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Sedaia [141]
3 years ago
8

A classroom has 12 students with brown hair, 8 students with black hair, and 5 students with blonde hair. If three students are

chosen at random, what is the probability that they all have black hair?
a. 1/160

b. 3/575

c.14/575

d. 336/15625
Mathematics
1 answer:
aksik [14]3 years ago
4 0
I am going to have to go with, C, because the other answers are Invalid.
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11b-7-3n+8-5b+9n what is the answer
Sergio [31]

Answer:

6 n + 6 b + 1

Step-by-step explanation:

Simplify the following:

11 b - 7 - 3 n + 8 - 5 b + 9 n

Grouping like terms, 11 b - 7 - 3 n + 8 - 5 b + 9 n = (9 n - 3 n) + (11 b - 5 b) + (8 - 7):

(9 n - 3 n) + (11 b - 5 b) + (8 - 7)

9 n - 3 n = 6 n:

6 n + (11 b - 5 b) + (8 - 7)

11 b - 5 b = 6 b:

6 n + 6 b + (8 - 7)

8 - 7 = 1:

Answer: 6 n + 6 b + 1

4 0
3 years ago
what is the solution to set to the inequality (4x-3)(2x-1)_>0 a) {x|x<_3 or x_>1} b) {x|x<_2 or x_> 4/3} c) {x|x&
Vinil7 [7]
       (4x - 3)(2x - 1) ≥ 0
4x - 3 ≥ 0    or    2x - 1 ≤ 0
    + 3  + 3                + 1 + 1
     4x ≥ 3                 2x ≤ 1
      4     4                  2    2
       x ≥ ³/₄                  x ≤ ¹/₂
        x ∈ [-∞, ¹/₂] ∧ [³/₄, ∞]

The answer is C.
6 0
2 years ago
Read 2 more answers
If the point (x, sqrt3/2) is on the unit circle, what is x?
MAVERICK [17]

Answer:

the correct answer is b) 1/2 which is an special angle 60° (pi/3)

4 0
2 years ago
What is the value of the discriminant for the quadratic equation 0 = 2x2 + x – 3?
mrs_skeptik [129]
Answer is C. Just plug in the values of 2 , 1 and -3 as a, b, and c accordingly.
6 0
3 years ago
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find the area of the larger rectangle by finding the area of the two small rectangles and adding them.
cluponka [151]
The answer is 21
 the area of the small rectangle is 6 and the area of the bigger one is 15 
15+6=21
8 0
3 years ago
Read 2 more answers
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