Approximately 54% of mathematics students do their homework on time. In a class of 250 students, what is the mean, variance, and standard deviation if we assume normality and use the normal distribution as an approximation of the binomial distribution

Answers

Answer 1

Answer:

135

Step-by-step explanation:

250 x 54%=135


Related Questions

Which expression is equivalent to the given expression? 2x^2-14 +24

Answers

Answer:

Equivalent expression is (x - 4)(x - 3)

Step-by-step explanation:

[tex] {2x}^{2} - 14x + 24[/tex]

find the factors:

[tex] = (x - 4)(x - 3)[/tex]

(2x-12)(x-2)

after multiplying you'll get the same

Determine if the following are functions of x.


(a) 5(y + 1)3 + x2 = 1

Answers

9514 1404 393

Answer:

  is a function

Step-by-step explanation:

The graph passes the vertical line test, so the relation is a function of x.

A missile was fired from a submarine from 220 feet below sea level. If the missile reached a height of 10400 feet before exploding, what was the change in the altitude of the missile?

Answers

Answer:

10,620

Step-by-step explanation:

Since it reached a height of 10,400 before exploding and was 220 feet below sea level we need to add the two numbers together to get the total change in altitude.

You can think of it as sea level = 0 so 220 feet below sea level is -220 and 10,400 above sea level is +10,400 so what's the difference between the two.

Finding the Difference

10400 - (-220)

=  10400 + 220

=  10620

1 1/4 cups of flour per 1/8 cup of butter what is the unit rate

Answers

Answer:

10 cups of flour per cup of butter

Step-by-step explanation:

1.25 cups of flour per 1/8 cup of butter

1 ÷ 1/8 = 8

1.25 * 8 = 10

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

Find the equation of the line perpendicular line displayed below that passes through the point (-3,2). Explain your process. Express your answer in point-slope form

Answers

9514 1404 393

Answer:

  y -2 = 1/4(x +3)

Step-by-step explanation:

Process: find the negative reciprocal of the slope of the line shown and put the appropriate values into the point-slope equation.

__

The slope of the given line can be found as the ratio of rise to run between the marked points.

  m = rise/run = -8/2 = -4 . . . . counting grid squares

The desired line has a slope that is the opposite reciprocal of this:

  m' = -1/m = -1/-4 = 1/4

The point-slope equation of a line with slope m through point (h, k) is ...

  y -k = m(x -h)

Then the desired line with slope 1/4 through point (-3, 2) has equation ...

  y -2 = 1/4(x +3)

Prove: [tex]\frac{a}{b}[/tex] = \frac{c}{d}[/tex], then[tex]\frac{a+b}{b} = \frac{c+d}{d}[/tex]. show work pls :)

Answers

Step-by-step explanation:

[tex]\dfrac{a}{b} = \dfrac{c}{d}[/tex]

Add 1 to both sides of the equation:

[tex]\dfrac{a}{b} + 1 = \dfrac{c}{d} + 1[/tex]

Note that

[tex]\dfrac{a}{b} + 1 = \dfrac{a + b}{b}[/tex]

Likewise,

[tex]\dfrac{c}{d} + 1 = \dfrac{c + d}{d}[/tex]

Therefore,

[tex]\dfrac{a + b}{b} = \dfrac{c + d}{d}[/tex]

Find all the values in the interval (0.1, 0.4]

Answers

Answer:

infinite values

Step-by-step explanation:

there are infinite values between 0.1 and 0.4

0.234234,0.3,0.2743843 etc.

Algebra Please Help!!

Answers

Answer:

c = 5/9 (F-32)

F-32 = c ÷ (5/9)

F-32 = c × (9/5)

F-32= 9c/ 5

F= (9c/5) + 32

I hope I helped you^_^

How do we show 425/1000 as a decimal?

Answers

Answer:

0.425

Step-by-step explanation:

bro this is like 1st grade math

your answer would be 0.425 :))

Write an equation of the line below.

Answers

Answer:

y=x

Step-by-step explanation:

yep

that is the answer

Algebraic Expressions Use the Distributive Property to expand each expression 4(3x-9)​

Answers

Answer:

12x-36?

Step-by-step explanation:

well 4×3x and 9× 4 gives the answer

Line K intersects plane M at point R plane M contains line a. Point R is in line k but not in line a.

Answers

Answer:

plzz inbox me dear I'm feeling alone

Consider the equation −8x−5y=−10
A line parallel to the above line would have a slope of
A line perpendicular to the above line would have a slope of

Please Help!!

Answers

Answer:

Explanation :

The slope of the line with the equation -8x - 5y= -10 is -8/5 so the line parallel to it will have a slope of -8/5 because parallel limes have the same slope.

The line perpendicular to it will have a slope of 5/8. This is because the slopes of perpendicular lines add up to -1.

