV?
Choose 1 answer:
2

(8)/(3)
(C) 
(16)/(3)
(D) 
(34)/(3)

What is the area of the region bound by the graphs of f(x)=x2,g(x)=3x10 f(x)=-x^{2}, g(x)=3 x-10 , and x=0 x=0 in quadrant IV?\newlineChoose 11 answer:\newline22\newline83 \frac{8}{3} \newline(C) 163 \frac{16}{3} \newline(D) 343 \frac{34}{3}

Full solution

Q. What is the area of the region bound by the graphs of f(x)=x2,g(x)=3x10 f(x)=-x^{2}, g(x)=3 x-10 , and x=0 x=0 in quadrant IV?\newlineChoose 11 answer:\newline22\newline83 \frac{8}{3} \newline(C) 163 \frac{16}{3} \newline(D) 343 \frac{34}{3}
  1. Identify Intersection Points: Identify the points of intersection between the parabola f(x)=x2f(x) = -x^2 and the line g(x)=3x10g(x) = 3x - 10. To find the points of intersection, set f(x)f(x) equal to g(x)g(x): x2=3x10-x^2 = 3x - 10
  2. Solve Equation for x: Solve the equation x2=3x10-x^2 = 3x - 10 for xx.\newlineRearrange the equation to form a quadratic equation:\newlinex2+3x10=0x^2 + 3x - 10 = 0
  3. Factor or Use Quadratic Formula: Factor the quadratic equation or use the quadratic formula to find the roots.\newlineThe quadratic factors as (x+5)(x2)=0(x + 5)(x - 2) = 0, so the roots are x=5x = -5 and x=2x = 2.
  4. Determine Root in Quadrant IV: Determine which root is in quadrant IV.\newlineSince quadrant IV is where xx is positive and yy is negative, we only consider the root x=2x = 2.
  5. Calculate Area of Region: Calculate the area of the region bound by the graphs and x=0x=0. The area is a trapezoid with vertices at (0,0)(0,0), (2,0)(2,0), (2,4)(2,-4), and (0,10)(0,-10). The two bases of the trapezoid are on the yy-axis and the line g(x)g(x), and the height is the distance along the xx-axis from x=0x=0 to x=2x=2.
  6. Find Lengths of Bases: Find the lengths of the bases.\newlineThe length of the base on the y-axis is the y-value of g(x)g(x) at x=0x=0, which is g(0)=10g(0) = -10.\newlineThe length of the base on the line g(x)g(x) is the y-value of g(x)g(x) at x=2x=2, which is g(2)=3(2)10=4g(2) = 3(2) - 10 = -4.
  7. Calculate Height of Trapezoid: Calculate the height of the trapezoid. The height is the distance between x=0x=0 and x=2x=2, which is 22 units.
  8. Use Area Formula: Use the formula for the area of a trapezoid, A=12(b1+b2)hA = \frac{1}{2}(b_1 + b_2)h, where b1b_1 and b2b_2 are the lengths of the bases and hh is the height.\newlineSubstitute the values into the formula:\newlineA=12(10+(4))(2)A = \frac{1}{2}(-10 + (-4))(2)
  9. Simplify to Find Area: Simplify the expression to find the area.\newlineA=12(14)(2)A = \frac{1}{2}(-14)(2)\newlineA=14A = -14

More problems from Operations with rational exponents