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topjm [15]
3 years ago
14

A fair coin to tossed in the air four times if the experimental probability of landing on tails is 1/4,then what is the differen

ce between the experimental and theoretical probability
Mathematics
1 answer:
cupoosta [38]3 years ago
3 0
The experimental probability is 1/4 because of the four times the coin was flipped, it only landed on tails once, and on heads the other three times.

The theoretical probability, however, is 1/2 because there are two possible outcomes that are both equally likely. As your sample size increases, your experimental probability will get closer and closer to your theoretical probability.
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Two lemon creams plus four fudge cookies have 450 calories. Four lemon creams plus two fudge cookies have 420 calories. How man
Gnoma [55]

Answer:

Each fudge cookie has 80 calories.

Each lemon cream has 65 calories.

Step-by-step explanation:

We will let \ell represent the calories in lemon creams and f represent the calories in fudge cookies.

Two lemon creams and four fudge cookies together have 450 calories. So, we can write the following equation:

2\ell+4f=450

And four lemon creams plus two fudge cookies together have 420 calories. So, we can write the following equation:

4\ell+2f=420

We now have a system of equations. We can solve this by elimination.

For the first equation, we can multiply both sides by -2. This way, the \ell will cancel when we add the two equations together.

So, the first equation becomes:

-4\ell-8f=-900

Add this to the second equation. Hence:

(-4\ell+4\ell)+(-8f+2f)=(-900+420)

Simplify:

-6f=-480

Divide both sides by -6. Hence:

f=80

So, there are 80 calories in one cookie.

We can use the first equation again to find the amount of calories in one cream. We have:

2\ell+4f=450

Substituting 80 for f yields:

2\ell+320=450

Then it follows that:

\ell=65

So, there are 65 calories in each lemon cream.

5 0
3 years ago
Read 2 more answers
If you rolled two dice, what is the probability
Tatiana [17]

Answer:

1/36

Step-by-step explanation:

There's only one situation where you can roll a sum of 2 (1,1)

so the final answer is just 1/36

4 0
3 years ago
Please help me figure out the answer to this I'm a bit confused
scZoUnD [109]

Answer:

y= 1/2x + 1

Step-by-step explanation:

Refer to y=mx+b, m=slope and b= y-intercept

First, you find the slope: you can find the slope by finding the rise over run between two points. Rise= 1, Run=2. The slope is rise/run (rise over run), so the slope would be 1/2 (one half).

Next, find the y-intercept. It is where the line touches the y-axis. Here, it would be 1.

Finally, put these in y=mx+b form:

y=(slope)x+(y-intercept) ---> y= 1/2x + 1

I tried my best to explain everything, I hope you found this helpful!

8 0
3 years ago
Read 2 more answers
What does 25% of 80 equal
Anna007 [38]

Answer:

20

Step-by-step explanation:

25*4 equals 100  so 80/4 is 20.

4 0
3 years ago
Read 2 more answers
Express the radical using the imaginary unit, iii.<br> Express your answer in simplified form.
Reika [66]

iii\implies i^3\implies i^2\cdot i\implies (-1)\cdot \sqrt{-1}\implies -\sqrt{-1}\implies -i

4 0
1 year ago
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