9514 1404 393
Answer:
x^2 +4x -21
Step-by-step explanation:
Substitute the given expressions and simplify.
f(x) + g(x)
= (x^2 +3x -28) +(x +7)
= x^2 +(3+1)x +(-28 +7)
= x^2 +4x -21
Answer:
![5.62 + 3.65 + 5.62 + x = 23.59](https://tex.z-dn.net/?f=%205.62%20%2B%203.65%20%2B%205.62%20%2B%20x%20%3D%2023.59%20)
![x = 8.7 ft](https://tex.z-dn.net/?f=%20x%20%3D%208.7%20ft%20)
Step-by-step explanation:
Perimeter of the trapezoid-shaped window = sum of all the sides of the window frame
Thus, the equation to find the unknown side length, x, would be:
✔️![5.62 + 3.65 + 5.62 + x = 23.59](https://tex.z-dn.net/?f=%205.62%20%2B%203.65%20%2B%205.62%20%2B%20x%20%3D%2023.59%20)
Solve for x
![14.89 + x = 23.59](https://tex.z-dn.net/?f=%2014.89%20%2B%20x%20%3D%2023.59%20)
Subtract 14.89 from each side
![14.89 + x - 14.89 = 23.59 - 14.89](https://tex.z-dn.net/?f=%2014.89%20%2B%20x%20-%2014.89%20%3D%2023.59%20-%2014.89%20)
✔️![x = 8.7 ft](https://tex.z-dn.net/?f=%20x%20%3D%208.7%20ft%20)
Slope intercept: y = mx + b
3y = 2x + 10
Y = 2/3x + 10/3
Perpendicular = opposite sign and reciprocal slope
Y = -3/2x + b
-10 = -3/2(10) + b
-10 = -15 + b, b = 5
Equation: y = -3/2x + 5
Answer:
Step-by-step explanation:
Answer:
20%
Step-by-step explanation:
6x5=30
20x5=100