Hope this help

On Monday Ryan picked a third of a pound of strawberries. On Tuesday he
icked three-fourths of a pound of strawberries. What was the total weight of the
trawberries Ryan picked?

Answers

Answer:

[tex]17 \frac{1}{3} [/tex]

Step-by-step explanation:

1/3 pound = 5.333 ( 5 1/3 ) ounces

3/4 pound = 12 ( 12 ) ounces

447,077 is ____________________then 347,077.

Fill in the blank.​

Answers

447,077 is  greater than 347,077

447,077 greater than 347,077 by 100,000

447,077-347,077= 100,000

I can list more if you want! I hope I've helped!

What is the value of the expression?

3 * [(2 * 6 - 5) + (8 divided by 4)] - 1

A. 9
B. 11
C. 26
D. 32
Show Work!

Answers

[tex]3\cdot[(2\cdot6-5)+(8:4)]-1=\\\\=3\cdot[(12-5)+2]-1=3\cdot(7+2)-1=\\\\=3\cdot9-1=27-1=\boxed{26}[/tex]

In a mathematics class, half of the students scored 79 on an achievement test. With the exception of a few students
who scored 49, the remaining students scored 78. Which of the following statements is true about the distribution of
scores?
WILL MARK BRAINLIEST

Answers

In this situation, you have:
The mode is 79 (that’s the most common number).
The median is 78.5 (the middle value or the average of the two middle values, since there is an even number of test scores).
The mean is less than both of those, as it was brought down by the few scores of 49.

The means the mean will be less than median.

Answer: C

Given: g(x) = -4x and h(x) = 4x +3
Find: g(h(x+1))

Answers

Answer:

-16x-28

Step-by-step explanation:

h(x+1)= 4(x+1)+3 = 4x+7

g(h(x+1))= -4[4x+7] = -16x-28

Help solve please due tomorrow, thanks. 3x − 5 = 2x + 2

Answers

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

3x − 5 = 2x + 2

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

[tex] \large \sf \: 3x - 5 = 2x + 2[/tex]

Subtract 2x from both sides.

[tex] \large \sf \: 3x-5-2x=2 [/tex]

Combine 3x and -2x to get x.

[tex] \large \sf \: x-5=2 [/tex]

Add 5 to both sides.

[tex] \large \sf \: x=2+5 [/tex]

Add 2 and 5 to get 7.

[tex] \large{ \boxed {\bf \: x=7 }}[/tex]

Using the Principle of Mathematical Induction, prove that . n ^2 − n is even for n ≥ 1​

Answers

Base case: if n = 1, then

1² - 1 = 0

which is even.

Induction hypothesis: assume the statement is true for n = k, namely that k ² - k is even. This means that k ² - k = 2m for some integer m.

Induction step: show that the assumption implies (k + 1)² - (k + 1) is also even. We have

(k + 1)² - (k + 1) = k ² + 2k + 1 - k - 1

… = (k ² - k) + 2k

… = 2m + 2k

… = 2 (m + k)

which is clearly even. QED

can you help me to solve this​

Answers

Answer:

<B = <C(angles in a isoceles traingle)

Answer:

angle B is equal to angle C because it's a isosceles triangle with two equal sides and two equal angles

Please help me solve this equation​

Answers

I hope it will help you . But I have confused whether you have asked the second question or not . If you have asked , please send that question .

(18 - 3)2 = ?
show your work
help me pls ty​

Answers

Answer: 30

Step-by-step explanation:

18 - 3 is in the parenthesis so you have to solve that first. it’s 15 so the equation would then become (15)2 which is equal to 15 times 2. 15 times 2 equals 30.

FIRST TO ANSWER CORRECTLY GETS BRAINLIEST

Answers

Answer:

d

Step-by-step explanation:

2*4.5=9

scale1:30

=9*30 =270

Convert to actual scale based on proportion of 1:30

4.5 x 30 = 135 inches

2 x 30 = 60 inches

135 x 60 = 8100 inches^2 though we need this in feet and because we solved for area we need to divide by 12in^2*12in*^2

8100/144 = 56.25 or roughly 56 ft^2

I hope this helps! Let me know if you have any questions. Have a very nice day/night :).

Help please due tomorrow

Answers

Scale factor is 4 for all.

When 2 lines cross, 2 pairs of vertical angles are formed. What is the sum of all 4 angles?

A.
180°
B.
270°
C.
360°
D.
540°

Answers

Answer:

C. 360°

Step-by-step explanation:

Two pairs form a complete angle with a sum of 360°.

The ratio of (blank) to the total is (blank)

Answers

Answer:

4:2 to the total is 6

Step-by-step explanation:

jus like that

power set of MIRACLE​

Answers

Answer:

The Kathryn Kuhlman Miracle Box Set is a captivating collection of 3 truly heart-warming essentials that will rejuvenate your faith; giving you a sense of hope that you may have never felt before. The three wonderful books are titled I Believe in Miracles, Nothing Is Impossible with God and God Can Do It Again. This collection of books allows you to experience the magnificent power of Kathryn's miracle services. Through the power of God Kathryn helped to heal people all over the world in what seemed hopeless situations, inspiring readers to believe that you too can be healed by the almighty power of God.

