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
galben [10]
3 years ago
13

I put the question in a doc cuz its a screenshot, please help

Mathematics
1 answer:
blagie [28]3 years ago
4 0

Answer:

38

Step-by-step explanation:

90-52

I hope this helps

You might be interested in
A,B and c lie on a straight line segment A , E and d lie on a straight line segment AB = 5cm AC= 30cm and EB = 4cm work out the
pav-90 [236]
I'm not sure, I don't no
4 0
3 years ago
Bradley had 25 baseball cards in his collection. He receives x number of baseball cards for his birthday.
Vinil7 [7]

Answer:

my friends last name is bradley

Step-by-step explanation:

4 0
3 years ago
A game is played using ne die. If the die is rolled and shows 3, the player wins $45. If the die shows any number other than 3,
I am Lyosha [343]

Answer:

-$13.5

Step-by-step explanation:

Let x be a random variable of a count of player gain.

- We are told that if the die shows 3, the player wins $45.

- there is a charge of $9 to play the game

If he wins, he gains; 45 - 9 = $36

If he looses, he has a net gain which is a loss = -$9

Thus, the x-values are; (36, -9)

Probability of getting a 3 which is a win is P(X) = 1/6 since there are 6 numbers on the dice and probability of getting any other number is P(X) = 5/6

Thus;

E(X) = Σ(x•P(X)) = (1/6)(36) + (5/6)(-9)

E(X) = (1/6)(36 - (5 × 9))

E(X) = (1/6)(36 - 45)

E(X) = -9/6 = -3/2

E(X) = -3/2

This represents -3/2 of $9 = -(3/2) × 9 = - 27/2 = -$13.5

3 0
3 years ago
A source of information randomly generates symbols from a four letter alphabet {w, x, y, z }. The probability of each symbol is
koban [17]

The expected length of code for one encoded symbol is

\displaystyle\sum_{\alpha\in\{w,x,y,z\}}p_\alpha\ell_\alpha

where p_\alpha is the probability of picking the letter \alpha, and \ell_\alpha is the length of code needed to encode \alpha. p_\alpha is given to us, and we have

\begin{cases}\ell_w=1\\\ell_x=2\\\ell_y=\ell_z=3\end{cases}

so that we expect a contribution of

\dfrac12+\dfrac24+\dfrac{2\cdot3}8=\dfrac{11}8=1.375

bits to the code per encoded letter. For a string of length n, we would then expect E[L]=1.375n.

By definition of variance, we have

\mathrm{Var}[L]=E\left[(L-E[L])^2\right]=E[L^2]-E[L]^2

For a string consisting of one letter, we have

\displaystyle\sum_{\alpha\in\{w,x,y,z\}}p_\alpha{\ell_\alpha}^2=\dfrac12+\dfrac{2^2}4+\dfrac{2\cdot3^2}8=\dfrac{15}4

so that the variance for the length such a string is

\dfrac{15}4-\left(\dfrac{11}8\right)^2=\dfrac{119}{64}\approx1.859

"squared" bits per encoded letter. For a string of length n, we would get \mathrm{Var}[L]=1.859n.

5 0
3 years ago
Tim answered all the questions on his math test but got 101010 answers wrong. He received 444 points for every correct answer, a
3241004551 [841]

Answer:

Step-by-step explanation:

Let x represent the number of questions that Tim got right in the math test.

The number of questions that Tim got wrong in the math test is 10.

If the total number of questions on the math test is q, it means that

x + 10 = q

If he received 4 points for every correct answer and there was no penalty for wrong answers, it means that he received 0 point for a wrong answer. If

his score was 76 points, it means that

4x + 0 × 10 = 76

4x = 76

Therefore, the required equations are

x + 10 = q

4x = 76

6 0
3 years ago
Read 2 more answers
Other questions:
  • Games are $25 each, and Caleb has $125 to spend. How many games can Caleb buy if he uses all his money?
    14·2 answers
  • What is the value of a?
    6·1 answer
  • Solve for 7 &lt; -1/9a<br> Please show your work
    14·1 answer
  • Plssssss help me ill mark you brainliest
    11·2 answers
  • Manuel bought 17 pounds of flour for $7. How many dollars did he spend per pound?
    15·1 answer
  • A triangle with an angle measuring 140° must be which of these? isosceles equilateral right obtuse acute
    11·1 answer
  • I kneed help plsssssssssssssssssss
    15·2 answers
  • Find the circumference of the circle. area = 121pi ft2
    13·1 answer
  • The $23^\text{rd}$ term in a certain geometric sequence is 16 and the $28^\text{th}$ term in the sequence is 24. What is the $43
    11·1 answer
  • Chelsea is having a game night at her house this Friday. She has a budget of $26. She buys two pizzas for $18 and spends the rem
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!