A delivery service claims that orders arrive before noon 90% of the time. If Amy uses the delivery service 20 times, how many times can she predict the deliveries will arrive before noon? Is the claim accurate if her packages arrive after noon 4 times?

Answers

Answer 1

Answer:

They claim that 90% of the times, the orders arrive in time.

Then, out of N orders, (90%/100%)*N of them will arrive in time.

Here we have that N = 20

then the number that arrives in time is:

(90%/100%)*20 = 18

Now, experimetally we see that 4 times her packages arrived after noon (so 16 times the packages arrived in time), so we can calculate the experimental percentage as:

(X/100%)*20 = 16

X = (16/20)*100% = 80%

so the percentages doesn't match, so it the claim is not really accurate, but this is a small sample, so if the number of times that she uses the delivery increases, we may see that the experimental percentage gets closer to the claimed percentage.


Related Questions

Select a setting so that each given point will lie within the viewing window.
(-13,3), (0,0).(-2,-7)

Answers

Answer:

The given points are

[tex](-13,3)\\(0,0)\\(-2,-7)[/tex]

The setting would have a interval or 2 units above and below the minimum and maximum of each coordinate.

The given maxium horizontal coordinate is 0.

The given minimum horizontal coordinate is -13.

The given maximum vertical coordinate is 3.

The given minimum vertical coordinate is -7.

Now, we extend each maximum and minimum value by 2 units to create the setting.

So, the setting is

[tex]x_{min}=-15\\x_{max}=2\\ y_{min}=-9\\y_{max}=5[/tex]

With a scale of 2 units.

What is the arc length of cd

Answers

Answer:

6.10865

Step-by-step explanation:

S = r * Θ (in radians)

Θ = 50

50 * pi/180 = [tex]\frac{5}{18} \pi[/tex] or 0.87266

S = 7 * 0.87266

S = 6.10865

Which of the following represents “two times the sum of a number and fifteen is esqueleto to six times the number”?

Answers

Answer:

2(n + 15) = 6n

Step-by-step explanation:

A company is worth $79,600,000. Write this number in scientific notation.

79,600,000=

Answers

Answer:

The answer is 7.96×10⁷ .

Step-by-step explanation:

As the decimal moves to the left , you have to add one more power to the base 10 :

e.g

7 960 000.0 = 7 960 000×10¹

796 000.00 = 796 000×10²

79 600.000 = 79 600×10³

7 960.0000 = 7 960×10⁴

796.00000 = 796×10⁵

79.600000 = 79.6×10⁶

7.9600000 = 7.96×10⁷

* Take note :

[tex]a \times {10}^{n} [/tex]

0 < a < 10 ('a' must be greater than 0 but smaller than 10)

There are 17 trees along the road from Basil's home to a swimming pool. On his way way to and from a swim Basil marks some trees with a red stripe. On his way to the pool he marks the first, the third, the fifth tree and so on. On his way back again, he marks the first tree he comes to, the fourth tree, the seventh tree and so on, missing out two trees each time. By the time he gets home how many trees have no mark?

Answers

Answer:

Number of trees not marked is 6

Step-by-step explanation:

Base on the scenario been described in the question, we can find the solution in the file attached

Quadrilateral B E A R BEARB, E, A, R is inscribed in circle O OO. What is the measure of ∠ R ∠Rangle, R? ∘ ∘ degrees O O A A E E B B R R 7 4 ∘ 74 ∘ 9 2 ∘ 92 ∘

Answers

Answer:106

Step-by-step explanation:

CAN ANYBODY GIVE A QUICK ANSWER

Answers

Answer:

It is C

Step-by-step explanation:

Find the retail sale price of each item below. Round to two decimal places when necessary. Original price : $325.50; Markdown: 15%.

Answers

Answer:

Step-by-step explanation:

Answer:

Find the retail sale price of each item below. Round to two decimal places when necessary. Original price : $325.50; Markdown: 15%.

help me for brainetest

Answers

Answer:

1 and 1/6

Step-by-step explanation:

if you simplify 6/6 is equal to 1 and the extra 1/6 is the fraction so the answer is 1 and 1/6

plz give me brainiest

The right answer is 1 1/6

look at the attached picture

hope it helps..

