Helppppp
A coin is weighted so that the probability of getting heads is Suppose you toss this coin 15 times. Let X
represent the number of heads. What are the mean and standard deviation of X?
= 0.67.00.88
H-7.50 -2.33
H-7.50 -3.23
10, 1.83

Answers

Answer 1

Answer:

C) 10, 1.83

Step-by-step explanation:

Answer 2

Answer:

should be D) = 10, = 1.83

Step-by-step explanation:

guessed it right, edge 23


Related Questions

Jeremy will roll a number cube, numbered 1–6, twice. What is the probability of rolling an odd number, then a number bigger than 2?

Answers

Answer:

1/12

Step-by-step explanation:

The probability of rolling an odd number = 3/6

The probability of rolling 2 after an odd number =

1/6

3/6 x 1/6 = 3/36

3/36 = 1/12 (after simplified)

Point B, located at (-4,-7), is reflected over the y-axis. What are the coordinates of B?

A. (-4, 7)
B. (4, -7)
C. (4, 7)
D. (-4, -7)​

Answers

Answer:

A

Step-by-step explanation:

CAN SOMEONE PLZ ANSWER THIS ITS DUE AT 11:59 APRIL 11 2021 AND ILL MARK U BRAINLIST

Answers

Answer:

answer is c

Step-by-step explanation:

Answer:

c. 586.2

Step-by-step explanation:

add all areas together:

127.2 for semi circle on right

22x18=396 for middle square

7*9=36 for 2 triangles on left

The students in a typing class have a mean typing rate of 38.2 words per minute. Five randomly selected students have typing rates of 32, 28, 41, 38, and 45 words per minute.

What is the value of μ and x¯ ?


μ = 38.2 wpm, x¯ = 38.0 wpm


μ = 36.8 wpm, x¯ = 38.2 wpm


μ = 38.2 wpm, x¯ = 36.8 wpm


μ = 38.0 wpm, x¯ = 38.2 wpm

Answers

Answer:

µ = 38.2 wpm, = 36.8 wpm

9.3+b=−42 , you would subtract 9.3 to isolate the variable.

Answers

Answer:

yeh you are correct so it will be b is equal to minus 42 minus 9.3 that will be equal to -51.3 so that is the value of b

Pls help! And I will mark you as brainlist im not joking!

Answers

Answer:

[tex]third \: answer \\ if \: f(x) < 0 \\ - 6 < x < 2[/tex]

Find all complex solutions of the equation z⁴-1-i=0.​

Answers

Answer:

Step-by-step explanation:

hello :

z⁴=1+i      given : z² = t    t is the complex number  so :   z⁴= (z²)² =t²

solve for  t  this equation : t² = 1+i

if : t = x+iy     t² =(x+iy)² = x²+2xiy+(iy)² =x²-y²+2xyi ......     (  i² = -1)

t² = 1+i  means : x²-y²+2xyi = 1+i

you have this system :   x²-y² = 1.....(*)

                                      2xy  = 1.....(**)

slve for   x  and y    you ca add this equation :   ....(***)

( use : t² = 1+i

/t²/ = /1+i/   so :/t/² = /1+i/ .... (√(x²+y²))²=√(1²+1²) =√2  means x²+y² = √2)

the system is :   x²-y² = 1.....(*)

                         2xy  = 1.....(**)

                         x²+y² = √2 ....(***)

add (*) and (***) : 2x²= 1+√2

x² = (√2+1)/2

substrac  (*) and (***)  you have : y² = (√2-1)/2

use (**) the proudect  xy is positif (same sign)  so :

x=√( (√2+1)/2)  and  y = √( (√2-1)/2)   so :  t1 =√( (√2+1)/2)+i√( (√2-1)/2)  

x= -√( (√2+1)/2)  and  y = -√( (√2-1)/2) so :t2= -t1

same method for equation : z² =t1  ..(2 solution )  and z² = t2..(2 solution )

f(x) = 3x + 5 g(x) = 4x2 – 2 h(x) = x2 – 3x + 1 Find f(x) – g(x) – h(x)​

Answers

Step-by-step explanation:

this is the answer

hope it helped!!!

