Help me on this please

Help Me On This Please

Answers

Answer 1

Answer:

uhhhh i dont know

Step-by-step explanation:


Related Questions

A certain brand of candies have a mean weight of 0.8616g and a standard deviation of 0.0518 based on the sample of a package containing 447 candies. The package label stated that the net weight is 381.8g If every package has 447 candies the mean weight of the candies must exceed 381.8/447=0.8542 for the net contents to weight at least 381.8g.
a) If 1 candy is reandomly selected, find the probability that it weights more than 0.8542g.
The probability is ________.
(round to four decimal places as needed)
b) If 447 candies are reandomly selected find the probability that their mean weight is at least 0.8542 g.
the probability that a sample of 447 candies will have a mean of 0.8542g or greater is __________.
(round to four decimal places as needed)
c) Given these results does it seem that the candy company is providing consumers with the amount claimed on the label?

Answers

Answer:

a) The probability is 0.5557 = 55.57%.

b) The probability that a sample of 447 candies will have a mean of 0.8542g or greater is 0.9987 = 99.87%.

c) Yes, because there is a very large probability, of 99.87%, that the amount will be at least the one claimed on the label.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean [tex]\mu[/tex] and standard deviation [tex]s = \frac{\sigma}{\sqrt{n}}[/tex].

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean weight of 0.8616g and a standard deviation of 0.0518

This means that [tex]\mu = 0.8616, \sigma = 0.0518[/tex]

a) If 1 candy is reandomly selected, find the probability that it weights more than 0.8542g.

This is 1 subtracted by the pvalue of Z when X = 0.8542. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{0.8542 - 0.8616}{0.0518}[/tex]

[tex]Z = -0.14[/tex]

[tex]Z = -0.14[/tex] has a pvalue of 0.4443

1 - 0.4443 = 0.5557

The probability is 0.5557 = 55.57%.

b) If 447 candies are reandomly selected find the probability that their mean weight is at least 0.8542 g.

Sample of 447 means that [tex]n = 447, s = \frac{0.0518}{\sqrt{447}} = 0.00245[/tex]

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

By the Central Limit Theorem

[tex]Z = \frac{X - \mu}{s}[/tex]

[tex]Z = \frac{0.8542 - 0.8616}{0.0245}[/tex]

[tex]Z = -3.02[/tex]

[tex]Z = -3.02[/tex] has a pvalue of 0.0013

1 - 0.0013 = 0.9987

The probability that a sample of 447 candies will have a mean of 0.8542g or greater is 0.9987 = 99.87%.

c) Given these results does it seem that the candy company is providing consumers with the amount claimed on the label?

Yes, because there is a very large probability, of 99.87%, that the amount will be at least the one claimed on the label.

Please Evaluate this expression...4a-2b for a-5 and b=3

Answers

Answer:

14

Step-by-step explanation:

(4*5)+(2*3)

20-6

14.

What is the absolute value of 8.15

Answers

Answer:

pretty sure its 8.15

Step-by-step explanation:

Kym used the integer tiles to find the sum of (–3)+6.The line showed that the answer is negative 3.Which of the following does Kym need to do to get the correct answer​

Answers

Answer:I need points

Step-by-step explanation:

adsfnsafasfj;ljfdksfas;lfkjdf;lksdfjsdlksfajf

Answer:

remove the zero pairs

so B

Step-by-step explanation:

a circular stained glass window frame with a diameter 20 inches is divided into 8 congruent find the area of 3 of the 8 panes of glass

Answers

Answer:

it would be 45

Step-by-step explanation:

What is the answer to this?

Answers

9514 1404 393

Answer:

  $125 per car

Step-by-step explanation:

The problem statement tells you Jazmin's pay goes up by $125 for each car she sells. That rate of change is $125 per car.

Alexis has a bag of starbursts. After giving half of the candy to her best friend, she ate 6 starbursts.
Now, she only has 10 starbursts left. How many starbursts did Alexis start with?

