Janie can stuff 30 envelops in one minute. Find an expression for the number of envelopes she can stuff in n hours?

Answers

Answer 1
Answer: 30(60n) or 30*60*n

Related Questions

Determine the volume and the surface area of the three dimension figure

Answers

Answer:

Volume = 18 cm^3

Surface Area = 58 cm^2

Step-by-step explanation:

Find the volume with the formula V=w*h*l

W= width

H = height

L = length

W= 2cm

H= 1 cm

L= 9 cm

V= w*h*l

V= 2cm * 1 cm * 9cm

V= 18 cm^3

Find the surface area with the formula A= 2(w*l + h*l + h* w)

W= width

H = height

L = length

W= 2cm

H= 1 cm

L= 9 cm

A= 2(w*l + h*l + h* w)

A= 2(2cm*9cm + 1cm*9cm + 1cm* 2cm)

A= 2(29cm)

A= 58cm^2

The quadratic function f(x) = -x2 - 6x - 8 is graphed.
What are the solutions of the quadratic equation 0 =
x2 - 6x - 8?
Ту
2
O 2 and 4
0-2 and 4
0-2 and 4
O: 2 and 4
6 5 A
-3
-1
X
-2
ون

Answers

Answer:

-2 and -4

Step-by-step explanation:

When the quadratic equation equals 0, that means when y = 0.

By looking at the graph, whenever y = 0 is when the graph crosses the x-axis.

The graph crosses the x-axis at only two points:

(-4, 0) and (-2, 0)

So the solutions to the graph when  -x^2 - 6x - 8 equals 0 is -2 & -4.

Hope it helps (●'◡'●)

Answer:

-2 and -4

Step-by-step explanation:

if you'll notice the function goes through the x axis at -2 and -4

what is the LCM of 2 Express on if there is no common factor​

Answers

Answer:

I started by dividing 2940 by the smallest prime that would fit into it, being 2. This left me with another even number, 1470, so I divided by 2 again. The result, 735, is divisible by 5, but 3 divides in also, and it's smaller, so I divided by 3 to get 245. This is not divisible by 3 but is divisible by 5, so I divided by 5 and got 49, which is divisible by 7.


An environmentalist would like to estimate the true mean weight of all cars. To do so, she selects a random sample of
30 cars and determines that the 90% confidence interval for the true mean weight to be 2.8 to 3.4 tons. Which of the
following would increase the margin of error for this confidence interval?
O selecting another sample
O increasing the sample size
O increasing the confidence level
O decreasing the confidence level

Answers

decreasing the confidence level

If the confidence level will increase, the margin of error will also increases.

What is margin of error?

The margin of error is defined a range of values below and above the sample statistic in a confidence interval.

What is confidence interval?

The confidence interval is a way to show what is uncertainty is with a certain statistic.

According to the given question

Environmentalist estimating true mean weight or all cars.

For the true mean weights of 2.8 to 3.4 tons the confidence level is 90%.

Since, the confidence level increases, the critical value increases and hence the margin of error increases.

Therefore, if the confidence level will increase, the margin of error will also increases.

Find out more information about confidence interval and margin error here:

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which is the best estimate of (-3/5) (17 5/6)?​

Answers

Answer:

-170 / 10

Step-by-step explanation:

A water reservoir is shaped like a rectangular solid with a base that is 60 yards by 30 yards, and a vertical height of 30 yards. At the start of a three-month period of
no rain, the reservoir was completely full. At the end of this period, the height of the water was down to 6 yards. How much water was used in the three-month period?
How much water was used in the three-month period?


Please help :)

Answers

Answer:

43200 yd³

Step-by-step explanation:

The water reservoir is a rectangular solid that is a three dimensional shape with six quadrilateral faces (cuboid).

This reservoir has a base of 60 yards by 30 yards, and a vertical height of 30 yards. Therefore:

Volume of the reservoir = area of base * vertical height = 60 * 30 * 30 = 54000 yd³

This reservoir hence have a volume of 54000 yd³ when filled up with water.

After 3 months, the height of the water was down to 6 yards therefore the the volume is:

Volume after 3 months = area of base * vertical height = 60 * 30 * 6 = 10800 yd³

The amount of water used after 3 months = volume of water at beginning - volume of water after 3 months

The amount of water used after 3 months = 54000 - 10800 = 43200 yd³

The probability that a certain movie will win an award for acting is 0.15, the probability that it will win an award for direcing is 0.23, and the probability that it will win both is 0.09. Find the probabilities of the following.

a. The movie wins an award for acting, given that it wins both awards.
b. The movie wins an award for acting, given that it wins exactly one award.
c. The movie wins an award for acting, given that it wins at least one award.

Answers

Answer:

a) 0.15 / 0.09

b) 0.15 / 1

c) 0.15 / 0.23

Find the measure of angle C of a triangle ABC, if angle A=a and angle B= 2a.
*The answer is not 180-3a

Answers

3.14 - 3a Radians

Because
180o = 3.14 radian

The angle C of the triangle ABC is ( π - 3a ).

