On a quiz there are four multiple-choice questions worth 3 points each and two true/false questions
worth 1 point each. Each multiple-choice question has five possible choices. If a student randomly
guesses on each question, what is the expected value of the student's score on the test?
2.8
5.4
3.4
1.8
Can anyone help me ples?

Answers

Answer 1

Answer:

3.4

Step-by-step explanation:

Answer 2

Answer:

3.4

Step-by-step explanation:

Since we have given that

Number of multiple choice question = 4

Number of true false questions = 2

Number of points for each multiple choice question = 3

Number of points for each true false question = 1

Number of choices in multiple choice = 5

Probability of getting correct answer in multiple choice question =   1/5

Probability of getting correct answer in true false question = 1/2  

answer would be 17/5 which is equal to 3.4


Related Questions

Q11:
Around 80% of the human body mass is water. If Jenny weighs 106 pounds, about how much of her body weight is water?
​Round to the nearest whole number

Answers

Answer:

85

Step-by-step explanation:

To solve this, you would have to figure out what 80% of 106 is. 80% of 106 is 84.8. If you were to round this to the nearest whole number, you would get 85.

????????????????????????????

Answers

Answer:

A) 5x-7y=42

Step-by-step explanation:

We know that 5 x 7 = 35 then add 7 = 42

We divide 5 and 7 by 5/7

5/  5/7 = 0.1

7/ 5/7 = 0.2

We find 0.1 = 1/10 and we know that 1/10 of 35 is 3.5

We find 0.2 = 2/10 and we know that 2/10 of 35 is 7 so the answer 7 matches.

We then use 7 for y and keep 5 for x.

Solve for x: −1 < x + 3 < 5 2 < x < 8 −4 < x < 2 2 > x > 8 −4 > x > 2

Answers

Answer:

−1x+352x8−4x22x8−4x2 = −4x30+352x8−4x2−x

Step-by-step explanation:

Let's simplify step-by-step.

−1x+352x8−4x22x8−4x2

=−x+352x8+−4x30+−4x2

1: Pulling out like terms

2: Checking for a perfect cube

3: Trying to factor by pulling out

4:  

-x • (4x29 - 352x7 + 4x + 1)

      or

Answer: =−4x30+352x8−4x2−x

Hope this helps.

Solve the inequality:
-40 < 2(a + 12).

Answers

Answer:

a> -32

Step-by-step explanation:

-40 < 2(a +12)

-40 < 2(a) +2(12) (expand)

-40 < 2a +24

-40 -24 < 2a (bring constant to one side)

-64 < 2a (simplify)

2a > -64

a > -64 ÷2

a > -32

416
Math - Week 5 continued:
Monday:
Clark is wondering how his grade is in math class. His last 6 test scores are shown below. Find the
mean, median, mode, and range of his test scores.
87
98
82
76
95
93
Range -
Mean =
none
Median
Mode =
Accelerated students: Answer the above and make a line plot of the data.

Answers

76 82 87 93 95 98

Mean -
76+82+87+93+95+98 = 531
531/6 = 88.5

Range -
98 - 76 = 22

Median -
Because there are 6 numbers you have to find the average of the middle two
87+93 = 180
180/2 = 90

Mode -
No number is repeated so there is no mode.

Answer:

Mean: 88.5

Median:90

Mode:98

Step-by-step explanation:

For mean, what you need to do is add all of those numbers up and divide them by how many you have. So once you add up all those numbers, divide them by six because there are 6 numbers. For the median, order the numbers from smallest to biggest and cross off every one until you get left with the number in the middle. If there is an even number of numbers and there are two middle ones, add them together and divide them by 2. For mode, it’s the one with the most. Please don’t hesitate to write back if you need anything else or any of the answers are incorrect. Have an amazing day!!

Is 1,250 ml < ,=,or > to 1.25

Answers

Answer:

= to

Step-by-step explanation:

The given measurement in liters written as 1.25l. Therefore, 1250 milliliters is equal to 1.25 liters.

What is metric conversion?

Metric Conversion refers to the conversion of the given units to desired units for any quantity to be measured.

The volume in liters is equal to the milliliters divided by 1,000.

The given measurement is 1250 ml.

We know that, 1 liter = 1000 ml

To convert milliliters to liters, divide the given quantity by 1000.

Here, 1250/1000 = 1.25 l

Therefore, 1250 ml in liters is equal to 1.25 l.

