1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Leona [35]
3 years ago
12

Two students from a group of eight boys and 12 girls are sent to represent the school in a parade if the students are chosen at

random what is the probability that both students are girls?
Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
3 0

If you choose one person from the group, you have a 12/20 chance of them being a girl. Now, if the first person is a girl, we have one less girl and one less person to choose from. So, the new probability for the second person is 11/19.

Then, we multiply the chances

12/20 * 11/19

3/5 * 11/19

33/95

You might be interested in
If the dimensions of a square pyramid are measured in yards, then the volume of the pyramid is measured in
Leona [35]
Yd * yd * yd = yd^3

The volume is measured in cubic yards.
8 0
3 years ago
Read 2 more answers
Why is the greatest common factor of 2 numbers sometimes 1
faltersainse [42]
The greatest common factor of two numbers, one of which is 1, will always be 1.
8 0
3 years ago
Read 2 more answers
Which of the following BEST summarizes how to use the multiplication property of equality to isolate the
borishaifa [10]

Answer:

A. divide only on the right side of the equation by 2.

Step-by-step explanation:

I took the test yesterday and I got it hope this helps.

7 0
2 years ago
Find the area of a parallelogram with sides of 6 and 12 and an angle of 60°.
Anna007 [38]

ANSWER

36√3 square units.

EXPLANATION

The area of a parallelogram is obtained by multiplying the base by the height.

We use the sine ratio to obtain the height.

\sin(60 \degree)  =  \frac{h}{6}

h = 6 \sin(60 \degree)

h = 3 \sqrt{3}

The area becomes:

12 \times 3 \sqrt{3}  = 36 \sqrt{3} {units}^{2}

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%28x%5E%7B2%7D%20%2Bx-3%29%3A%20%28x%5E%7B2%7D%20-4%29%5Cgeq%201" id="TexFormula1" title="(x^{
Jlenok [28]

Answer:

x>2

Step-by-step explanation:

When given the following inequality;

(x^2+x-3):(x^2-4)\geq1

Rewrite in a fractional form so that it is easier to work with. Remember, a ratio is another way of expressing a fraction where the first term is the numerator (value over the fraction) and the second is the denominator(value under the fraction);

\frac{x^2+x-3}{x^2-4}\geq1

Now bring all of the terms to one side so that the other side is just a zero, use the idea of inverse operations to achieve this:

\frac{x^2+x-3}{x^2-4}-1\geq0

Convert the (1) to have the like denominator as the other term on the left side. Keep in mind, any term over itself is equal to (1);

\frac{x^2+x-3}{x^2-4}-\frac{x^2-4}{x^2-4}\geq0

Perform the operation on the other side distribute the negative sign and combine like terms;

\frac{(x^2+x-3)-(x^2-4)}{x^2-4}\geq0\\\\\frac{x^2+x-3-x^2+4}{x^2-4}\geq0\\\\\frac{x+1}{x^2-4}\geq0

Factor the equation so that one can find the intervales where the inequality is true;

\frac{x+1}{(x-2)(x+2)}\geq0

Solve to find the intervales when the equation is true. These intervales are the spaces between the zeros. The zeros of the inequality can be found using the zero product property (which states that any number times zero equals zero), these zeros are as follows;

-1, 2, -2

Therefore the intervales are the following, remember, the denominator cannot be zero, therefore some zeros are not included in the domain

x\leq-2\\-2

Substitute a value in these intervales to find out if the inequality is positive or negative, if it is positive then the interval is a solution, if it is negative then it is not a solution. This is because the inequality is greater than or equal to zero;

x\leq-2   -> negative

-2   -> neagtive

-1\leq x   -> neagtive

x>2   -> positive

Therefore, the solution to the inequality is the following;

x>2

6 0
2 years ago
Other questions:
  • What is 3/5 simplified
    11·2 answers
  • Cabs use a valuable commodity—gas! Research average gas prices from 2005–
    10·1 answer
  • In the city election, the mayor received 0.79 of the votes. What percentage of the votes did the mayor receive ?
    11·2 answers
  • What is 125 x 64 in expanded form
    9·1 answer
  • Please Help Thanks You ;)
    12·1 answer
  • Zac spends 30% of his monthly income on rent. If he pays $810 for rent each month, what is his
    11·1 answer
  • A circular lawn has a row of bricks around the edge. The diameter of the lawn is about 40 feet.
    14·2 answers
  • Devide 840 in the ratio 3:4​
    10·1 answer
  • Can someone help me out my grade are bad
    8·1 answer
  • How can we use the distributive property to find an expression equivalent to 4(5−3x)? Place the steps in order.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!