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
Kisachek [45]
3 years ago
11

A math class has 5 girls and 5 boys in the seventh grade and 5 girls and 7 boys in the eighth grade. The teacher randomly select

s a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she selects are both girls? Write your answer as a fraction in simplest form.
Mathematics
1 answer:
Fudgin [204]3 years ago
5 0

Answer:

\dfrac{5}{24}

Step-by-step explanation:

A math class has 5 girls and 5 boys in the seventh grade, 10 students in total. The probability of choosing one girl from this class is

\dfrac{5}{10}=\dfrac{1}{2}

A math class has 5 girls and 7 boys in the eighth grade, 12 students in total. The probability of choosing one girl from this class is

\dfrac{5}{12}

The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. The probability that the students she selects are both girls is

\dfrac{1}{2}\cdot \dfrac{5}{12}=\dfrac{5}{24}

You might be interested in
Can some tell me what do do for this, how to solve it, and the answer?
kotykmax [81]

1 2 3 4 5

2 4 6 8 10

8 10 12 14 16

4 5 6 7 8

3 3 3 3 3

How I did it is i took the numbers 1 to 5 and i doubled them, added 6, divided by 2 and subtracted the starting number.

5 0
3 years ago
25−2(5+4x)
ExtremeBDS [4]

Step-by-step explanation:

25 - 2(5 + 4x)

= 25 - 10 - 8x (Distributive Property)

= 15 - 8x.

3 0
3 years ago
Which equation is equivalent to logx 36 = 2?​
Margaret [11]

Answer:

The answer would be 36^2=x

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Select the expression equivalent to (4.8x−7)+(−3.8+1.2x)
love history [14]

Answer:

The answer is 6x−10.8 simplified

Step-by-step explanation:

4 0
2 years ago
The day length in Manila, Philippines, varies over time in a periodic way that can be modeled by a trigonometric function.
iris [78.8K]

Answer:

  • L(t) = 727.775 -51.875cos(2π(t +11)/365)
  • 705.93 minutes

Step-by-step explanation:

a) The midline of the function is the average of the peak values:

  (675.85 +779.60)/2 = 727.725 . . . minutes

The amplitude of the function is half the difference of the peak values:

  (779.60 -675.85)/2 = 51.875 . . . minutes

Since the minimum of the function is closest to the origin, we choose to use the negative cosine function as the parent function.

Where t is the number of days from 1 January, we want to shift the graph 11 units to the left, so we will use (t+11) in our function definition.

Since the period is 365 days, we will use (2π/365) as the scale factor for the argument of the cosine function.

Our formula is ...

  L(t) = 727.775 -51.875cos(2π(t +11)/365)

__

b) L(55) ≈ 705.93 minutes

8 0
3 years ago
Other questions:
  • What is 28% of 70? Also, 0.9% of 54? Thank you in advance!
    15·1 answer
  • Write an equation equal to -(16-9)
    14·1 answer
  • If total Revenue is $3000, Cost of Goods is $1500, and total Selling Expense is $500; what is the Profit for the business?*
    9·2 answers
  • What would the variable table be?
    14·2 answers
  • Talia bought a home for her pet turtle the rectangular tank is 3 feet long. 1 foot wide and 2 feet high. What is the volume?
    11·2 answers
  • Pls Answer the first one and the second question
    5·2 answers
  • Find the volume of the shape :)​
    14·1 answer
  • Which graph best represents the solution to the system of equations shown below? y = -2x + 14 y = 2x + 2 A coordinate grid is sh
    5·1 answer
  • Nm dont do the question I posted earlier I had done was just bored​
    6·2 answers
  • Can someone tell me what this is <br><br><br> 6% OF 56% X 60% X 40%
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!