Answers

Answer: 22

Step-by-step explanation:

The radius of a chord and a tangent line are_ at the point of tangency

Answers

Answer:

fine

cause of it's fine point of tangency

HELPP CAN YOU HELP ME PLZ IF U SOLVE THIS U WILL GET 50+ EXTRA POINTS AND BRAINLIEST HELP

Answers

Answer:

Yes it is a function

Step-by-step explanation:

It is a function because a mapping diagram can be used to represent a relationship between input values and output values. A mapping diagram represents a function if each input value is paired with only one output value.

Brainliest plz?

PLEASEEEEE HELP MEEEEEE

Answers

Answer:

1. VW = 22

2. x = 87

Step-by-step explanation:

Question 1:

SU = 11 (given)

SU = ½(VW) => midsegment theorem

11 = ½(VW) => Substitution

Multiply both sides by 2

2*11 = VW

VW = 22

Question 2:

UV = x + 13

RT = x - 37

RT = ½(UV) => Midsegment Theorem

x - 37 = ½(x + 13) => Substitution

Multiply both sides by 2

2(x - 37) = x + 13

2x - 74 = x + 13

2x - 74 + 74 = x + 13 + 74

2x = x + 87

2x - x = x + 87 - x

x = 87

Someone please help me with this math problem

Answers

Answer: 27,600

Step-by-step explanation:

Ok, there could be two answers to this question. If the question is asking how much he would make if it was .15% more, the total would be 27,600/a year

However, if it's asking .15% of 24,000, your answer would be 3,600 ( as in the extra he would be making)

To find the answer, you would have to multiply 24,000*.15 (your starting value times how much you would like to multiply it by)

Sully is having a party and wants to fill his swimming pool. If he only uses his hose, it takes 3 hours more than if he only uses his neighbor's hose. If he uses both hoses together, the pool fills in 5 hours. How long does it take for each hose to fill the pool (in hr)?

Answers

Answer:

It takes the neighor's hose 3 hours to fill the pool and it takes Sully's hose 6 hours to fill the pool if each filled alone.

Step-by-step explanation:

This is a work problem, and the way these are done is to figure the amount that each can do based on how much can get done in a single hour.  

First thing, in order to have only one variable, we have to put one hose in terms of the other hose.  

We know that it takes the neighbor's hose a certain amount of time (there's our unknown) to fill the pool and that it takes Sully's hose that same time plus 3 hours.

neighbor's hose can get the job done in x time

Sully's hose can get the job done in x + 3 time

Now we will figure out how much each can do in a single hour.

If the neighbor's hose takes x hours to fill the pool, then it can get

of the pool filled in 1 hour.

If Sully's hose takes x + 3 hours to fill the pool, then it can get

of the pool filled in 1 hour.

The sum of these takes 2 hours total and 1/2 of the pool gets filled in 1 hour.

Our equation then is:

This equation states in words:

"the amount of the pool that the neighbor's hose can fill in an hour plus the amount of the pool that Sully's hose can fill in an hour will fill half the pool".

Solving for x will give us that time.

Begin to solve this by finding the LCM of those denominators and getting rid of the fractions by reducing.  The LCM will be 2x(x + 3).  Multiplying each term by that LCD looks like this:

In the first term the x's cancel out, in the second term the (x + 3) cancels out, and in the last term the 2's cancel out leaving us with:

and simplifying gives us:

This is a quadratic that will have to be factored to solve for those values of x.  Combine like terms and get everything on one side to get:

Factor this however you find easiest to get the values:

x = 3 hours and x = -2 hours

We all know that the 2 things in math that will never EVER be negative are times and distances/measures, so we can disregard the -2 and say that

x = 3 hours.  

To answer our question, then;

It takes the neighbor's hose 3 hours to fill the pool; it takes Sully's hose 3+3 hours = 6 hours to fill the pool.

