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
yarga [219]
3 years ago
15

The ratio of boys to girls in a class is 2:3. If there are 18 girls in the class, what is the probability of a boy being in the

class, P(boy)? SHOW WORK to verify your choice.
Mathematics
1 answer:
lukranit [14]3 years ago
7 0

Answer:

0.4

Step-by-step explanation:

If the ratio of boys to girls in a class is 2:3, then

  • there are 2x boys;
  • there are 3x girls.

If there are 18 girls in the class, then

3x=18\\ \\x=6

Thus, there are

  • 2\cdot 6=12 boys;
  • 3\cdot 6=18 girls;
  • 12+18=30 students in total.

The probability of a boy being in the class is

P=\dfrac{12}{30}=\dfrac{2}{5}=0.4

You might be interested in
50 pts if you answer plz plz
Nikitich [7]

Answer:

Step-by-step explanation:

Table 1: Add 7 to each output too get the answer for each input. Example output 1 +7 =Output 8

Table 2: Multiply each input by 6 to get the answer for each output. Example input 4 x 6=output 24

Table 3: Add 10 to each input to get output. Example 10+10=20 output

8 0
3 years ago
Which equation represents a line perpendicular to the line shown on the graph​
Alecsey [184]

Answer:

y = 1/4x + (any number)

Step-by-step explanation:

m = -8/2 = -4, the equation shown is y = -4x + 8

perpendicular is  y = 1/4x + (any number), you didn't say where the line was perpendicular.

7 0
3 years ago
Read 2 more answers
List three different combinations of coins, each with a value of 30% of a dollar.​
monitta

Answer:

1. 3 dimes

2. 1 quarter and a nickel

3. 30 pennies

Step-by-step explanation:

i hope this is it and i hope this helped <3

4 0
3 years ago
Read 2 more answers
A list of numbers is shown; 1 2 3 4 5 6 7 8 9 10
ahrayia [7]

Answer:

5.5

Step-by-step explanation:

We have a list of 10 numbers (n = 10) ordered from lower to higher.

1 2 3 4 5 6 7 8 9 10

The median is the value separating the higher half from the lower half of a data sample. Since n is even, there is no middle value and the median is defined as the mean between the two middle values, in this case, 5 and 6. Then,

median = 5 + 6 / 2 = 5.5

5 0
3 years ago
Which distance measurement is the most precise?
IgorLugansk [536]

Answer:

C- 29.25

Step-by-step explanation:

This answer goes into the thousendths place, meaning this is the most accurate.

4 0
3 years ago
Other questions:
  • Solve a(3 x-2b)=c(2x-2) for x
    6·1 answer
  • In 2/5 hour, Matt can type 4/5 page.
    6·1 answer
  • -5-n/9=-8
    5·1 answer
  • What is -2 sqrt20 - sqrt125
    15·1 answer
  • The graph of the equation y=2x^2-2 is shown which equation will shift the graph up 3 units
    7·1 answer
  • 15. PLZ HELP For each part below, use the figure to fill in the blank. If necessary, you may learn what the markings on a figure
    15·2 answers
  • Help!!!!!!!'!!!!!!!!!!!!!!!!!!!!!!!!!!!
    6·1 answer
  • Square A is smaller than Square B. Square B is smaller than Square C.
    14·1 answer
  • ANYONE SMART AT MATH NEED HELP ON THIS
    10·1 answer
  • Brody earns $14 per hour for the first 40 hours worked in a week and $21 per hour for any hours over 40 that he worked. Brody ea
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!