Mathematics High School

A short quiz was to be held at Meenakshi's school. As an unprepared student, she planned to randomly guess all the answers on the twelve true or false questions. What is the probability that at least 2 of Meenakshi's answers will be correct?

Answers

Answer 1

Answer:

0.9968

Step-by-step explanation:

Given that:

P of being correct = 0.5 (since there are only 2 options in each question with only one bring correct).

1 - p = 1 - 0.5 = 0.5

Number of questions, n = 12

Probability that atleast 2 questions are correct

P(x ≥ 2) = p(x = 2) + p(x = 3) +... + p(x = 12)

P(x =x) = nCx * p^x * (1 - p)^(n - x)

The sun of the individual probabilities gives us the answer or we could use the binomial probability calculator :

Hence,

P(x ≥ 2) = 0.9968

Related Questions

can someone answer my last question please- its due today

Answers

Answer:

you would solve D first.

I’ll give brainlist if u answer with evidence

Answers

Answer:

The answer is 17/36

Step-by-step explanation:

First you multiply 1/4 times 9/9 and you get 9/36. Then you multiply 2/9 times 4/4 and you would get 8/36 and 8/36 + 9/36=17/36.

Help me please. 7th grade work AAAAAAAAAAAAAAAAAAAAAAAAA

Answers

Answer:

a. [tex]-\frac{23}{20} , -1\frac{3}{20} , -1.15[/tex]

b. [tex]\frac{5}{24}[/tex]

c. [tex]-\frac{1}{2} , -.5[/tex]

d. [tex]\frac{19}{15} , 1\frac{4}{15}[/tex]

e. [tex]\frac{53}{56}[/tex]

f. [tex]-\frac{25}{18}[/tex]

Step-by-step explanation:

Find each difference.
(-652 + 125 - 8) – (352 + 85 - 6) =
-952 + 45 - 14
-952 + 4s - 2
-952 + 20s - 14
-952 + 20s - 2



Answers

Step-by-step explanation:

-6s2+12s-8-3s2-8s+6

=-9s2+4s-2

Answer:

second part is

2a^2 + 9ab + (-7b^2)

on edge

Step-by-step explanation:

Simplify the expression. Write your answer as a power.
(-2.9) x (-2.9)^7

(The seven is the exponent btw)

Answers

Answer:

5002.46412961

Step-by-step explanation:

-3 |x-3|+3=6
Please hell!

Answers

Hai! So your answer for this would be no solution

PLS HELP I HAVE TO TURN THIS IN IN FIVE MIIN!!
Tickets to a play cost $4 in advance and $5 at the door. The theater club president wants to raise at least $400 from the ticket sales. If the club sells 40 tickets in advance, what is the least number of tickets the club needs to sell at the door to reach the president’s goal?

Answers

Answer:48

Step-by-step explanation:

Answer:

48 tickets

Step-by-step explanation:

so multiply the 4 and 40 to get 160, then subtract that from 400. divide by the 5 and then u get 48

PLEASE HELP WILL GIVE BRAINLIEST!!!

Answers

sas
step by step explanation :
it says a number in the side then a angle in the middle and then another number on the side

Answer:

sas

i don't think so

0œ ßægœ5 kœ

Can someone please help with 26

Answers

You answer is three because you have to divide

write 2x + y= 9 in the form of y=mx + b​

Answers

Step-by-step explanation:

2x+y=9 ( y=mx+b)

y=-2x+9

sorry...if its wrong

Write the equation of a line with points (2, - 4) and (4, 2) in slope-intercept form

Answers

Answer:

y+4=3(x-2)

..

.

.

Please help!! BRAINLIEST to correct answer!!

Answers

Answer:

Let us use Pythagoras theorem Hence [tex] {4}^{2} + {b}^{2} = {10}^{2} [/tex][tex]16 + {b}^{2} = 100[/tex][tex] {b}^{2} = 84[/tex][tex]b = \sqrt{84} [/tex][tex]b = 9.16[/tex]So Option A

A (9-0) Im guessing Just common sense too me

Help me plz plz help plz!!!!

Answers

He received: (180 × 5/6) votes

= 150 votes

Answer:

150 votes

Step-by-step explanation:

We require to calculate

[tex]\frac{5}{6}[/tex] of 180 , that is

[tex]\frac{5}{6}[/tex] × 180 ( divide 180 by 6, then multiply answer by 5 ) , so

5 × 30

= 150

help me plz help p=helpppp

Answers

Answer:

??

