A football field is 120 yards long (100 yards playing field plus 2 end zones 10 yards each) by 53 1/3 yards wide.
1 yard = 3 feet.
120 yards x 3 feet per yard = 360 feet
53 1/3 yards x 3 = 160 feet.
The area of the football fields is 360 x 160 = 57,600 square feet.
1 bag covers 2000 square feet:
57,600 / 2,000 = 28.8 bags, round up to 29 bags are needed.
1 bag cost $27.79.
29 bags x $27.79 = $805.91 total cost.
For the first term of 9x2, we know 3*3 is 9 and x*x is x2. For the middle term, we need two numbers that add to zero and cancel out the middle term, but that multiply to -16.
9x2 - 0x - 16
since the middle is 0, it is cancelled
9x2 - 16
(3x - 4)(3x + 4)
CHECK:
9x2 + 12x - 12x - 16
adding +12 and -12 cancels out
9x2 - 16
ANSWER: (3x - 4)(3x + 4)
Hope this helps! :)
Answer:
Equation -3x² - x + 3 = -3x² can not be solved using quadratic formula.
Step-by-step explanation:
1. -3x² - x + 3 = -3x²
Simplify above equation,
-3x² + 3x² - x + 3 = 0
or -x + 3 = 0 , Sine x² terms cancelled each other.
Hence this equation can not be solved using quadratic formula.
2. 0 =x² , yes here we can use quadratic formula
3. 0 = 2x²-1
Simplifying the above equation,
0 = 2x² - 1
1 = 2x²
x² =
Hence we can use quadratic formula here.
4. x²+3x-2 = 4x²- 5x - 1
Simplifying given equation,
x²+3x-2 = 4x²- 5x - 1
or x² - 4x² +3x +5x -2 + 1 = 0
or -3x² + 8x - 1 = 0
since x² term is here, hence we can solve this using quadratic formula.
A,D,E that’s the awnser I came up with