Answer:
x = -2 , y = 4
Step-by-step explanation:
given:
5x + 2y = -2 <em>*4</em>
4x + 3y = 4 <em>*5</em>
Solving simultaneously,
20x + 8y = -8 ....eq 1
(-) 20x +15y = 20 ...eq 2
.............................................
-7y = -28
y = -28 / -7
y = 4
using equation 2,
20x +15(4) = 20
20x = -40
x = -2
Answer:
the shaded area = 80
Step-by-step explanation:
area = x*y 12x12=144 144/9=16
16x5= 80
-6.5 + 2.1
-4.4
Answer: -4.4
The discriminant is a way of figuring out how many zeros a quadratic function has.
The function is graphed, so we can visually see how many zeros it has. There are two zeros in the function.
The discriminant will be less than 0 if there are two zeros.
The discriminant will equal 0 if there is one zero.
The discriminant will be greater than 0 if there are no zeros.
Since this function has two zeros, the discriminant will be negative.
4hrs, I think, because 20 divided by 5 is 4.