Answer:
x = -2 or x = 1/3 thus: B & C
Step-by-step explanation:
Solve for x over the real numbers:
2 x^2 + 7 x - 2 = 2 x - x^2
Subtract 2 x - x^2 from both sides:
3 x^2 + 5 x - 2 = 0
The left hand side factors into a product with two terms:
(x + 2) (3 x - 1) = 0
Split into two equations:
x + 2 = 0 or 3 x - 1 = 0
Subtract 2 from both sides:
x = -2 or 3 x - 1 = 0
Add 1 to both sides:
x = -2 or 3 x = 1
Divide both sides by 3:
Answer: x = -2 or x = 1/3
Answer:
$25.90
Step-by-step explanation:
39.99 - 40% = 23.99
23.99 TIMES 8% = $1.91
23.99 + 1.91= $25.90
Answer:
10. 30km
11. 288km
12. 99km
Step-by-step explanation:
If 1cm=12km, just take the amount of cm and multiply by 12km.
For example, 2.5x12=30, and 24x12=288.
I hope this helps :)
A rational number is any number that can be written <em>as a ratio of two integers</em>.
0.62 fits the bill, as it can be written as the ratio 62/100 (or simplified to the ratio 31/50)
