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
Vika [28.1K]
3 years ago
14

A class consists of 55% boys and 45% girls. It is observed that 25% of the class are boys and scored an A on the test, and 35% o

f the class are
girls and scored an A on the test.
If a student is chosen at random and is found to be a girl, the probability that the student scored an Ais
Mathematics
1 answer:
Julli [10]3 years ago
7 0

Step-by-step explanation:

Probability of event A on the condition of event B is:

P(A|B) = P(A and B) / P(B)

P(scored an A | girl) = P(scored an A and girl) / P(girl)

P(scored an A | girl) = 0.35 / 0.45

P(scored an A | girl) = 0.778

The probability that a randomly selected girl also scored an A is 77.8%.

You might be interested in
Gracie can purchase 5 oranges for $4 but she only wants one what is the cost of one orange
vladimir2022 [97]
The cost of one orange is $1.25
what you do is you divide 5 by 4 so 5 divided by 4= 1.25
hope this helps!
8 0
3 years ago
Divide the following polynomial, then place the answer in the proper location on the grid.
beks73 [17]

6x² + 11x - 35 = (3x - 5)(2x + 7)  

=> (3x - 5)(2x + 7)/(3x - 5)  

i.e. 2x + 7...........as the 3x - 5 term cancels.  


6 0
3 years ago
Read 2 more answers
Point M is located at (4,6) on a coordinate grid. Point M is translated 8 units to thr left and 9 units down to create point M'.
nata0808 [166]
Well, i would use the distance formula to find the distance between the two points. Only issue- you do not have the other point, so lets find it!

We have the point 4,6. 4 is the x, and 6 is the y.

Lets start with 4 since the x works with the left and right aspect of the location. It says M has been translated 8 units to the left, meaning we go back 8. So if we are at 4, and we go back (A.K.A. Subtract) 8, we will be at -4.

Now lets move onto the y, which works with the up and down aspect of the location. It says M has been translated 9 unites down, meaning the point will be heading down and getting smaller. So if we are at 6, and we go down (A.K.A. subtract) 9, then we will be at -3.

So now we have the coordinates of point M (4,6) and point M' (-4,-3) so we can now complete the distance formula!

The distance formula helps determine the distance between two points. It looks like this: D = √(x₂-x₁)²+(y₂-y₁)²

Though it does not matter which order you use the coordinates in, i am choosing to use M and then M'.

So, starting with the X, X₂ will be -4 and X₁ will be 4.
Again, starting with the Y, Y₂ will be -3 and Y₁ will be 6.

So, the formula plugged in will look like this: d = √(-4 - 4)² + (-3 - 6)²

Solving it out, we first need to work within the parenthesis. Can you solve it?

Our outcome will be this: -8² + -9². But, since we are squaring (And a negative times a negative equals a positive) you can just write 8² + 9²

8²= 64
9²= 81

64+81 = 145.

So, the distance between point M and point M' would be 145 units

Hope this helps!

If it does not, please let me know so i can try to help!

4 0
3 years ago
In a 10x10 grid that represents 800 what does one square represent
Simora [160]
 the answer would be 80,because 800 divided 10 is 80.
5 0
3 years ago
If $3,000,000 is invested at 6% interest compounded continuously, how much
g100num [7]

Answer:

  $24,498,509.74

Step-by-step explanation:

The formula for the value as a function of time is ...

  V(t) = P·e^(rt)

Filling in the numbers and doing the arithmetic, we have ...

  V(35) = 3,000,000·e^(0.06·35) ≈ 24,498,509.74

Compounded continuously for 35 years, the investment will be worth $24,498,509.74.

3 0
4 years ago
Other questions:
  • A rectangular prism has a length of 11 centimeters, a width of 9 centimeters, and a height of 3 centimeters. What is the cubic c
    13·2 answers
  • A first number plus twice a second number is 1. Twice the first number plus the second totals 14. Find the numbers
    5·2 answers
  • at the concessions stand medium sodas $1.25 and hot dogs cost 2.50 Natalie group brought in pizza but is buying the drinks at th
    14·2 answers
  • Of 30 students 1/3 play sports 2/5 of them play soccer how many play soccer
    5·2 answers
  • Determine whether each number could be the probability of an event. Explain your reasoning.
    5·1 answer
  • What is 119.63 rounded to the nearest whole number ?
    10·2 answers
  • Does this really works
    5·1 answer
  • Which sign makes this number sentence true? |-18.25| __ |10.75|
    8·2 answers
  • Can someone help me on this please
    15·2 answers
  • What is the value of x? ​
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!