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Nata [24]
2 years ago
15

In a second grade class containing 13 girls and 9 boys, 2 students are selected at random to give out the math papers. What is t

he probability that the second student chosen is a boy, given that the first one was a girl?
Mathematics
2 answers:
Finger [1]2 years ago
8 0
13/22 x 9/21 = 0.25                                               
Rashid [163]2 years ago
4 0

Answer:

42.86% probability that the second student chosen is a boy, given that the first one was a girl.

Step-by-step explanation:

Initially, there are 22 students, of which 13 are girls and 9 are boys.

The first student chosen was a girl, so now there are 21 students, of which 12 are girls and 9 are boys.

What is the probability that the second student chosen is a boy, given that the first one was a girl?

There are 21 students, of which 9 are boys. So there is a 3/7 = 0.4286 = 42.86% probability that the second student chosen is a boy, given that the first one was a girl.

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After doing some work in the house, Bob and Carol want to put a concrete patio on the side of the house to keep people from trac
Irina-Kira [14]

Answer:

Volume= 2.92cubic yard

Step-by-step explanation:

Converting to ft

23ft9inches= 23+(9/12)=23.75ft

10ft 1 in= 10 +(1/12)= 10.083ft

4 inches= (4/12)=0.333ft

Volume= L×W×H

Volume= 23.75 × 10.083×0.33= 79.02ft^3

Converting to cubic yard

1 cubic foot= 0.037 cubic yard

79.02 cubic feet= 0.037× 79.02= 2.92cubic yard

4 0
2 years ago
Which of the following statements is always true? a. Workers being paid on commission make less money than if they are salaried.
cricket20 [7]

Answer:

Step-by-step explanation:

The only answer that makes any sense is B. A commission works on the premise that the more you sell, the more money you take home.

Suppose a car salesman working at a GM dealership is working on a salary of 10% of the selling price. (A bit high).

Suppose on one month he sells 10 trucks, each one selling for 40000 dollars.

1 truck brings in 40000*10/100 = 4000 for the salesman.

10 trucks bring in 10*4000 = 40000 dollars.

The next month he only sells 8 Trucks. His commission is

40000 *  10/100 = 4000 per truck

8 trucks * 4000 = 32000 total for that month. A little less but it's quite a bit for a month's work all the same.

6 0
2 years ago
4. Heather is putting together a square bulletin board for her new room, and the area of the
tester [92]

Answer:

69cm on all 4 sides

Step-by-step explanation:

196/4= 69

4 0
2 years ago
Read 2 more answers
How many distinct pairs of disjoint non-empty subsets of A are there, the union of which is all of A?
Mrac [35]
A = {1, 2, 5, 6, 8}
{1} U {2, 5, 6, 8} 
{2} U {1, 5, 6, 8} 
{5} U {1, 2, 6, 8} 
{6} U {1, 2, 5, 8} 
{8} U {1, 2, 5, 6} 
{1, 2} U {5, 6, 8} 
{1, 5} U {2, 6, 8} 
{1, 6} U {2, 5, 8}
{1, 8} U {2, 5, 6} 
{1, 2, 5} U {6, 8} 
{1, 2, 6} U {5, 8}
{1, 2, 8} U {5, 6}
{1, 5, 6} U {2, 8}
{1, 5, 8} U {2, 6}
{1, 6, 8} U {2, 5} 
The answer is 15 distinct pairs of disjoint non-empty subsets.
5 0
2 years ago
Which expression correctly represents “nine less than the quotient of a number and four, increased by three
Natasha2012 [34]

The required expression is \frac{x}{4}-9+3

Step-by-step explanation:

We need to identify the expression correctly represents “nine less than the quotient of a number and four, increased by three"

Solving:

Let the number is x

The quotient of number and four: \frac{x}{4}

nine less than the quotient of a number and four: \frac{x}{4}-9

Increased by 3 : \frac{x}{4}-9+3

So, nine less than the quotient of a number and four, increased by three is:

\frac{x}{4}-9+3

So, The required expression is \frac{x}{4}-9+3

Keywords: Write algebraic expression from words:

Learn more about Write algebraic expression from words at:

  • brainly.com/question/1600376
  • brainly.com/question/1617787
  • brainly.com/question/9720317

#learnwithBrainly

3 0
2 years ago
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