What is the length of the unknown leg in the right triangle?

Answers

Answer:

There is no triangle.

Step-by-step explanation:

Answer:

Your final answer is √32 miles.

Step-by-step explanation:

What is the length of the altitude of the equilateral triangle below?
30
6V3
63
60" 90
60"
Зүз
33
О
А. 81
В. 9
ОО
С. 33
D. 08
ОО
Е. З
о
E. 93

Answers

Answer:

its 63.

Step-by-step explanation:

The length of the altitude of the equilateral triangle is a√3/4 units.

What is a triangle?A triangle is a two - dimensional figure with three sides and three angles.The sum of the angles of the triangle is equal to 180 degrees.∠A + ∠B + ∠C = 180°

Given is to find the length of the altitude of the equilateral triangle.

An equilateral triangle is a triangle whose all sides are equal. All the angles of a given equilateral triangle are 60 degrees.

The length of the altitude of the equilateral triangle can be found out using the Pythagoras theorem.

Draw a median from one vertex on the opposite side to that vertex and apply Pythagoras theorem to one of the right triangle.

We can find the length of the altitude to be -

L = a√3/4

Therefore, the length of the altitude of the equilateral triangle is a√3/4 units.

To solve more questions on triangles, visit the link-

https://brainly.com/question/2773823

#SPJ7

Determine if each set of coordinates form a horizontal or vertical line.
a. (-3, 6) & (-3, 2)
b. (8, 4) & (-3, 4)
c. (11, -5) & (-9, -5)
d. (9, -3) & (9, -12)

Answers

Answer:

a. vertical

b. horizontal

c. horizontal

d. vertical

Step-by-step explanation:

if the x coordinate changes it's horizontal and if the y coordinate changes it's vertical

15% of number is 54. What is 2/3 of that number?​

Answers

9514 1404 393

Answer:

  240

Step-by-step explanation:

The value is proportional to the fraction:

  n/(2/3) = 54/(0.15)

  n = (2/3)(54/0.15) = 240 . . . . . multiply by 2/3

2/3 of the number is 240.

The graph shows the profit, y, of a community fundraiser, with respect to the number
of tickets sold, x

Use the graph to determine the y-intercept and what it represents.

The y-intercept - -700 and represents the initial amount of expenses

The y-intercept - 35 and represents the initial amount of expenses

The y-intercept - 35 and represents the number of tickets sold

The y-intercept = -700 and represents the number of tickets sold

Answers

Answer:

A

Step-by-step explanation:

it rapresent the initial amount of expenses. the ticket sold were 0, but the profit was negative

Answer:

A

Step-by-step explanation:

For what value of m does f( m) = g( m)

Answers

Answer:

Pts

Step-by-step explanation:

Need pts

solve the inequality and specify the answer
1-3x [tex]\leq[/tex]0
Interval notation

Answers

Step-by-step explanation:

hope it helps

see attached

the question is invluded on the picture​

Answers

Answer:

a is the right answer Alexis

Step-by-step explanation:

What is the area of ACDE to the nearest whole number?

Area of ACDE =

Answers

Answer:

Step-by-step explanation:

Area of rectangle ABCD = 84.

BC=x

We can use pythagorean to find x. 12^-6^2=c^2

C=6root3

6root3*6/2 = area of triangle ABC

ABC=18root3

Area of ACDE=84-18root3 which equals about 53

Each side of a square potholder is 21 centimeters long.

What is the area of the potholder?

Answers

The answer is a 441 cm area

An element with mass 800 grams decays by 8.2% per day. How much of the element is remaining after 15 days,
to the nearest 10th of a gram?

Answers

Given:

The initial mass of an element is 800 grams.

Decay rate = 8.2% per day

Number of days = 15

To find:

The remaining element after 15 days.

Solution:

The exponential decay model is

[tex]y=a(1-r)^t[/tex]

Where, a is the initial value r is the rate of interest and t is time period.