To learn more about the metric conversion visit:

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Mike claims that (23)5 = 215 Sarah claims that (23) 5 = 28. Who is correct? Explain your reasoning

Answers

Answer:

Mike

Step-by-step explanation:

23 x 5 = 215 and Sarah added instead of multiplying

Answer:

Mike is correct

Step-by-step explanation:

Mike multiplies 23 and 5 when Sarah adds 23 and 5.

Circle the correct term to complete each sentence.
(you don't have to circle just put the question number and put the answer pls help I need this!​

Answers

Answer:

10. Ounces

11. weight

12. Pounds

Step-by-step explanation:

Hello there!

10. The unit of measurement that would be most appropriate to measure a paper clip's weight is in (ounces).

11. The type of measurement that is used to measure how heavy an object is called (weight).

12.  The unit of measurement that would be the most appropriate to measure the weight of a flour bag is in (pounds).

There are 16 teams in the state basketball tournament. If each team has an equal chance of winning, what are the chances that the places will go as follows
1st place- West Hordon HS
2nd place- Riverton
3rd place- Bingham
4th place- Copper Hills

Answers

Answer:

1/64

Step-by-step explanation:

During one week, the price of a stock decreased $4 per day for 3 days and increased $2 per day for 4 days. Which integer
represents the change in the price of the stock over the week?
-20
-4
4
20

Answers

Answer:

-4

Step-by-step explanation:

so 4 would be negative because it decreased and 2 would be positive because it increased so multiply -4 by 3 wich is -12 then add it by 2 times 4 which is 8 and it is -4

The addition is one of the four fundamental mathematical operations. The correct option is B.

What is Addition?

The addition is one of the four fundamental mathematical operations, the others being subtraction, multiplication, and division. When two whole numbers are added together, the total quantity or sum of those values is obtained.

Given that the price of a stock decreased $4 per day for 3 days and increased $2 per day for 4 days. Therefore, The change in the price of the stock is,

Change in the price = (-$4 × 3 days) + (+$2 × 4 days)

                                  = -$12 + $8

                                  = -$4

Hence, the correct option is B.

Learn more about Addition:

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Find the hypotenuse.*
2 cm
8 cm

Answers

Answer:

square root of 68, or 8.24

Step-by-step explanation:

You have to use the Pythagorean theorem. 2 and 8 will both be squared. 2 squared is 4, and 8 squared is 64. Add those up and you get 68. Since the Pythagorean theorem states that a squared + b squared = c squared, you have to square C.

The experimental probability of spinning a 3 is what?

am I correct?

Answers

Answer:

16/70

Step-by-step explanation:

14+12+16+15+13=70

The 3 has 16.

so the probability is 16/70.

Write the algebraic expression that matches each graph? PLS HELP I NEED HELP!!!

Answers

Looks like y = |x| because the slopes of the lines are both 1

You shift it to the right making it |x-2| and you shift it down making y = -2

combine to get y = |x - 2| - 2.

Answer: -/x/-3

Step-by-step explanation:

slope????????????????​

Answers

M = Undefined (because the line is perfectly vertical)

4^7/4^9 what is it please help​

Answers

Answer:

uhhhhh 0.0625?

Step-by-step explanation:

i may be wrong

Which statistical question does the data in Table 2 answer?

Answers

Answer:

Average weight

Step-by-step explanation:


Write 10/3
as a mixed number.

-​

Answers

10/3 would be 3 and 1/3.

Answer: 3 1/3

Step-by-step explanation:

Because 3 goes into 10, three times. That leaves you with one that one is remaining on that 3 so that becomes 1/3 if you combine those you get 3 1/3.

Zelda completed the right column of the table to help her find the difference.
Five-sixths minus one-ninth

In which step did his first error occur?

Step 1,2,3, or 4

Answers

Answer:

His error occurred in the last step

Explanation:

He was supposed to calculate -

[tex]\frac{5}{6} - \frac{1}{9} \\or\\\frac{15}{18} - \frac{2}{18} \\[/tex]

which would equal -

[tex]\frac{13}{18} \\not\\\frac{17}{18}[/tex]

Because he added instead of subtracted.

Hope this helps!

stay safe

Riley earned enough points on his gas card to save 10 cents per gallon on his next gas purchase.If the price per gallon of gas is $2.50. what percent will he be saving per gollon

Answers

Answer:

4%

Step-by-step explanation:

4% of $2.50 is 10 cents

Riley can save 4% per gallon as his savings during the purchase of gas.

What is a percentage?

