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
velikii [3]
3 years ago
9

A brother and a sister are in the same math class. there are 8 boys and 10 girls in the class. one boy and one girl are randomly

chosen. what is the probability that the brother and sister are chosen? write your answer as a fraction in simplest form.
Mathematics
2 answers:
rusak2 [61]3 years ago
8 0
<h3><u>Answer:  </u></h3>

Hence, the probability is:

1/80

<h3><u>Step-by-step explanation:</u></h3>

A brother and a sister are in the same math class.

There are 8 boys and 10 girls in the class.

one boy and one girl are randomly chosen.

Let A be the event of choosing a sister.

and B denote the event of choosing a brother.

We have to find:

P(A∩B)

where P is the probability off an event.

As the event of choosing a brother and a sister is independent.

Hence,

P(A∩B)=P(A)×P(B).

Also P(A)=1/10

( Since out of 10 girls one girl is to be chosen).

and P(B)=1/8.

(Since out of 8 boys one boy is to be selected)

Hence,

P(A∩B)=1/8×1/10=1/80

Hence, the probability is:

1/80

timama [110]3 years ago
5 0
The best one is 1/9 maybe

You might be interested in
Click on the solution set graphic until the correct one is displayed.
PtichkaEL [24]

this pic is of empty set I guess bro

3 0
2 years ago
A baseball player has made 32 free throws in 45 attempts for current success rate of 71%. How many consecutive free throws must
s344n2d4d5 [400]

Answer: The player need to make 2 consecutive free throws to raise the average to 75%.

Step-by-step explanation:

Let the number of extra consecutive free throws to raise the average to 75% be 'x'.

Number of free throws already taken = 32

Number of attempts = 45

According to question, it becomes,

\dfrac{32+x}{45}=0.75\\32+x=45\times 0.75\\\\32+x=33.75\\\\x=33.75-32\\\\x=1.75

Hence, the player need to make 2 consecutive free throws to raise the average to 75%.

6 0
3 years ago
Please help me get this right I don’t know how to do it.
velikii [3]

Answer:

tan∠E=1/3

Step-by-step explanation:

Tangent or opposite/adjacent of angle E is segment HF/3 to solve for HF you can use sine of H opposite over hypotenuse or √8/HF=sin45°. Rearranging the equation you get √8/sin45°=HF and sin45°= 2√2 so √8/2√2=1 HF=1 now you know that tan(∠E)=1/3.

7 0
2 years ago
(3.8 x 10 ^ -6) x (2.37 x 10 ^ -3)<br><br> Enter the answer in science notification
Black_prince [1.1K]

Multiply the coefficients and the powers of 10 with each other:

(3.8 \times 10^{-6}) \times (2.37 \times 10^{-3}) = (3.8\times2.37) \times (10^{-6} \times10^{-3})

The numeric part simply yields

3.8\times2.37 = 9.006

As for the powers of 10, you have to add the exponents, using the rule

a^b \times a^c = a^{b+c}

So, we have

10^{-6} \times10^{-3} = 10^{-6-3} = 10^{-9}

So, the final answer is

9.006\times 10^{-9}

7 0
2 years ago
Can someone show me how you get it and the answer
pochemuha

Answer: b=8 m=2

Step-by-step explanation: when x is 0 y=8 so that gives you the y-intercept. When you subtract 8-6 its 2 which is over 2 which is 2

8 0
3 years ago
Read 2 more answers
Other questions:
  • Oil change the shape of the distribution of the time required to get an oil change at a 10-minute oil-change facility is unknown
    9·1 answer
  • How I solve x*x <br> Please help <br> 1) 2x<br> 2) x^2<br> 3) x(x+2)<br> 4) x+2
    8·1 answer
  • How much interest would be earned on $3,700 in one year if it is invested at 4%?
    8·1 answer
  • Chris rode his bike along the same route every day for 60 days he loves it he had gone exactly 127.8 miles
    5·1 answer
  • What is the answer to 4 and 5?
    11·1 answer
  • Is this right? pls help asapppp
    8·2 answers
  • 58:36
    8·1 answer
  • Factor the expression (20a+4)-(14a-12)
    8·1 answer
  • The value of y varies directly with x, and y = 18 when x = 12. Find y when x = 60.
    14·1 answer
  • The graph represents a pair of equations. What point represents the solution to the pair of equations?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!