Good luck on your assignment

Tom has to take three medicines each day. One is to be taken
every 3 hours, one every 4 hours and one just four times a day.
He takes his first dose on Monday at 9am, what is the next time he
takes all three medicines together?

Please help​

Answers

Answer:

9pm Monday

Step-by-step explanation:

It would take 12 hours, that would be when all of the medicines would be taken at the same time, because 3/4/6 are factors of 12

Answer:

Monday at 9pm

Step-by-step explanation:

The first drug is by every 9,12,3,and 6.The second drug is by every 9,1,and 5.While the third drug is by every 9 and 3.

Therefore, 9 is common so the next time the drugs will be taken at the same time is by 9pm.

Liza comes to the swimming pool once every 6 days. Jenny comes once every 4 days and Olga comes once every 10 days. This Monday all of them were in the pool. How many days after this Monday will all of them meet at the swimming pool again?

Answers

Answer:

  60 days

Step-by-step explanation:

The least common multiple of 6, 4, and 10 is the product of the unique factors ...

  6 = 2·3

  4 = 2²

  10 = 2·5

The LCM is 2²·3·5 = 60.

All of them will meet at the swimming pool again in 60 days.

Answer:

60

Step-by-step explanation:

Which functions have the same rate of change?
y=0.3x-6
y=3x-8
y=0.3x+4
y=0.03x+1

1:A and D
2:B and C
3:A and C
4:C and D

Answers

Answer:

Option 3

Step-by-step explanation:

All equations are in slope-intercept form. [tex]y=mx+b[/tex]

The 'm' is the slope.

The 'b' is the y-intercept.

The slope is also known as the rate of change. So, we would have to look at what replaces 'm' and select two equations that have the same rate of change.

Let's look over the equations:

Equation A:

[tex]y=0.3x-6[/tex]

In this equation, 0.3 replaces 'm', so the rate of change for this equation is 0.3.

Equation B:

[tex]y=3x-8[/tex]

In this equation, 3 replaces 'm', so the rate of change for this equation is 3.

Equation C:[tex]y=0.3x+4[/tex]

In this equation, 0.3 replaces 'm', so the rate of change for this equation is 0.3.

Equation D:[tex]y=0.03x+1[/tex]

In this equation, 0.03 replaces 'm', so the rate of change for this equation is 0.03.

Equation C and equation A have 0.3 as the slope. Since the question asks for two equations that have the same rate of change, the answer would be Equations A and C, or Option 3.

What is(1*26)+(1*25)+(1*24)+(1*23)+(1*22)+(1*21)(+1*20)

Answers

Answer:

161

Step-by-step explanation:

if you add up all those numbers thats what they equal because 1x anything equals itself

Answer:

161

Step-by-step explanation:

:<

Rewrite the following equation in slope-intercept form.

9x + 11y = 7


Write your answer using integers, proper fractions, and improper fractions in simplest form.

Answers

11y=7-9x. y=(-9/11)x+(7/11)

Answer:

y=-(9/11)x+7/11

Step-by-step explanation:

write the equation in form y=mx+c. where m is the gradient

decimals from least to greatest please help put in order. 2.2, 2.15, 2.2012, 2.501

Answers

Answer: 2.15, 2.2, 2.2012, 2.501

Answer:

the answer is 2.15, 2.2, 2.2012, 2.501.

Step-by-step explanation:

A drawer contain pens , 14 blue pens and 8 black pens , 14 silver paper clips , and 16 white paper clips . If you randomly select a pen and paper clip from the drawer , what is the probability that you select a red pen and white paper clip

Answers

Step-by-step explanation:

Total pens = 22

Total clips = 30

Probability of red pen = 0

Because there are no red pens

Probability of white clip = 16/30 = 8/15

Describe how factoring a quadratic expression ax^2 + bx + c, where a ≠ 1, is different from factoring x^2 + bx + c.

Will give Brainliest to whoever has the best answer!

Answers

Answer:

18bx

Step-by-step explanation:

2+bx * 2 and then divided by 1

Answer: 1. Dividing the expressions ax^2+bx+c by a is a different step.

Step-by-step explanation: Mark me as brainliest

PLEASE HELP ME use long division to find the quotient

Answers

Answer:

[tex]8x^2 + 18x + 36[/tex]

Step-by-step explanation:

I did it on paper.

