Answer:
I hate math too <3
Increasing: [0,1]
Decreasing: (infinity,0] U [1,infinity)
Step-by-step explanation:
functions are use in money machines, soda machines we use functions for Basic economics and a lot of things, for example, you can use functions whenever you buy a sale the first thing u calculate is the discount. For example, I want to buy this 20 dollar shirt, and it is on sale at 15% off.
Answer:
so it equation a= 0.2
Step-by-step explanation:
Answer:
All quadrilaterals are squares. All rectangles are quadrilaterals.
All quadrilaterals are parallelograms.
Step-by-step explanation:
Answer:
(- 2, 1 ) and (1, 4 )
Step-by-step explanation:
Given the 2 equations
y = - x² + 5 → (1)
- x + y = 3 → (2)
Rearrange (2) expressing y in terms of x by adding x to both sides
y = x + 3 → (3)
Substitute y = x + 3 into (1)
x + 3 = - x² + 5 ( subtract - x² + 5 from both sides )
x² + x - 2 = 0 ← in standard form
(x + 2)(x - 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 2 = 0 ⇒ x = - 2
x - 1 = 0 ⇒ x = 1
Substitute these values into (3) for corresponding values of y
x = - 2 : y = - 2 + 3 = 1 ⇒ (- 2, 1 )
x = 1 : y = 1 + 3 = 4 ⇒ (1, 4 )
