Answer:
The north campus had 600 students (180 music majors)
The south campus had 400 students (280 music majors)
Step-by-step explanation:
x = number of students at the north campus before the merger
If the total of students for the two school is given as 1000, so:
(1000 - x) = number of students at the south campus before the merger.
The equation for music major is:
0,3x + 0,7(1000-x) = 0,46(1000)
0,3x + 700 - 0,7x = 460
0,3x - 0,7x = 460 - 700
- 0,4x = -240
x = -240/-0,4
x = 600 -----> total number of students at the north campus
600*(0,3) = 180 music majors at the north
100 - 600 = 400 ------> total number of students at the south campus
400*(0,7) = 280------>music majors at the south
Answer:
46.6
Step-by-step explanation:
Answer:
B
Step-by-step explanation:
Given a quadratic equation in standard form
ax² + bx + c = 0 ( a ≠ 0 )
Then the discriminant is
Δ = b² - 4ac
• If b² - 4ac > 0 then 2 real irrational roots
• If b² - 4ac > 0 and a perfect square then 2 real rational roots
• If b² - 4ac = 0 then 1 real double root
• If b² - 4ac < 0 then 2 complex roots
Given
x² + 3x - 7 = 0 ← in standard form
with a = 1, b = 3, c = - 7 , then
b² - 4ac
= 3² - (4 × 1 × - 7) = 9 + 28 = 37
Since b² - 4ac > 0 then 2 real irrational roots
Answer:
???
Step-by-step explanation:
This is VERY confusing. Seems like it's already answered there.
1. 37.0952380952 or if rounded 38
2. 49.05 or if rounded 49.1 or 49
3. 2.84375 or if rounded 2.8 or 3