There are 10 questions on a true-false test. A student feels unprepared for this test and randomly guesses the answer for each of these. (a) What is the probability that the student gets exactly 7 correct? (b) What is the probability that the student gets exactly 8 correct? (c) What is the probability that the student gets exactly 9 correct? (d) What is the probability that the student gets exactly 10 correct? (e) What is the probability that the student gets more than 6 correct?

Answers

Answer 1

Answer:

Probability getting 7 correct :- 1/10Probability getting 8 correct :- 1/10 Probability getting 9 correct :- 1/10Probability getting 10 correct :- 1/10 → Probability getting more than 6 :- 4/10

Related Questions

Identify the correct weight to the nearest 1/8 pound, then reduce the fraction if possible.

A. 2 12/16 = 2 3/4 Ib
B. 2 2/8 = 2 1/4 Ib
C. 2 14/16 = 2 7/8 Ib
D. 2 1/2 Ib

Answers

The measured weight is (2 + 3/4) lb, so the correct option is A.

How to read the measure?

First, we can see that the needle is between the 2lb and 3lb mark, so we know that we have a measure between these two values.

Now, let's count the number of small lines between the needle and the 2lb mark. There are 12 marks (the 12th is below the needle). Then the measure will be:

(2 + 12/16) lb.

Now we want to simplify the fraction. If we divide both numerator and denominator by 4, we get:

12/16 = 3/4

Then the weight is:

(2 + 3/4) lb

Then the correct option is A.

If you want to learn more about weight, you can read:

https://brainly.com/question/11408596

Answer: Now, let's count the number of small lines between the needle and the 2lb mark. There are 12 marks (the 12th is below the needle). Then the measure will be:

(2 + 12/16) lb.

Now we want to simplify the fraction. If we divide both numerator and denominator by 4, we get:

12/16 = 3/4

Then the weight is:

(2 + 3/4) lb

Then the correct option is A.

Step-by-step explanation:

What length is X
3.0000
4.0000

Answers

kinda confused not sure if we have an equation or other numbers to help answer

How many different ways can 6 different positions be filled by 12 applicants?

Answers

Answer:665280

Step-by-step explanation:

12•11•10•9•8•7=665280

Need help with his geometry question. Find the value of x

Answers

Answer: 3

Step-by-step explanation:

how do you find the square root for 9cm ​

Answers

Square Root of 9:-

[tex]\rightarrow[/tex]Square root of 9 is a whole number that is multiplied by itself to get the original number. The actual value of square root of 9 is 3.

√9 = ±3

[tex]\rightarrow[/tex]If we square +3 or -3, the resulting value will be equal to 9.

[tex]\sf{(+3)^2 = 9}[/tex]

[tex]\sf{(-3)^2 = 9}[/tex]

How to find?:-

[tex]\rightarrow[/tex]Number 9 is an odd number and not a prime number. Prime numbers have only two factors, 1 and the number itself. But as we know, 9 have three multiple factors, 1, 3 and 9 itself. Thus, we can write the number 9 in the form of multiple as;

[tex]\sf{1 × 9 = 9}[/tex][tex]\sf{3 × 3 = 9}[/tex][tex]\sf{9 × 1 = 9}[/tex]

[tex]\rightarrow[/tex]You know that number 9 is a multiple of 3 or when 3 is multiplied by itself, we get the number 9. Therefore, we can write the square root of 9 as;

➾[tex]\sf{\sqrt{9}}[/tex]

➾[tex]\sf{\sqrt{3×3}}[/tex]

➾[tex]\sf{\sqrt{3^2}}[/tex]

[tex]\rightarrow[/tex]The square cancels the square root of a number. Therefore, if we cancel the square root with a square in the above expression, we get,

➾[tex]\sf{\sqrt{9}}[/tex] = ±3

__________________________________

Hope it helps you:)

h=-16t^2+320, how long will it take to hit the ground

Answers

Answer:

It will take 5 seconds

Find the value of x. 3 X 6 x = [?] = Give your answer in simplest form. Enter.​

Answers

Answer: 12

Step-by-step explanation:

