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saveliy_v [14]
3 years ago
13

A bag contains 44 red balls and 55 blue balls. 22 balls are selected at random. find the probability of selecting 22 red balls.

Mathematics
1 answer:
scoundrel [369]3 years ago
5 0
<span># of ways to select 2 red balls: 5C2 = 10
# of random pairs of balls: 12C2 = 66</span>
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3+5i/-2+3i perform operation
melisa1 [442]

Answer:

\dfrac{9}{13}-\dfrac{19}{13}i

Step-by-step explanation:

Remember i^2=-1

You are given the fraction \dfrac{3+5i}{-2+3i}

First, multiply the numerator and the denominator by -2-3i:

\dfrac{3+5i}{-2+3i}=\dfrac{(3+5i)(-2-3i)}{(-2+3i)(-2-3i)}=\dfrac{(3+5i)(-2-3i)}{(-2)^2-(3i)^2}=\dfrac{(3+5i)(-2-3i)}{4-9i^2}=\dfrac{(3+5i)(-2-3i)}{4+9}

This gives you 13 in denominator, now multiply two complex numbers in numerator:

(3+5i)(-2-3i)=-6-9i-10i-15i^2=-6-19i+15=9-19i

Thus, the initial fraction is

\dfrac{9-19i}{13}=\dfrac{9}{13}-\dfrac{19}{13}i

4 0
2 years ago
Help me pls and dont guess
BARSIC [14]

Answer:

C

Step-by-step explanation:

3 1/2 times -(4/5)

First multiply 3 1/2 and -(4/5)=2 4/5

6 0
3 years ago
Read 2 more answers
Three out of four students in a school said they would vote for nuncio for class president. Predict how many of the 340 students
Papessa [141]
3/4 = x / 340....3 to 4 students = x to 340 students
cross multiply
(4)(x) = (3)(340)
4x = 1020
x = 1020/4
x = 255 <==

or this way.....

3 out of 4 students.....3/4 = 75%
so 75% of 340 = 0.75(340) = 255 <=
4 0
3 years ago
Determine whether the relation below is also a function.
Bess [88]

Answer:

B. Not a function

Step-by-step explanation:

3 0
2 years ago
Select all that apply.
lidiya [134]

Answer:

parallelogram, quadrilateral

Step-by-step explanation:

a rectangle is a quadrilateral because it has 4 sides.

it is a a parallelogram because it has two sets of parallel lines in those four sides.

in order for a quadrilateral to be a rhombus, all sides must be the same length. (if a rectangle is a rhombus, it is a square.)

5 0
3 years ago
Read 2 more answers
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