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mel-nik [20]
3 years ago
11

Jamal performed an experiment flipping a coin. He did 10 trials and then his arm got tired. He recorded his results in the table

. Based on the experimental probability, Jamal predicted that the number of times the coin lands heads up will always be greater than the number of times it lands tails up. What is the error in his prediction?
Mathematics
2 answers:
AleksAgata [21]3 years ago
8 0

Answer:

The error in his prediction is that he had too small of a sample size for the data to be reliable in how the trend would continue.

aivan3 [116]3 years ago
7 0

Answer:

He did not perform enough trials to compare the theoretical and experimental probabilities.

Step-by-step explanation:

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Find the slope of the line
Alexeev081 [22]
The slope is 2. rise over run.
4 0
3 years ago
Solve the nonlinear system of equations. State the number of solutions.
WITCHER [35]

Answer:

Step-by-step explanation:

Hello,

Question 15

We can search x such that:

   x^2-4x+4=2x-5\\\\\text{*** subtract 2x-5 from both sides ***}\\ \\x^2-4x-2x+4+5=0\\ \\\text{*** simplify ***}\\ \\x^2-6x+9=0 \\ \\\text{*** we can notice a perfect square ***}\\ \\x^2 -2\cdot x \cdot 3 + 3^2=(x-3)^2=0\\\\\text{*** taking the root ***}\\\\x-3=0\\\\\large \boxed{\sf \ \ x=3 \ \ }

There is 1 solution.

Question 16

Again, we search x such that:

  x^2-8x+15=2x-6\\\\\text{*** subtract 2x-6 from both sides ***}\\\\x^2-8x-2x+15+6=0\\\\\text{*** simplify ***}\\\\x^2-10x+21=0 \\ \\\text{*** we are looking for two roots where the sum is 10 and the product is 21 = 7 x 3 ***} \\\\x^2-7x-3x+21=x(x-7)-3(x-7)=(x-3)(x-7)=0\\\\\large \boxed{\sf \ \ x= 3 \ or \ x =7 \ \ }There are two solutions.

 

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

7 0
3 years ago
Plssssss help me ill mark you brainliest
victus00 [196]

The logical approach would be to look at the totals, as you're trying to get the class favourite. Looking at such values, we see that Spiderman is the most trending, with the higher frequency, making it the class favourite.

8 0
3 years ago
Read 2 more answers
Please Help!! What is the next step in the proof? Choose the most logical approach.
marta [7]

Answer:

statement D is correct.

<em>Statement: ∠7 ≅ ∠6 and ∠8 ≅ ∠5</em>

<em>Reason: Vertical Angles Theorem</em>

Step-by-step explanation:

Given that

3 ≅ ∠7 and ∠4 ≅ ∠8

from statement 2 because they are corresponding angles.

∠8 ≅ ∠5

because its vertical angles

The vertical angles theorem is about angles that are opposite each other.

So,

∠4 ≅ ∠8 and ∠8 ≅ ∠5

which means

<h3> ∠4 ≅ ∠5 </h3>

Hence,

∠3 = ∠7

∠4 = ∠5

they are known as interior alternative angles.

7 0
3 years ago
he sum of the first two terms of a G.P is 27 whereas the sum of the second and third term is 54. Find the first term and the com
viktelen [127]

Answer:

{ \tt{sum =  \frac{a(r {}^{n - 1} )}{n - 1} }} \\ 27 =  \frac{a(r {}^{2 - 1} )}{2 - 1}  \\ { \bf{27 = ar -  -  - (i)}} \\  \\ 54 =  \frac{a( {r}^{3 - 1} )}{3 - 1}  \\ { \bf{108 = a {r}^{2} -  -  - (ii) }} \\ { \tt{(ii) \div (i) : }} \\ r =  \frac{108}{27}  \\ { \bf{common \: ratio = 4}} \\ { \bf{first \: term =  \frac{27}{4}  }}

7 0
3 years ago
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