Putting [tex]a=800,r=0.082,t=15[/tex] in the above formula, we get

[tex]y=800(1-0.082)^{15}[/tex]

[tex]y=800(0.918)^{15}[/tex]

[tex]y=221.68188[/tex]

[tex]y\approx 221.7[/tex]

Therefore, the mass of the remaining element is 221.7 grams.

the expression (x - 0.35x) represents 35% off the cost of an item x. how is this equivalent to multiplying x by 0.65?
show full work for brainliest

Answers

Answer:

Step-by-step explanation:

x-0.35x = x(1-0.35) = x(0.65)

The exterior angles of a pentagon have measures of 65 degree 86degree 104 degree 2x and 3x find the value of x

Answers

Answer:

21

Step-by-step explanation:

65+86+104+2x+3x = 360

5x = 360-65-86-104

= 105

x =21

Explain how to find the area of the composite figure above in your explanation be sure to include the formulas you will need to solve the problem

Answers

9514 1404 393

Answer:

  40.5 square inches

Step-by-step explanation:

The figure appears to be a trapezoid with bases 15 inches and 12 inches, and a height of 3 inches. The formula for the area of a trapezoid is useful in this case:

  A = 1/2(b1 +b2)h

  A = (1/2)(15 in +12 in)(3 in) = (1/2)(27 in)(3 in) = 40.5 in²

The area of the composite figure is 40.5 square inches.

__

Additional comment

You get the same answer if you divide the figure into a rectangle and a triangle. The rectangle is 3 in high by 12 in long, so has an area of ...

  A = bh = (12 in)(3 h) = 36 in²

The triangle has a base of (15 -12) = 3 in, and a height of 3 in. It has an area of ...

  A = 1/2bh = 1/2(3 in)(3 in) = 4.5 in²

Then the total area is the sum of the rectangle and triangle areas:

  figure area = 36 in² +4.5 in² = 40.5 in²

The ideal output of a particular oil-rig in the Mexican Gulf is at least 2000 barrels per day. If the output is lesser than that, the foreman raises an red flag at the end of the day. Old Joe the Retired Statistician watches from the shore every day. After 28 days, the red flag was raised on 16 of those days. Could Joe conclude that the oil-rig is operating at a non-ideal condition most of the time

Answers

Answer:

Mexican Gulf Output of a Oil-Rig

Based on 57% red flag days, Joe, the retired statistician, who watches from the shore for the red flag every day, cannot conclude that the oil-rig is operating at a non-ideal condition most of the time, but more of the time.

Step-by-step explanation:

Ideal output of a particular oil-rig, at least = 2,000 barrels per day

When output is lesser than 2,000, a red flag is raised by the foreman

Number of days counted = 28

Number of days when red flag was raised = 16

Proportion of days when the red flag was raised = 16/28

= 0.57

or 57%

What is the fewest number of quarters, nickels, and pennies that can be fairly exchanged for 2 quarters, 6 nickels, and 9 pennies?

Answers

Answer:

Your answer is 3 quarters, 2 nickels, and 4 pennies

Step-by-step explanation:

2 quarters plus 6 nickels plus 9 pennies is equal to 89 cents. So if we subtract 75(3 quarters) we get 14 which is less than 25 therefore we must only use nickels and pennies from now on. If we take 14 and subtract 10(2 nickels) we get 4 which less than 5 leaving us only to use pennies, which one a piece so it must be 4 pennies. Hope this helps!

This table shows how the amount Mary earns from yard work depends on the number of hours she works. Time spent (hours), x 3 4 Amount earned, y $24 $32 How much money does Mary earn per hour? $ per hour​

Answers

she earns 8 dollars per hour

Si una mujer tiene en su closet 7 camisas,3 pares de zapatos y 4 pantalones ¿de cuántas formas se puede vestir?

Answers

Answer:

14 veces  Step-by-step explanation:

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