pleaseee helppppppp!!

Answer:

Chaeyoung!!!!

Step-by-step explanation:

I love Twice!!!

Answer:50

Step-by-step explanation:

Answer:

C. 2

Step-by-step explanation:

Cancel log from both sides,

2t + 4 = 14 - 3t

5t = 10

t = 2

Answer:

[tex]W = 13.29^\circ[/tex]

Step-by-step explanation:

Given

[tex]\sin(W) = 0.23[/tex]

Required

Find W

Take arc sin of both sides

[tex]W = \sin^{-1}(0.23)[/tex]

Using a calculator

[tex]W = 13.29^\circ[/tex]

X goes left and right. Y goes up and down. Hope this help:)

This question is incomplete, the complete question is;

Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and preview ads before the movie starts. Many complain that the time devoted to previews is too long (The Wall Street Journal, October 12, 2012). A preliminary sample conducted by The Wall Street Journal showed that the standard deviation of the amount of time devoted to previews was 4 minutes. Use that as a planning value for the standard deviation in answering the following questions. Round your answer to next whole number,

a) If we want to estimate the population mean time for previews at movie theaters with a margin of error of 75 seconds, what sample size should be used? Assume 95% confidence.

b) If we want to estimate the population mean time for previews at movie theaters with a margin of error of 1 minute, what sample size should be used? Assume 95% confidence.

Answer:

a) the required Sample Size is 40

b) the required Sample Size is 62

Step-by-step explanation:

Given the data in the question;

standard deviation σ = 4 minutes

a)

margin of error E = 75 seconds = ( 75 / 60 )minutes = 1.25 minutes

And 95% confidence.

Now, Critical Value of z for 0.95 confidence interval;

∝ = 1 - 0.95 = 0.05

[tex]Z_{\alpha /2[/tex] = 1.96

so, sample size n will be;

n = [ [tex]Z_{\alpha /2[/tex] × σ/E ]²

we substitute;

n = [ 1.96 × (4/1.25) ]²

n =  [ 1.96 × 3.2 ]²

n = [ 6.272 ]²

n = 39.338

Since we referring to a number of sample, its approximately becomes 40

Therefore, the required Sample Size is 40

b)

margin of error E = 1 minutes

And 95% confidence.

Now, Critical Value of z for 0.95 confidence interval;

∝ = 1 - 0.95 = 0.05

[tex]Z_{\alpha /2[/tex] = 1.96

so, sample size n will be;

n = [ [tex]Z_{\alpha /2[/tex] × σ/E ]²

we substitute;

n = [ 1.96 × (4/1) ]²

n =  [ 1.96 × 4 ]²

n = [ 7.84 ]²

n = 61.466

Since we referring to a number of sample, its approximately becomes 62

Therefore, the required Sample Size is 62

Answer:

Circumference of given circle = 154 cm² (Approx.)

Step-by-step explanation:

In given diagram:

Diameter of given radius = 49 cm

Value of π = 3.14

Find:

Circumference of given circle

Computation:

Radius of given circle = Diameter of given radius / 2

Radius of given circle = 49 / 2

Circumference of given circle = 2πr

Circumference of given circle = 2(3.14)(49/2)

Circumference of given circle = (6.28)(49/2)

Circumference of given circle = 153.86

Circumference of given circle = 154 cm² (Approx.)

Answer:

It may be A. or C.

Step-by-step explanation:

A. 5 = 20 4 = 16  4 = 16 20 + 16 = 36 + 16 = 52

B.  3 = 12 3 = 12 7 = 27 + 12 = 39 + 12 = 51

i uhhh don't know this is confusing

im very sorry if im incorrect

Answer:

not c

sorry its not exact

Answer:

0.86

Step-by-step explanation:

Alpha level in study ( ∝ )= 0.05

In the field ( r  )  = 0.35

power of study = 0.9

Determine the Probability of been real

  1 - 0.14  

= 1 - 0.14 = 0.86

The opposite of a probability been real is the Probability of been unreal

Answer:

See Image below:)

Step-by-step explanation:

You can use the app photo math, you just take a picture of the question and it shows you the steps.

Answer:

Your answer is correct; 2:1

Step-by-step explanation:

Answer:

C(0,6)

Step-by-step explanation:

1) find the length of the base of the triangle

AB = 7-3 = 4

2) find the the height of the triangle

A = (base x height)/2

A x 2 = base x height

height = (A x 2)/base

height = (12 x 2)/4 = 6

3) find the equation of the line that passes threw the points AB

the two points have the same y so the equation of the line is

y = 0

4) use the formula of the distance between a point and a line to find C

|ax+by+c|/√a^2 + b^2 = distance

x = 0  

y = 6

C (0,6)

Answer:

It should be 48+n=56.5

Step-by-step explanation:

Answer:  Choice B

48 + n = 56.5

============================================================

Work Shown:

48 = height last year, in inches

n = number of inches she grew last year

48+n = current height right now, in inches

48+n = 56.5 since her current height is 56.5 inches

Side notes:

Step-by-step explanation:

......................