Answer:

x

Step-by-step explanation:

We can find the value of x using Euclidian theorem:

6^2 = 3*x

36 = 3x divide both sides by 3

12 = x

in what rate of interest rupees 4000 amounts to Rupees 6000 in 2 years​

Answers

Answer:

Ans:25%

Step-by-step explanation:

In what rate of interest Rs 4000 amounts to Rs 6000 in 2 years? Ans:25%

What is the sum of the following equation?

three tenths plus thirty nine hundredths equals blank

Answers

Answer:

Step-by-step explanation:

Writing out the word question in numbers: three tenths plus thirty nine hundredths equals blank -

3/10 + 39/100 = ?

= 30/100 + 39/100

= 69/100

or 0.69 or sixty nine hundredths.

First convert words to no

three tenths=3/10thirty nine hundreds=39/100

find sum

3/10+39/10030+39/10069/1000.69

You are considering buying a swimming pool and have narrowed the choices to
two-one that is circular and one that is rectangular. The width of the rectangular pool is three times its depth. Its length is 6 feet more than its width. The circular pool has a diameter that is twice the width of the rectangular pool, and it is 2 feet deeper.

16. Find the ratio of the volume of the circular pool to the volume of the rectangular pool.

17. The volume of the rectangular pool is 2592 cubic feet. How many gallons
of water are needed to fill the circular pool if I gallon is approximately 0.134 cubic foot?

Answers

Answer:

245² ft high or something else

b) The following patterns are made using small squares.
Pattern 1
Pattern 2
Pattern 3
Write an expression for the number of small squares in pattern n.
Write your answer in the form (n + a)? + b or an? + bn + C where a, b and care integers.

Answers

Answer:

(N+2)^2+6

Step-by-step explanation:

What is the slope of the line y = − 4 , equals, minus, 4? Choose 1 answer:

Answers

Answer: the slope is 0

Step-by-step explanation:

What is the value of n in the equation below?

Answers

Answer:

9

Step-by-step explanation:

12ⁿ⁻⁵ = 12⁴

n - 5 = 4

n = 9

Need assistance on this problem

Answers

Answer:

The height of the tower should be 120 m

Step-by-step explanation:

A company makes chocolate candies in the shape of a solid sphere. Each piece of candy has a diameter of 9 cm . If a box contains 10 pieces of candy, how much chocolate does the box contain?
Use 3.14 for π, and do not round your answer.

Answers

Step-by-step explanation:

The Volume of a Sphere ( One piece of candy ) = 4/3πr³

r = diameter/2 = 9/2 = 4.5 cm

Volume = 4/3(3.14)(4.5³)

V = 381.51 cm³

the box contains 10 pieces so the box contains :

381.51 x 10 = 3815.1 cm³ of chocolate

70 points and brainliest if the answer is correct

5^4x5^7

A. 125^11
B. 15^11
C. 5^28
D. 5^11

Answers

Answer:

Option D

Step-by-step explanation:

If the bases are the same in a multiplication problem, then you can simply add the exponents. (i.e., a² × a⁶ = a²⁺⁶ = a⁸)

[tex]\bullet \rightarrow 5^4\times5^7[/tex]

[tex]\bullet\rightarrow 5^{4 + 7}[/tex]

[tex]\bullet \rightarrow \boxed{5^{11}}[/tex]

Answer: D

Step-by-step explanation:

5^4 x 5^7

You will add the exponent 4 + 7 = 11

You will keep your base 5^11

What are the y-intercepts of this conic section?



(0, −4) and (0, 4)

(0, −2) and (0, 2)

no y-intercepts

(−2, 0) and (2, 0)

Answers

Step-by-step explanation:

the second one, of course.

a y-intercept is a point where x = 0.

the 2 options are clearly having y-values of -2 and +2.

Given the figure below , find the blues of x and z

Answers

Check the picture below.

The data set below represents the different costs of a tablet at an electronic store. $298. $196, $248, $379, $319, $276, $198, $349, $319. What is the median?​

Answers

Answer:median of (298, 196, 248) - 196

median of (379, 319) - 349

median of (276,198, 349) - 198

Step-by-step explanation:

Answer:

298

Step-by-step explanation:

Given:

$298,$196, $248, $379, $319, $276, $198, $349, $319

Solve:

Put in order:

196, 198, 248, 276, 298, 319, 319, 349, 379

Median -

Arrange data values from lowest to highest value

The median is the data value in the middle of the set

If there are 2 data values in the middle the median is the mean of those 2 values.

Solution:

196, 198, 248, 276, 298, 319, 319, 349, 379

196, 198, 248, 276, 298, 319, 319, 349, 379

196, 198, 248, 276, 298, 319, 319, 349, 379

196, 198, 248, 276, 298, 319, 319, 349, 379

 Hence, the median is 298.

~lenvy~

The sum of two integers is 72 and their difference is 8. Find the integers

Answers

The answer is 9 it’s correct
Hence the 2 integers are 32 and 40

pls help me i will mark as brilliant​

Answers

The question is not clear.

120 feet is to 150 feet as 8 feet is to ten feet write the proportion HELP PLEASE!!! AND PLEASE SHOW HOW TO DO IT

Answers

Answer:

Step-by-step explanation:

120/150  = 0.8

8/10 = 0.8

8x15=120

10x15=150

Suppose if, instead of depositing the $600 all at once, you deposit nothing at the beginning and you divide up the $600 into 12 envelopes each with $50. Find the balance after one year if you deposit one $50 envelope each month, all year, into an account that pays 5% APR with monthly compounding.

Answers

The balance after one year if you deposit one $50 envelope each month, all year is  $613.95.

What is the balance after one year?

The balance after 1 year can be determined using this formula:

Amount deposited monthly x annuity factor

Annuity factor = {[(1+r)^n] - 1} / r

Where:

r = interest rate = 5% /12 = 0.417%n = number of years = 1 x 12 = 12

Annuity factor = 1.004167^12 - 1 / 0.00417 = 12.279082

Balance = 12.279082 x 50 = $613.95

To learn more about annuities, please check: https://brainly.com/question/24108530

This figure represents a compartment in a container for storing sewing supplies. Another compartment is identical except that it is 3 centimeters taller.

What is the difference in volume of the two compartments?

Enter your answer in the box.
cm³
Right trapezoidal prism. The height of the trapezoid base is labeled 7 cm. The larger base is labeled 15 cm and the shorter base is labeled 5 cm. The two legs of the trapezoid are labeled 10 cm. The height of the prism is labeled 8 cm.

cm³


help please

Answers

Answer:

140

explanation:

I took the test

Answer:

210 cm

Step-by-step explanation:

If the trapezoid in the picture is the one mentioned in the problem, then the answer is 210 cm. I did the test.

Help help help help help help

Answers

Answer:

The total of this whole angle, which is represented by ∠ABD, measures 64°.

We are given that apart of this angle, ∠CBD measures 30°, so that'd mean that the other part of this angle, ∠ABC, would measure 34°.

This is because both angles ABC and CBD combined would equal a total of 64°.

So we set up the equation;

30 + x = 64

-30       -30

x = 34°, therefore ∠ABC = 34°.

Answer:

m∠ABC = 34°

Step-by-step explanation:

Given:

m∠ABD = 64°

m∠CBD = 30°

BC is the angle bisector of ∠ABD, which means that an angle is cut in half into two equal pieces. The line divides an angle into two angles.

∠ABC + ∠CBD = ∠ABD

m∠ABC = m∠ABD - m∠CBD

m∠ABC = 64° - 30°

m∠ABC = 34°

hope this helps!! p.s. i really need brainliest :)

Find the area of the shaded region. Use 3.14 for π.

Answers

Answer:  122 cm squared  (aprox)

Step-by-step explanation:

Area circle            pi* 10 squared   = 314 cm squared

Area rectangle  12x16 = 192 cm squared

                         314-192 = 122

pls do this thankuso much​

Answers

Ans: D

differentiate sinx=cosx and differentiate x=1

:)

Which of the following would describe Slope?
A Rise/Run


B The rate of change


C The steepness of a line


D All of the above

Answers

I guess A because rise/run is one graph and that’s how you plug the slope on the graph

Answer:

Rise/Run (A)

Step-by-step explanation:

The slope of a line measures the steepness of the line. Most of you are probably familiar with associating slope with "rise over run". Rise means how many units you move up or down from point to point. On the graph that would be a change in the y values. Run means how far left or right you move from point to point.

Michael has a bag with 2 red marbles, 4 white marbles and 3 purple marbles. He will randomly select 2 marbles from the bag one at a time without
replacement. What is the probability that he will choose a red marble first and then a white marble?
O 13/18
8/81
O 1/9
O 2/3

Answers

Answer:

1/9

Step-by-step explanation:

Given:

2 red marbles

4 white marbles

3 purple marbles

He will randomly select 2 marbles from the bag one at a time without

replacement.

To Find:

What is the probability that he will choose a red marble first and then a white marble?

Solution:

Since red marbles =2

White = 4

Total = 2+4+3 = 9

Select first time = 2/9

Select second time = 4/8

And then = Multiply

2/9 * 4/8 = 8/72

8/72 Simplify

1/9

[RevyBreeze]

Solve for x.

x−9=−524

Enter your answer as a mixed number in simplest form by filling in the boxes.

x = $$

Answers

X is equal to 515 that’s the correct answer after collecting like terms

Answer:

The answer is 1 7/8

Step-by-step explanation:

I did the test. Screenshot here;

Hope this helps!

Other Questions
im supposed to write a letter from aunt Alexandra to scout, what do i write about???!!! The force of a hammer drives a nail into wood. This is an example of? A. An unbalanced force.B. Gravitational force. C. Friction. D. Balanced forces. Make a title about the short paragraph and write a statement that is your own opinion about the paragraph Why does she suggest that chemical insecticides and herbicides be called biocides? What idea is she expressing by using this word? Is Carson opposed to the use of all toxins? Tom knows that in his school 10 out of every 85 students are left-handed.There are 391 students in Tom's school.how many students in Tom's school are left handed? 10 people each wants 3 slices but a box has 8 slices What motivated the south in the Civil War? The temperature in the freezer is -15C. The temperature outside the freezer is 10C. Find the difference between these two temperatures.Is the answer 25? Just checking :) Help help help math math help In a scale drawing, the length of a rectangular room is 6 inches, and the width is 3 inches. the actual length of the room is 18 feet. A What is the scale of the drawing. B In a new scale drawing of the same room, the length of the room measures 4 inches. What is the scale of the new drawing? Explain Help me solve this please To travel at a constant speed, a car engine provides 24 KW of useful power. The driving force on the car is 600 N. At what speed does it travel? Do you think society asks much of thecriminal court? explain your answer the following shape has 1 pair of parallel sides 2, 7, 3, 8 If f(x) = 2x - 5, f(5) = As a first responder, you don't have much control over the lamp color or the type of light on your response vehicles those decisions are made by the state and by _________ administrators. Find the values of x for which the denominator is equal to zero for 5x+6/x^2+6x+9 . none x = 3 x = 3 x = 3, x = 3 Frank McCourt, Whose Irish Childhood Illuminated His Prose, Is Dead at 78: What is a central idea of the Frank McCourt obituary?Question options:a) Despite earning a good living and then achieving fame, McCourt never lost touch with his impoverished background.b) McCourt never liked to publicly acknowledge his Irish roots until he finally sat down and wrote Angelas Ashes.c) Teaching became a way for McCourt to pass along the lessons he learned from literary success after Ashes became a juggernaut.d) McCourt had a falling out with his brother and other family members after they attempted to capitalize on his success. In general, bacterialcells are prokaryotic.Which cells are eukaryotic?a. Bacterial cellsb. Animal and plant cells( its b ) What will happen if the number of refugees continues to grow in war? Please Help. First To Answer Will Recieve Brainliest!!