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
madam [21]
2 years ago
7

When a fair coin is flipped, what is the chance of getting about 50% heads- specifically between 40% and 60% heads for n=10 flip

s?
Mathematics
1 answer:
aleksklad [387]2 years ago
3 0
At at least one die come up a 3?We can do this two ways:) The straightforward way is as follows. To get at least one 3, would be consistent with the following three mutually exclusive outcomes:the 1st die is a 3 and the 2nd is not: prob = (1/6)x(5/6)=5/36the 1st die is not a 3 and the 2nd is: prob = (5/6)x((1/6)=5/36both the 1st and 2nd come up 3: prob = (1/6)x(1/6)=1/36sum of the above three cases is prob for at least one 3, p = 11/36ii) A faster way is as follows: prob at least one 3 = 1 - (prob no 3's)The probability to get no 3's is (5/6)x(5/6) = 25/36.So the probability to get at least one 3 is, p = 1 - (25/36) = 11/362) What is the probability that a card drawn at random from an ordinary 52 deck of playing cards is a queen or a heart?There are 4 queens and 13 hearts, so the probability to draw a queen is4/52 and the probability to draw a heart is 13/52. But the probability to draw a queen or a heart is NOT the sum 4/52 + 13/52. This is because drawing a queen and drawing a heart are not mutually exclusive outcomes - the queen of hearts can meet both criteria! The number of cards which meet the criteria of being either a queen or a heart is only 16 - the 4 queens and the 12 remaining hearts which are not a queen. So the probability to draw a queen or a heart is 16/52 = 4/13.3) Five coins are tossed. What is the probability that the number of heads exceeds the number of tails?We can divide
You might be interested in
(5x to the power of 2 -6x+2)+9x to the power of 2 +10x-7)
xxTIMURxx [149]

Answer:

45x^{4} -4x^{3} -77x^{2} +62x-14

Step-by-step explanation:

Im assuming the question was (5x^{2} -6x+2)(9x^{2} +10x-7) if thats not the case then im wrong

6 0
2 years ago
1. Given f (x) = -2x + 1, find f(-1)
AleksandrR [38]

Answer:

3

Step-by-step explanation:

plug in (-1) for x

-2(-1) + 1

2 + 1

3

4 0
2 years ago
Read 2 more answers
Which two equations represent a nonlinear function?
irina [24]

Answer:  See below.

Step-by-step explanation:

The formatting is likely incorrect for these two options:

y=(x−1)2, and  

y = ( x − − 1 ) 2

I'll assume they were meant to be:

y=(x−1)^2, and  

y = ( x + 1 )^2

In this case they would be non-linear, since y depends on the value of x^{2}

Use a "^" sign to indicate raised to a power:  x^2 means x^{2}.  

y=(x−1)2 means y = 2x - 2

y=(x−1)^2 means y = (x-1)^{2}

8 0
2 years ago
The height of a trapezoid is 6 in. and it’s area is 72 in to the 2nd power. One base of the trapezoid is 6 inches longer than th
Vitek1552 [10]

Given:

The height of the given trapezoid = 6 in

The area of the trapezoid = 72 in²

Also given, one base of the trapezoid is 6 inches longer than the other base

To find the lengths of the bases.

Formula

The area of the trapezoid is

A=\frac{1}{2} (b_{1} +b_{2} )h

where, h be the height of the trapezoid

b_{1} be the shorter base

b_{2} be the longer base

As per the given problem,

b_{2}=b_{1}  +6

Now,

Putting, A=72, b_{2}=b_{1}+6 and h=6 we get,

\frac{1}{2} (b_{1} +b_{1}+6)(6) = 72

or, b_{1}+b_{1}+6 = \frac{(72)(2)}{6}

or, 2b_{1}+6 = 24

or, 2b_{1}=24-6

or, b_{1}= \frac{18}{2}

or, b_{1}=9

So,

The shorter base is 9 in and the other base is = (6+9) = 15 in

Hence,

One base is 9 inches for one of the bases and 15 inches for the other base.

5 0
3 years ago
Plz help ...............................
soldier1979 [14.2K]

Answer:

It is the right-angled triangle.

Step-by-step explanation:

According to the Pythagorean theorem, a^{2}+b^{2}=c^{2}, which c is the longest side of the triangle.

So, 27^{2}+36^{2}=45^{2} if the triangle is right angle.

LHS=27^{2} + 36^{2} = 2025

RHS=45^{2}=RHS=45^{2} = 2025

∵LHS=RHS

∴It is a right-angled triangle.

3 0
3 years ago
Read 2 more answers
Other questions:
  • There are 6 ants on a log. Then 7 ants crawl onto the log. How many ants are on the log now?
    8·2 answers
  • * Danny wants to earn $500,000 by the time he retires. He puts a huge bonus of $20,000 in an
    8·1 answer
  • Will give you 300 Brainley points please help
    6·1 answer
  • 1. Solve for x 3(x-6)+24=50+4(x+10)
    14·1 answer
  • Susan saw a recipe for a fruit salad she thought was fantastic for her upcoming get together of 20 people. It called for 1/2c of
    12·1 answer
  • Which expressions show the expanded form for 200.06 choose all answers that are correct.
    13·1 answer
  • The number sports training camp has a maximum capacity of 250 students if 85 have preregistered then how many students can still
    12·1 answer
  • What is the median of the data set?<br><br> 73, 20, 63, 23, 20, 40, 67
    12·1 answer
  • I really need help with this answer pls help fast
    7·1 answer
  • 4) Which number would divide the numerator and the denominator of the first
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!