Answer:
(- 2, 15 ) and (2, 7 )
Step-by-step explanation:
Given the 2 equations
y = 3x² - 2x - 1 → (1)
2x + y = 11 → (2) ← subtract 2x from both sides
y = 11 - 2x → (3)
Substitute y = 3x² - 2x - 1 into (3)
3x² - 2x - 1 = 11 - 2x ( subtract 11 - 2x from both sides )
3x² - 12 = 0 ( add 12 to both sides )
3x² = 12 ( divide both sides by 3 )
x² = 4 ( take the square root of both sides )
x = ±
= ± 2
Substitute these values into (3) for corresponding values of y
x = - 2 : y = 11 - 2(- 2) = 11 + 4 = 15 ⇒ (- 2, 15 )
x = 2 : y = 11 - 2(2) = 11 - 4 = 7 ⇒ (2, 7 )
Answer:
8× (8 times)
Explanation:
For this question, divide.
72 ÷ 9 = 8.
Your answer will be 8.
Students awarded bachelor's degree is 1,601 thousands or 1,601,000 (marginal total of bachelor)
X + 5 + 4 + x + 5 = 60
2x + 14 = 60
-14 -14
2x = 46
x = 23
So, Josh's age is 23 + 4 which is 27 years old.