Step-by-step explanation:

I need help with this ( please help me )

Answers

Answer:

<7=120

<8=60

Step-by-step explanation:

<2 and <7 are alternate exterior angles. <7 and <8 are complementary sor just do 180-120 and you will get 60

really need help asap


A pair of fire towers uses technology to search for forest fires. Let the center of the forest be the origin on a coordinate grid. The first fire tower is located 5 km east and 8 km south of the center, and the second fire tower is located 7 km west and 4 km north of the center. The technology at the first tower can locate fires within a radius of 10 km and the second tower within a radius of 9 km. The system of inequalities represents this scenario.


StartLayout Enlarged left-brace first row (x minus 5) squared + (y + 8) squared less-than-or-equal-to 100 second row (x + 7) squared + (y minus 4) squared less-than-or-equal-to 81 EndLayout


At which location, from the origin, would a fire be detected by both towers?


2 km east and 3 km south

3 km east and 2 km north

2 km west and 1 km north

1 km west and 2 km south

Answers

Answer:

the answer is D 1km west and 2km south

Step-by-step explanation:

Just took the test 100%

(SHOW STEPS)
2(x-5) + 10

Answers

Answer:

2(x-5)+10

2x-10+10

2x is the answer

Step-by-step explanation:

please help me thank you​

Answers

Answer:

the answer is A

Step-by-step explanation:

Answer:

       your answer would be 84 simplify 2

Step-by-step explanation:

Can someone help? Don’t need any working out

Answers

volume= 301.6
curved surface area= 188.5

Giving brainliest !!!!!!

Answers

The equation is basically saying

distance/3

Therefore, to replace the word "distance" you would use d

The answer is ( B. d  )

PLS HELP ME ON THIS ASAP!!!!​

Answers

Answer:

a = upward

vertex = -2,4

Step-by-step explanation:

i will answer the rest under comments

I JUST NEED THE EQUATION!!!!!!!!!!!!!

Answers

Answer:

The equation is 24 - y = 45

What kind of relationship is expressed below?
5x-9>12

Answers

Answer:

Today: Tuesday, 12th January 2021

21.16 PM

[tex] \tt 5x - 9 > 12[/tex]

[tex] \tt 5x > 12 + 9[/tex]

[tex] \tt 5x > 21[/tex]

[tex] {\orange{\boxed{ \red{\tt x = \frac{21}{5} }}}}[/tex]

The given relation 5x-9>12 represents inequality. the solution of inequality is x > ( 21 / 5).

What is inequality?

When two expressions are connected by a sign like "not equal to," "greater than," or "less than," it is said to be inequitable. The inequality shows the greater than and less than relation between variables and the numbers.


Given inequality, the relation is 5x-9>12. The solution to inequality be done as:-

5x - 9 > 12

5x > 12 + 9

5x > 21

x > 21 / 5

Therefore, the given relation 5x-9>12 represents inequality. the solution of inequality is x > ( 21 / 5).

To know more about inequality follow

https://brainly.com/question/24372553

#SPJ5

At a country music concert 48 people played guitars. That number is 6 times as many as the number of people who played banjos. How many people played banjos?

Answers

Answer:

8

Step-by-step explanation:

48 divided by 6 is 8

Answer:

8

Step-by-step explanation:

48/6=8

what is 28 divided by 5 5/6

Answers

The answer is 4.8 or 24/5 or 4 4/5


I need help pleasee

Answers

Answer:

c is the answer

explination:

4*3 1/2=28/2

28/2 divided by 6 is equal to 7/3 or 2 1/3

Mrs. Roy bought pizza for $18.50. She wanted to tip her delivery driver 15%. How much did she give the driver as a tip?

Answers

Answer:

2.775 or if you want to say in terms of money it would be $2.78

Step-by-step explanation:


Proportional?
Non-proportional?

Answers

Answer:

Non-proportional

Step-by-step explanation:

Cross-Multiply

What is the slope of the line?

Answers

Answer:

-1/2  

or -2/4

Step-by-step explanation:

they are the same

Put these in descending order 0.68,0.9,0.81 and 0.86

Answers

Answer:

0.9 , 0.86, 0.81, 0.68

Step-by-step explanation:

i don't know if this has an explanation, you should just order them

0.9, 0.86, 0.81, 0.68


you just order them normally.
don’t be fooled by the fact that 0.9 doesn’t have another number- it means 0.90
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