Let’s go backwards
-25-9= -34
So x= -34
Let’s test this out:
-34 +9= -25
Hope this helped
Answer:
(2, -4).
Step-by-step explanation:
x^2 - 4x
= (x - 2)^2 - 4.
So the vertex is at
(2, -4).
Answer:
(3, 10 ) and (7, 30 )
Step-by-step explanation:
Given the 2 equations
5x - y = 5 → (1)
2y - x² = 11 → (2)
Rearrange (1) expressing y in terms of x
y = 5x - 5 → (3)
Substitute y = 5x - 5 into (2)
2(5x - 5) - x² = 11
10x - 10 - x² = 11 ← rearrange into standard form
x² - 10x + 21 = 0 ← in standard form
(x - 3)(x - 7) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 3 = 0 ⇒ x = 3
x - 7 = 0 ⇒ x = 7
Substitute these values into (3) for corresponding values of y
x = 3 → y = 5(3) - 5 = 15 - 5 = 10 ⇒ (3, 10 )
x = 7 → y = 5(7) - 5 = 35 - 5 = 30 ⇒ (7, 30 )
I believe it is:
(−16/9, 1/9)
Solve for the first variable in one of the equations, then substitute the result into the other equation.
Answer:
1: 62 degrees
2: 23 degrees
3: 157 degrees
4: 23 degrees
5: 62 degrees
Step-by-step explanation:
SAS and SSS! i dont really know how to explain it other than all the angles match up in some way. hope this helps!