The price of one gallion of heating oil $2.589. Which is this number rounded to the nearest penny A $2.50 a $2.59 c $2.70 $3.00​

Answers

$2.59 would be the correct rounding because you look at the 8 and the number next to it is 9 so the 8 goes up to nine since it’s larger than 5

යය _|5
1/2 45
How to solve trinomial

Answers

Answer:

Identify a, b , and c in the trinomial ax2+bx+c.

Write down all factor pairs of c.

Identify which factor pair from the previous step sum up to b.

Substitute factor pairs into two binomials.

Step-by-step explanation:

ZABD and ZDBC are supplementary angles.
What is the measure of x?
x = [?]°
110%
AS
>C
B
Angles are not drawn to scale.
Enter

Answers

Answer:

x=70°

Step-by-step explanation:

x+110=180 linear pair

x=180-110=70

Answer:

Solution given:

x+110°=180[supplementary]

x=180-110=70°

x=70°

Find the GCF of the terms of the polynomial

Answers

Answer:

7z³

Step-by-step explanation:

7z³

[tex]\huge\boxed{Hi\:there!}[/tex]

To find the GCF of the polynomial, all we have to do is spot the common factor of all the terms of the polynomial.

21z⁵-42x⁴+14z³

The common term is

7z³

If we factor 7z³ out, we'll get

z³(3z²-6z+2)

[tex]\huge\boxed{\sf{Hope\:this\:helps!}}\\[/tex]

[tex]\huge\bold{Good\:luck!}[/tex]

[tex]\huge\mathfrak{LoveLastsAllEternity}[/tex]

Shelly invested in a lifetime annuity that begins payments at age 65. Her life
expectancy is 88. Shelly invested $800,000 into the annuity, which earns 4.8%
APR, compounded monthly. With this annuity, what is Shelly's monthly
payment amount?
A. $4756.93
B. $4792.38
C. $4984.72
D. $4897.79

Answers

Answer: 4792.38

Step-by-step explanation: just did it

Can someone plz help me with my question I will pAaay you

Answers

Answer:

sure what is it

Step-by-step explanation:

Well, it depends on the question!!

(comment it if you need me to answer it)

What is the value of k?
k = 28
k = 29
k = 31
k = 42

Answers

Answer:

k=29

Step-by-step explanation:

we know that

-------> by supplementary angles

Solve for k

Combine like terms in the left side

Substract  both sides

Divide by  both sides

   

therefore

the answer is the option

B

 

The answer is 29
K is equal to 29

Solve the following system of inequalities graphically on the set of axes below. State
the coordinates of a point in the solution set.
y > -2x - 1
y > x + 2

Answers

Answer:

[tex](x,y) = (-1,1)[/tex]

Step-by-step explanation:

Given

[tex]y>-2x - 1[/tex]

[tex]y>x + 2[/tex]

Required

Solve graphically

See attachment for graph;

The black shade represents [tex]y>-2x - 1[/tex]

While the green, represents [tex]y>x + 2[/tex]

Next, determine the intersection points between the two lines

From the attached graph, we have:

[tex](x,y) = (-1,1)[/tex]

Hence, the solution is:[tex](-1,1)[/tex]

Please help me with this answer
Thank you!

Answers

18 percent you welcome

The local theater has three types of seats for Broadway plays: main floor, balcony, and mezzanine. Main floor tickets are $48, balcony tickets are $45, and mezzanine tickets are $34. One particular night, sales totaled $65,140. There were 381 more main floor tickets sold than balcony and mezzanine tickets combined. The number of balcony tickets sold is 328 more than 2 times the number of mezzanine tickets sold. How many of each type of ticket were sold?
I already have these equations: 48x+45y+34z=65140, x=y+z+381, y=2x+328, but I can't figure out how to substitute them.