"A percentage is a number or ratio expressed as a fraction of 100. It is a relative value indicating hundredth parts of any quantity. It is often denoted using the % percent sign".

For the given situation,

Price per gallon of gas = $2.50

Riley saves price per gallon = 10 cents

We know that, [tex]\$1 = 10 cents[/tex]

⇒ [tex]\$2.50=2.50 (100) cents[/tex]

⇒ [tex]\$2.50=250cents[/tex]

Now 10 cents are how many percent of 250 cents can be determined by

⇒ [tex]\frac{10}{250}(100)[/tex]

⇒ [tex]4\%[/tex]

Hence we can conclude that Riley can save 4% per gallon as his savings during the purchase of gas.

Learn more about the percentage here

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please help me(picture attached) please explain too if you can

Answers

Answer:

B) x=2

Step-by-step explanation:

If it is x= then it is a vertical line on that number, so x=2 is that vertical y-axis on the number two which divides the parabola in half, symmetry

Answer:

B. x = 2

Step-by-step explanation:

An easy trick to see what the axis of symmetry is for parabolas is to find the vertex. In this graph, the vertex is at x=2.

Please mark me as brainliest if I helped. Thank you!

What is the missing number in this sequence? 3,7,15, 63, 127

Answers

Answer:

31

Step-by-step explanation:

3 times 2 is 6, plus 1 is 7

7 times 2 is 14, plus 1 is 15

15 times 2 is 30, plus 1 is 31

31 times 2 is 62, plus 1 is 63

63 times 2 is 126, plus one is 127

.

.

.

pls help , need this done by tomorrow.

Answers

Answer:

3x+2y = 30

Step-by-step explanation:

The area of the rectangle on the left is

A = 3x

The area of the rectangle on the right is

A = 2y

The sum of the areas is

3x+2y = 30

Suppose that having a male child and having a female child are independent events and that the probability of each is 1/2. A couple has decided they want to have 10 children total. They already have 5 male children and are about to have another child. Select all statements which must be true.

Answers

Answer:

There is 50% chance that the next child is female

Step-by-step explanation:

Scott took 7 math tests in one semester.
His scores on the tests were: 89, 73, 84, 91, 87, 77, 94
What was his mean test score.
Answer:

Answers

Answer:

His mean test score was 85.

Step-by-step explanation:

The mean of something is the average of a data set.

To find the average, we find the sum of all the scores, and divide it by the number of scores there are.

Let's find the sum:

89+73+84+91+87+77+94

595

There are 7 total scores.

595/7=85

Answer:

85

Step-by-step explanation:

Add 89+73+84+91+87+77+94=595/7=85

Can someone help me with this pls :)

Answers

Answer:

it is F

Step-by-step explanation:

Answer: f

Step-by-step explanation: the square root of 10 is 3.16 so it’s between 3.1 and 3.2

use ⧍PQR to answer the question

Answers

Answer:

3/4

Step-by-step explanation:

Tangent = opposite / adjacent

So the equation would be:

Tan P = 6/8

Simplify 6/8 to get 3/4.

Answer:

What is that?

Step-by-step explanation:

MATH, please help! I don’t understand

Answers

Answer:

The first option is correct

Step-by-step explanation:

Surface area for a cylinder: [tex]2\pi r^2+2\pi rh[/tex]

Which expression is equivalent to 8(− 5+1.25x)−105(0.6x+1)?


A. 73x+65

B. 0.65x+65

C. − 53x−145

D. − 61.75x−39

Answers

So the right answer is of option C (-53x-145)

Look at the attached picture

Hope it will help you

Good luck on your assignment

Answer:

[tex] = - 53x - 145[/tex]

Answer C is correct

Step-by-step explanation:

[tex]8( - 5 + 1.25x) - 105(0.6x +1) \\ - 40 + 10x - 63x - 105 \\ - 40 - 1 05+ 10x - 63x \\ = - 41 - 145[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

You roll a standard number cube. What is the probability of rolling a two? Express your answer as a fraction. I got 1/3 but idk if its right.

Answers

Answer:

1/6

Step-by-step explanation:

The reason for this is because there is only one number 2 on the dice and since there is six sides you would end up getting 1/6.

jena walks 6 miles. karla walks 3 times as far as jena. which expression shows how many miles karla walks?​

Answers

Answer:

6 times 3

Step-by-step explanation:

6 times 3 ugh I just want to post a short answer

Answer:

3x6

Step-by-step explanation:

6x3 would be the correct way to do it but since they want to know how much karla walks it 3x6

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