Answer:
Step-by-step explanation:
Given
No of People who can speak English is
No of People who can speak French is
No of People who can speak Spanish is
No of People who can speak both English and French
No of People who can speak both English and Spanish
No of People who can speak both French and Spanish
No of people who can speak all languages is
no of People who can Speak at least one Language is
Probability that Randomly selected can speak at least 1 of these languages
Hi there!
(32 + 60) ÷ 135 = x
92 ÷ 135 = x
0.6814814... = x → 814 is periodic, so it just keeps repeting itself.
There you go! I really hope this helped, if there's anything just let me know! :)
Answer:
2 real solutions
Step-by-step explanation:
Remember this messy thing?
The <em>quadratic formula</em>, as it's called, gives us the roots to any quadratic equation in standard form (ax² + bx + c = 0). The information on the <em>type</em> of roots is contained entirely in that bit under the square root symbol (b² - 4ac), called the <em>discriminant</em>. If it's non-negative, we'll have <em>real</em> roots, if it's negative, we'll have <em>complex roots</em>.
For our equation, we have a discrimant of (-3)² - 4(6)(-4) = 9 + 96 = 105, which is non-negative, so we'll have real solutions, and since quadratics are degree 2, we'll have exactly 2 real solutions.
I believe you are right with all of them.