Answers

Answer: In this problem, you have three unknowns: broadway tickets for the (1) main floor, (2) balcony and (3) mezzanine. To solve algebraic equations, the total number of unknowns must be the same with the number of independent equations. With that, let's formulate these three equations.

Let the 3 unknowns be

x = number of tickets for the main floor

y = number of tickets for the balcony

z = number of tickets for the mezzanine

The independent equations are:

59x+50y+40z=73,785 --> eq 1

x = y+z+435 --> eq 2

y = 78 + 33 z ---> eq 3

Solve the equations simultaneously. Substitute eq3 to eq 2

x = 78+33z+z+435

x = 513+34z --> eq 4

Substitute eq 4 and eq 3 to eq 1

59(513+34z)+50( 78 + 33 z)+40z=73,785

Solve for z using the calculator: z = 11

Use eq 4 to find x: x = 877

Use eq 2 to find y: y = 432

There were 877 main floor tickets, 432 balcony tickets and 11 mezzanine tickets sold.

Step-by-step explanation:

Answer:

Main floor - 892, balcony - 450, mezzanine- 61

Step-by-step explanation:

Main floor - x, balcony - y, mezzanine- z

Equations:

48x + 45y + 34z = 65140            ↔ (1)x = 381 + y + z                              ↔ (2)y = 2z + 328                                 ↔ (3)

Substitute (3) into (2):

x = 381 + 2z + 328 + z  ⇒ x = 3z + 709                                 ↔ (4)

Substitute (2) and (4) into (1) and solve for z:

48(3z + 709) + 45(2z + 328) + 34z = 65140144z + 48*709 + 90z + 45*328 + 34z = 65140268z + 34032 + 14760 = 65140268z = 65140 - 48792268z = 16348z = 16348/268z = 61

Find x and y:

x = 3z + 709 = 3*61 + 709 = 892y = 2z + 328 = 2*61 + 328 = 450

What is another way to describe the following expression?
5−(x+y)3

Answers

Answer:

How can I help you?

5−(x+y)35-(x+y)3

Simplify

Simplify the expression.

−3x−3y+5-3x-3y+5

Answer:

the difference of 5 and the cube of the sum of x and y

Factor out the greatest common factor

Answers

3x(5x-7) is the answer

can someone pls help me

Answers

Answer:

B. 7

Step-by-step explanation:

AB is a tangent to circle o

ABO is a right-angled

AO²=AB²+BO²

[tex]BO=\sqrt{AO^{2}-(AB)^{2})\\}\\\\\sqrt{(8.6)^{2}-(5)^{2} } \\\\=\sqrt{73.96-25} \\\\=\sqrt{48.9} \\\\=6.99\\\\Answer=7[/tex]

hope it helps....

have a great day :)

Can somebody help me

Answers

Answer:

the answer is D because it depends of the velocity

what's a 3 number multiplication that = 1000?

Answers

Answer:

1,1, and 1000

Step-by-step explanation:

Answer:

(10 x 10) x 10 = 1000

Step-by-step explanation:

10 x 10 = 100

100 x 10 = 1000

GIVING BRAINIEST to who ever answers hurry

Answers

Answer:

x=10

Step-by-step explanation:

50+x=6x

-x -x

50=5x

/5 /5

x=10

y^4-2y^2+1...........

Answers

Answer:

(y²-1)²

Step-by-step explanation:

Given:

y⁴ - 2y² + 1

Find:

Factor of given equation

Computation:

y⁴ - 2y² + 1

Change given equation in quadratic equation.

