Answer:
C
Step-by-step explanation:
Equation : -1x² - 14x + 2 = 0General Formula : b2-4ac=0a=-1, b= -14, c= 2Put the Value in General FormD = (-14)2 - 4 x -1 x 2D = 196--8D = 204
and the polynomial has 2 real roots
Answer:
The range is 2
Step-by-step explanation:
The median is 5. The mode is 5. The mean is 5.
Answer:
y²+4y
Step-by-step explanation:
y multiplies with (y+4)
y times y is y²
y times 4 is 4y
That leaves you with y²+4y
Answer:
4 Cubes
Step-by-step explanation:
A box 4 cm by 6 cm by 8 cm is painted on all six faces.
The volume of the box = L × B × W
V = 4 × 6 × 8 = 192 cm³
The box cut into cubes with the 2 cm sides.
Volume of the 2 cm cube = 2 × 2 × 2 = 8 cm³
The number of cubes from the box = 
= 24 cubes
There would be 4 cubes in the middle would be painted only one side.
Periphery cubes of the box are painted on two or more sides.
The length of the garden is 4.3 m while the width is 4.3 m
Let x represent the length of the garden. Therefore:
The area of the garden = x × x = x²
The width of the walkaway is 1.8 m, hence the length of the garden and walkaway = x + 1.8. The width of the garden and walkaway = x + 1.8.
Hence the area of the garden and walkaway = (x + 1.8) × (x + 1.8) = x² + 3.6x + 3.24
The area of walkaway = (x² + 3.6x + 3.24) - x² = 3.6x + 3.24
Since the area of the walkway is equal to the area of the garden, hence:
3.6x + 3.24 = x²
x² -3.6x - 3.24 = 0
x= 4.34 m or -0.74 m
Since the length cannot be negative, hence x = 4.3 m
Therefore the garden is 4.3 m by 4.3 m
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