Answer:

A.) 8x^2 + 18x  + 36

Step-by-step explanation:

Use these steps to see how exactly I arrived at my answer!

[tex]=8x^3+2x^2-72\\=2\cdot \:4x^3+2x^2-2\cdot \:36\\=2\left(4x^3+x^2-36\right)\\[/tex]

[tex]=4x^3+x^2-36\\=\left(x-2\right)\frac{4x^3+x^2-36}{x-2}\\=4x^2+\frac{9x^2-36}{x-2}\\=4x^2+9x+\frac{18x-36}{x-2}\\=4x^2+9x+18[/tex]

[tex]=2\left(x-2\right)\left(4x^2+9x+18\right)\\=\frac{2\left(x-2\right)\left(4x^2+9x+18\right)}{x-2}[/tex]

Between these steps, I canceled out a common factor!

[tex]=2\left(4x^2+9x+18\right)\\= 8x^2+18x+36[/tex]

What is the volume of this rectangular prism?

Answers

Answer: The volume is 5 cm^3

Step-by-step explanation:

v= lwh

v= 4/1 * 1/2* 5/2

v= 20 /4

v= 5

Answer:

the answer is attached to the picture

Please help me answer c

Answers

The solution and the answer are in the photograph.

help me for brainitest pls

Answers

Answer:

3/6+4/6=7/6 (or 1 1/6)

Step-by-step explanation:

Multiply 1/2 by 3, add the top and bottom numbers together

Then I simplified 7/6 to 1 1/6 because 7 goes into 6, 1 time and there is still 1 remaining

Please help me with Algebra 2. It's about radians and degrees.

Answers

Answer:sin30 cos 40 tan 90

Step-by-step explanation:

4xy is the greatest common factor of 36xy^2 - 48x^2y

Answers

Answer:

Step-by-step explanation:

12xy(3y - 4x)

the GCF is 12xy

Define dot product, inner product, cross product.

Answers

Answer:

Dot product. ... In Euclidean geometry, the dot product of the Cartesian coordinates of two vectors is widely used and often called "the" inner product (or rarely projection product) of Euclidean space even though it is not the only inner product that can be defined on Euclidean space; see also inner product space.

Step-by-step explanation:

Answer:

- A dot product is the product of the magnitude of the vectors and the cos of the angle between them.

- A cross product is the product of the magnitude of the vectors and the sine of the angle that they subtend on each other.

- An inner product is a generalization of the dot product.

Step-by-step explanation:

Dot product - the sum of the products of the corresponding entries of the two sequences of numbers. Geometrically, it is the product of the Euclidean magnitudes of the two vectors and the cosine of the angle between them. These definitions are equivalent when using Cartesian coordinates.

Cross Product - The cross product is a mathematical operation which can be done between two three-dimensional vectors. It is often represented by the symbol. After performing the cross product, a new vector is formed. The cross product of two vectors is always perpendicular to both of the vectors which were "crossed".

Inner product - In a vector space, it is a way to multiply vectors together, with the result of this multiplication being a scalar.

solve 3y^{2} - (y + 2) (y - 2)

Answers

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

Answer:

the answer is attached to the picture

What is the x please answer me quick ​

Answers

first u do a squared +b squared =c squared aka pythagorean theorem then so u already have c squared so you would do 5x5=25 and 13x13=169 so then the equation would be 25+?=169 then do 169-25 which equals 144 and then do the square root of that which is 12 THE ANSWER IS 12

Morgan has 5 blue t-shirts , 3 green t-shirts and 2 red t-shirts . She randomly picks a shirt. What is the probability of choosing each color?

Answers

Answer:

Confusing question but I think it's 10:10

Step-by-step explanation:

Total outcome = 5:3:2

= 5+3+2

=10.

Probability = number of success

Total outcome

= 10/10

Therefore the probability of Morgan choosing each colour is 10:10.

The temperature outside dropped 13°F in 7 hours. The final temperature was -2°F. What was the starting temper

Answers

Answer:

11 degrees Fahrenheit

Step-by-step explanation:

-2 + 13 = 11

Answer:

11°F

Step-by-step explanation:

4.74 kilograms= grams​

Answers

1 kilogram = 1,000 grams. So, multiply 4.74 by 1,000, and you get 4,740 grams.

Please I really need the answer for this

Answers

Answer:

dont answer it

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