(y²)² - 2(y)²(1) + (-1)²

We know that

(a)² - 2(a)(b) + (b)²

(a-b)²

So,

(y²)² - 2(y)²(1) + (-1)²

(y²-1)²

The frequency table represents the job status of a number of high school students. A 4-column table with 3 rows titled job status. The first column has no label with entries currently employed, not currently employed, total. The second column is labeled looking for job with entries 12, 38, 50. The third column is labeled not looking for a job with entries 28, 72, 100. The fourth column is labeled total with entries 40, 110, 150. Which shows the conditional relative frequency table by column? A 4-column table with 3 rows titled job status. The first column has no label with entries currently employed, not currently employed, total. The second column is labeled looking for a job with entries 0.3, nearly equal to 0.33, 1.0. The third column is labeled not looking for job with entries 0.7, nearly equal to 0.65, 1.0. the fourth column is labeled total with entries nearly equal to 0.27, nearly equal to 0.73, 1.0. A 4-column table with 3 rows titled job status. The first column is blank with entries currently employed, not currently employed, total. The second column is labeled Looking for a job with entries 0.12, 0.38, 050. The third column is labeled not looking for a job with entries 0.28, 0.72, 1.00. The fourth column is labeled total with entries 0.4, 1.1, 1.5. A 4-column table with 3 rows titled job status. The first column has no label with entries currently employed, not currently employed, total. The second column is labeled looking for a job with entries 0.24, 0.76, 1.0. The third column is labeled not looking for a job with entries 0.28, 0.72, 1.0. The fourth column is labeled total with entries nearly equal to 0.27, nearly equal to 0.73, 1.0. A 4-column table with 3 rows titled job status. The first column has no label with entries currently employed, not currently employed, total. The second column is labeled looking for job with entries 0.08, nearly equal to 0.25, nearly equal to 0.33. The third column is labeled not looking for a job with entries nearly equal to 0.19, 0.48, nearly equal to 0.67. The f

Answers

Answer:

C on edge

hope this helps

Step-by-step explanation:

The answer was C for me on Edg.

A farm is sold for €457 000, which gives a profit of 19%. Find the profit​

Answers

Answer:

103453.17

Step-by-step explanation:

19% of 457,000 is 86,830 euros and use conversion rate to get a profit of 103453.17

What is the area of the figure show
• below?
-30 ft-
15 ft
- f
1551
A 315 f12
B 225 fra
C 180 ft2
D 90 fre?

Answers

Answer:

315 ft²

Step-by-step explanation:

•Split the shape into a triangle and a square.

•A=bh so 15*15=225 (area of square)

•Since the height of the square is 15, subtract given height of 3 from 15 which is 12 and that is the base of triangle.

• To find the height, subtract 15 since the base is equal to the top side.

•A=1/2bh for triangles so 1/2(15)(12) is 90.

•Add 225 and 90 then boom. 315ft²

The volume of the polyhedron is ______ cm3.

Answers

Answer:

Volume = 144 cm³

Step-by-step explanation:

Volume of the polyhedron = volume of triangular prism = ½*b*h*l

Where,

b = 4 cm

h = 6 cm

l = 12 cm

Substitute

Volume = ½*4*6*12

Volume = 144 cm³

Use △GHJ, where A, B, and C are midpoints of the sides. When AC = 3y−5 and HJ = 4y+2, what is HB?

Answers

The answer for the question is

Use △GHJ, where A, B, and C are midpoints of the sides

HB=14

Given :

Use △GHJ, where A, B, and C are midpoints of the sides

AC = 3y−5 and HJ = 4y+2

Apply mid point theorem

mid segment = half of base

[tex]AC=\frac{1}{2}(HJ)[/tex]

Now we replace AC and HJ

[tex]AC=\frac{1}{2}(HJ)\\3y-5=\frac{1}{2} (4y+2)\\3y-5=2y+1\\Subtract \; 2y\\1y-5=1\\Add \; 5\\1y=1+5\\y=6[/tex]

B is the midpoint . HB is half of HJ

[tex]HB=\frac{1}{2} HJ\\HB=\frac{1}{2}(4y+2)\\x=6\\HB=\frac{1}{2}(4(6)+2)\\\\HB=\frac{1}{2}(28)\\\\HB=14[/tex]

So the value of HB = 14

Learn more : brainly.com/question/23120373

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