Solution:
3x - 5 = -2x²
2x² + 3x - 5 = 0
By splitting the middle term,
2x² - 2x + 5x - 5 = 0
2x (x - 1) + 5 (x - 1) = 0
(2x + 5)(x - 1) = 0
So, 2x + 5 = 0
x = -5/2
(OR)
x - 1 = 0
x = 1
The roots of 2x² + 3x - 5 = 0 are: A. x = 1 & B. x = -5/2
Ellie baseball will be $14.04 because it’s a 8% tax the difference is cheaper than Jason.
150 parents said yes, 30 said no.
30 adults said yes, 40 said no.
Y = - 2x and y = x² - 8, this means that:
-2x = x² - 8 → x² + 2x - 8 = 0
Solve this quadratic equation:
x₁ = [-b + √(b² - 4.a.c)]/2a and x₂ = [-b - √(b² - 4.a.c)]/2a
x₁ = [- 2 + √(4+32)]/2 and x₂ = [- 2 - √(4+32)]/2
x₁ = -4 and x₂ = 2 (in the 2nd equation). Now plug in these values in the 1st equation and you will find - 4 and 8
Answer D
Answer:
Total Surface Area of the given regular pyramid = 153 units²
Step-by-step explanation:
Base length of the regular pyramid, l = 9 units
Base width of the regular pyramid, w = 9 units
Height of the regular pyramid, h = 7 units
Perimeter of base = 3 × 9
= 27 units
Hence, Total Surface Area of the given regular pyramid = 153 units²