Answer: x=1.5811389999999999 , or 1.59
Step-by-step explanation:
First, Subtract 20 from both sides.
12x2+20−20=50−20
12x2=30
Then, Divide both sides by 12:
12x^2/12 = 30/12
⇒ you get : x^2 = 5/2
After, Take square root.
x= ± √ 5/2
Finally you answer is going to be =1.5811389999999999 OR, 1.59
* Hopefully this helps:) Mark me the brainliest:)
<em>∞ 234483279c20∞</em>
Answer:
8.0
Step-by-step explanation:
Answer:
2.351 or 2.4
Step-by-step explanation:
The inequality that represents the number of right answers (r) and wrong answers (w) Olga can give to win the contest is: 
<u><em>Explanation</em></u>
Number of right answers is
and number of wrong answers is 
Olga earns 12 points for each right answer and loses 4 points for each wrong answer.
So, total points earned for
right answers
and total points lost for
wrong answers 
That means, <u>her score will be</u>:
points.
In order to win the quiz contest, Olga must score <u>more than 400 points</u>. So, the inequality will be.......
