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
alekssr [168]
3 years ago
8

It was 9/20 ..

Mathematics
1 answer:
Elza [17]3 years ago
6 0

Answer:

\frac{9}{20}

Step-by-step explanation:

We want probability that 1st is girl AND 2nd is girl as well.

In probability "AND" means multiplication and "OR" means "addition".

<u><em>We find the probabilities separately and multiply them together, since "AND".</em></u>

<u><em /></u>

  • P(girl from 7th grader) = number of girl 7th grader/total number of 7th grader

=9/10

  • P(girl from 8th grade) = number of girl in 8th grade/total number of 8th grader

=2/4

P(both girls) = 9/10 * 2/4 =9/20

You might be interested in
What is the slope of the line that passes through the points (1, -6)(1,−6) and (-8, 9) ?(−8,9)?
Monica [59]

Answer:

The answer to your question is  m = -5/3      

Step-by-step explanation:

Data

Point 1 = (1, -6)

Point 2 = (-8, 9)

Process

To find the slope just substitute the values in the formula and simplify.

Formula

slope = m = (y2 - y1) / (x2 - x1)

-Identify x1, y1, x2 and y2

  x1 = 1    y1 = -6   x2 = -8  y2 = 9

-Substitution

             m = (9 + 6) / (-8 - 1)

-Simplification

             m = 15/-9

-Result

             m = -5/3            

4 0
3 years ago
Maria rents a bicycle while on vacation. It costs a flat fee of $19.95 plus $5.50 an hour. Maria rents it for 4 hours. What is t
kolezko [41]

Answer:

36.45

Step-by-step explanation:

5.50 × 3 = 16.5

16.5 + 19.95 = 36.45

sorry if wrong.

hope it helps.

7 0
3 years ago
A car enthusiast is interested in studying the relationship between the asking price of used cars and their age. Which is more n
AlexFokin [52]

Answer:

B.Car's price

3 0
3 years ago
A rock climber ascends 18 3/4 feet to the top of a rock ledge. He descends 8 1/8 feet and takes a break on a rock outcrop. Write
aalyn [17]

Answer:

3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is the measure of angle b°?​
Tasya [4]

Answer:

b = 110°

Step-by-step explanation:

The sum of angles in a trapezoid is 360°

Summing the angles we get:

65°+55°+130°=250°

Then subtracting this value from 360° we get:

360°-250°=110°

Final answer of 110°

7 0
2 years ago
Read 2 more answers
Other questions:
  • SOMEONE PLEASE HELP. SHOW WORK
    9·1 answer
  • you have 4500 cubic centimeters of wax. how many cylindrical candles can you make from the wax if each candle is 15 cm tall and
    12·1 answer
  • What is the possibility of not rolling a 5 on a standard cube
    11·1 answer
  • A kite is flying directly over a straight path 100m long.The angle of elevation of the kit from one end of the path is 35 °.from
    6·1 answer
  • 24 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    5·1 answer
  • Which number has 45 as a multiple?<br><br> 4<br> 7<br> 9<br> 10
    13·2 answers
  • The diameter of a circle is 14 m. Find its area to the nearest tenth.
    7·1 answer
  • Elena is conducting an experiment to determine if the high school students are more relaxed when the lights are off or when musi
    5·1 answer
  • Solve the linear equation for y.<br> -6y (-) 6 =-14
    8·1 answer
  • Is -10/3 greater or less that the square root of -9
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!