Which expression has a negative value?
7-31-4/2)
(15-7)-(9:3)
0-517+(-14) ]- 30

Answers

Answer:

the answer is 7+3(-4)(2)

Which of the following statements is false?
If a number is divisible by 8, it must be divisible by 4.
If a number is divisible by both 9 and 10, it is divisible by 90.
The sum of two consecutive odd numbers is always divisible by 4.
If a number is not divisible by both 3 and 4, it is divisible by 12.​

Answers

Answer:

The last one

Step-by-step explanation:

It doesn't make sense for that to be true

Other Questions
if 2x + 8 = 16, what is the vaule of x + 4? Find the smaller of 2 consecutive even integers if the sum of twice the smaller integer and the largerintegers is -16. draw the graph of y = - 5 and Y = 5 on the same graph are the line parallel? find the point of intersection of two lineshelp me in this 11. The rectangle has a width of 8 in, a length of x-5 in, and an area of 16 in. Solve for X.Hint: label the figure.K-5in8in Seven less than four times a number is nine. FIND the number Listen and choose the option that best answers the question.Based on the audio, what can be inferred about Rafael's aunt? She is sick. She is a vegetarian. She owns a business. She prefers meat. 19 yards is the same as how many meters? 5. Original Price: $40 Sale Price: $30 Question 7(Multiple Choice Worth 1 points)(01.03 LC)Escoge la forma correcta del verbo en el subjuntivo. Select the correct form of the verb in the subjunctive.Hoy da, ir al mdico para un chequeo es muy costoso si no tienes un buen seguro que cubra todo. Desafortunadamente, hay muchas personas que no tienen seguro y por eso, no vanal mdico cuando estn enfermos. Es vergonzoso que los servicios mdicos (ser) tan costosos.sonesseasean Which acid-base chemical reaction is irreversible?(1 point)weak acid added to waterstrong acid added to waterwater on its ownweak base added to water smallest to largest. 14/5, 2.4, 2 1/3, 1.41 WHAT IS PREPOSITON ? Give some example ? 31. The mother got angry because --------------. A. her son behaved badly B. her son's bad behavior C. her son will behave badly D. her son bad behaving 32. He lost his job -------------- his laziness. A. due to B. in spite of C. despite D. because 33. She is looking for a new job -------------- she is tired of doing a routine job day after day. A. since B. as C. because D. all are correct34. She was so busy that she couldnt answer the phone.A. Because she was very busy, she couldnt answer the phone.B. Because she was very busy, she could answer the phone. C. Although she was very busy, she couldnt answer the phone. D. Although she was very busy, she could answer the phone. 34. No matter how hard I tried I couldn't open the door.A. Although I tried very hard, I couldn't open the door.B. Although I tried very hard, I could open the door.C. In spite of I tried very hard, I couldn't open the door. D.I couldn't open the door, even though trying very hard.35. She decided to leave her job in the company ------------ she could earn a lot of money there. A. because B. although C. despite D. since36. The children laughed a lot because of the funny story. A. The children laughed because the story is funny. B. The children laughed because of the story funny C. The children laughed because it was funny. D. The children laughed because the story was funny37. Although he took a taxi, Bill still arrived late for the concert. A. Bill arrived late for the concert because he takes a taxi. B. Bill arrived late for the concert because of the taxi. C. In spite of taking a taxi, Bill arrived late for the concert. D. Although Bill took a taxi he cant come to the concert on time.38. The flight was delayed -------------- the fog. A. in spite of B. because of C. though D. since39. Hong didnt participate in the contest -------------- her lack of confidence.A. because B. because of C. since D. despite40. He hid that letter in a draw -------------- no one could read it. A. so that B. because C. although D. in spite of41. -------------- Tom was unable to see anything, he knew someone was in his room. A. Because B. In case C. If D. Even though 42. -------------- other workers constant objection, the director dismissed the worker. A. Because B. Because of C. Although D. In spite of The opposite of -17 I need the answer please and thanks Based on a comparison of the myths The Maori: Genealogies and Origins in New Zealand and The Raven and the First Men: The Beginnings of the Haida, if the Maori and the Haida people decided to create a myth together, what would most likely be the value expressed? human resource is the most significant factor for development. Justify the statement. Which one of the following civilizations did NOT lose all or part of itsterritory to the Arab Empire?*PersianRoman/ByzantineEgyptianChinese your sister is selling girl scout cookies that cost $4.25 a box. your family bought 6 boxes. how many more boxes of cookies must your sister sell in order to $255 They didn't reach an agreement ______ their differences.on account ofduebecauseowing 1.Summarize What happened to former slaves after they were emancipated?