Answer:

5/2 and -5/2

sry i late

Answer:

6.05

Step-by-step explanation:

12 and a half percent of 48.4 = 6.05 because you can put .125 in your calculator and it is the same at 12.5% so you do .125 * 48.40 and you get 6.05

Answer: 6

Step-by-step explanation: Division use a calculator 12/2

Answer:

6

Step-by-step explanation:

From question:

Dan has put his coins into 2 stacks

2 stacks in total

Each stack has the same number of coins

Number of coins in stack 1 = number of coins in stack 2

x = x

There are 12 coins total

Total number of coins in 2 stacks = 12

2x = 12

x = 6

There are six coins in one stack.

Answer:

120

Step-by-step explanation:

2x plus 3x/4 + x =18

add like terms

well first i mutliplied both sides by 4 to get it out of the way

and then i added the x's

so now its 2x+3x+x=180

now its 6x=`180

180/6=120

x=120

Answer:

The total charges for the two checking accounts will be the same after 6 checks written.

Step-by-step explanation:

Since I want to open a checking account at my local bank which offers two options, a standard checking account that charges $ 6 each month plus $ 0.25 for each check written, and a select checking account that charges $ 4.50 each month plus $ 0.50 for each check written, to determine which system of equations can be used to determine the number X of checks that must be written in a month in order for the total charges Y for the two checking accounts to be the same, the following calculation must be performed:

6 + 0.25X = Y

4.5 + 0.5X = Y

6 + 0.25x5 = Y

4.5 + 0.5x5 = Y

6 + 1.25 = Y = 7.25

4.5 + 2.50 = 7

6 + 0.25x6 = Y

4.5 + 0.5x6 = Y

6 + 1.50 = Y = 7.50

4.5 + 3 = 7.50

Therefore, the total charges for the two checking accounts will be the same after 6 checks written.

Answer:

320 kilometers

Step-by-step explanation:

1/2 -- (60 * 2) = 120 km

rest pf the trip -- 100 km per hour -- 2 hours left -- (100 * 2) = 200 km

Therefore, 120 + 200 = 320 km

Thenks and mark me brainliest :)

Answer:

my answer would be c. y=lX+7l

Answer: 43/75 chance

Step-by-step explanation:

total number of coins:

15 + 28 + 12 + 20 = 75

total number of coins that arent quarters or dimes:

15 + 28 = 43

so the probability would be 43/75, which is not simplifiable

Answer:    

.

Step-by-step explanation:

Answer:

The maximum length of the opposite side of a right triangle equals the length of the hypotenuse.

Step-by-step explanation:

Answer:  The maximum possible value of a sine ratio would be 1. This is because the sine of an angle in a right triangle is defined as the ratio of the opposite side to the hypotenuse, and the hypotenuse is the longest side in any right triangle. So, the ratio can never be greater than one.

HOPE THIS HELPS

Answer:

52

Step-by-step explanation:

34-56/93

390 + 86(90x89)

DONT LISTEN TO THIS

Answer:

[tex]\frac{1}{12}[/tex] more sandwich

Step-by-step explanation:

Very simple. Just subtract the amount Emma ate from the amount John ate.

[tex]\frac{4}{12} - \frac{3}{12} = \frac{1}{12}[/tex]

Hope this answer helped! :)

Answer:

John ate [tex]\frac{1}{12}[/tex] of a sandwich more than Emma.

Step-by-step explanation:

In order to find out how much more sandwich did John eat than Emma we just need to find the difference between the amounts that they ate, and so we get...

[tex]\frac{4}{12} - \frac{3}{12} = \frac{1}{12}[/tex]

Therefore John ate [tex]\frac{1}{12}[/tex] of a sandwich more than Emma.

Answer:

False

Step-by-step explanation:

V = 3.14 x r^2 h = 3.14 x 7^2 x 4 = 615.75216

Answer:

[tex] \frac{5}{24} [/tex]

Step-by-step explanation:

Given:

[tex] \frac{7}{8} - \frac{2}{3} [/tex]

Required:

Difference of the fractions in simplified form

Solution:

[tex] \frac{7}{8} - \frac{2}{3} [/tex]

The common denominator of both fractions is 24

Therefore:

[tex] \frac{3*7 - 8*2}{24} [/tex]

[tex] \frac{21 - 16}{24} [/tex]

[tex] \frac{5}{24} [/tex]

Answer:

18

Step-by-step explanation: