The question is an illustration of angles on a straight line
The value of x is 25.4
<h3>How to determine the value of x</h3>In the figure, angles 1 and 2 are angles on a straight line
Where:
So, we have:
Collect like terms
Divide through by 7
Hence, the value of x is 25.4
Read more about angles at:
Answer:
(- 4, 16 ) , (,
)
Step-by-step explanation:
y = x² → (1)
7x + 2y = 4 → (2)
substitute y = x² into (2)
7x + 2x² = 4 ( subtract 4 from both sides )
2x² + 7x - 4 = 0 ← in standard form
(x + 4)(2x - 1) = 0 ← in factored form
equate each factor to zero and solve for x
x + 4 = 0 ⇒ x = - 4
2x - 1 = 0 ⇒ 2x = 1 ⇒ x =
substitute these values into (1) for corresponding values of y
x = - 4 : y = (- 4)² = 16 ⇒ (- 4, 16 )
x = : y = (
)² =
⇒ (
,
)