What is an angle?

The angle is defined as the span between two intersecting lines or surfaces at or close to the point where they meet.

The angle will be calculated as follows:-

We know that the sum of the angles of the triangle is 180 degrees or π in radians.

∠A + ∠B + ∠C = π

a + 2a + ∠C = π

∠C = π - a - 2a

∠C = π - 3a

Therefore angle C of the triangle ABC is ( π - 3a ).

To know more about an angle follow

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i’ll give brainliest to the right answer

Answers

the answer is A. 0.0000805

Answer:

First one , 0.0000805

Step-by-step explanation:

With negative exponents the decimal is moved to the left the amount of the exponent. The spaces are filled with zeros.

With positive exponents the opposite occurs.  The decimal moves to the right.

I need help answering this question.

Answers

Answer:

hello dude

x - 9 = - 12

x = 9 -12

x = -3

HAVE A NİCE NİGHT

Step-by-step explanation:

Greetings from Turkey

We have to,

find the required value of x.

Let's start,

→ x - 9 = -12

→ x = -12 + 9

→ x = -3

Thus, -3 is the value of x.

Can someone pls help asap i will give Brainliest

Answers

Answer:

24/145

Step-by-step explanation:

Trigonometric identities are equalities involving trigonometric functions and remains true for entire values of the variables involved in the equation.

Some trigonometric identities are:

sin(a + b) = sinacosb + cosasinb; sin(a - b) = sinacosb - cosasinb

cos(a + b) = cosacosb - sinasinb; cos(a - b) = cosacosb + sinasinb

Given that sin a = 3/5. sin a = opposite/hypotenuse.

Hence opposite = 3, hypotenuse = 5. using Pythagoras:

hypotenuse² = opposite² + adjacent²

5² = 3² + adjacent²

adjacent² = 16

adjacent = 4

Given that sin a = 3/5. a = sin⁻¹(3/5) = 36.86

cos a = cos 36.86 = 4/5

cos b = -20/29; b = cos⁻¹(-20/29) = 133.6

sinb = sin(133.6) = 21/29

sin(a + b) = sinacosb + cosasinb = (3/5 * -20/29) + (4/5 * 21/29) = -12/29 + 84/145

sin(a + b) = 24/145

A meteorologist preparing a talk about global warming compiled a list of weekly low temperatures (in degrees Fahrenheit) he observed at his southern Florida home last year. The coldest temperature for any week was 36°F, but he inadvertently recorded the Celsius value of 2°. Assuming that he correctly listed all the other temperatures, explain how this error will affect these summary statistics:a) measures of center: mean and median.b) measures of spread: range, $IQR,$ and standard deviation.

Answers

Answer:

nr.herkyrsfdlufshfsyfs

Step-by-step explanation:

dsfsyfksutryrysyrslufzmfyzydzufmzmhfzl

hdhfuthfzhkrskyrsgj

please help with this quadratic equations​

Answers

Answer:

I don't understand the question

hello here are the answers (pls brainly for this) ✌
1) 3(x+12)
2) 4x(x+14)
3) x^2-14x-40
4) (x-2)(x-12)
5) (x^2+4) (x+2) (x-2)
6) (9x+7) (9x-7)
7) 2(5x+6) (5x-6)
8) 2(x+1) (x-9)
9) (4x-3) (x+5)
10) 7x(5-2x)
11) (x-3) (x^2+5)
12) (s+5) (5r-3)
13) (5x-6x)
14) (5x-4) (25^2+20x+16)
15) 2(x+4y) (x^2-4xy+16y^2

:3

Bindi is buying pet food with a coupon for 20% off. The original price of the bag of food is $39.
Which answer gives the best estimate for the price after the discount?

$48
$19
$34
$32

Answers

I think its $32.
.20 x 39 = 7.8
39 - 7.8 = $31.2

​ solve it

[tex]4 \frac{1}{3} \times (3 \frac{1}{3} \times 3 \frac{1}{2} ) \ {}^{7} \div 9 \frac{3}{4} [/tex]
solve​ it fast

Answers

Answer:

[tex]\frac{257357187500}{19683}[/tex]

Step-by-step explanation:

We can convert these mixed fractions to ordinary fractions.

[tex]4(1/3)=\frac{(4*3)+1}{3}=\frac{13}{3}[/tex]

[tex]3(1/3)=\frac{10}{3}[/tex]

[tex]3(1/2)=\frac{7}{2}[/tex]

[tex]9(3/4)=\frac{39}{4}[/tex]

Then we have:

[tex]\frac{13}{3}*(\frac{10}{3}*\frac{7}{2})^{7}*\frac{4}{39}[/tex]

[tex]\frac{257357187500}{19683}[/tex]

I hope it helps you!

sum of first n terms of an ap sequance is 3n2+5n.what is the sum of its first n+1 terms.find the sum of its first 10 terms.



Answers

Answer:

a) 3n^2 + 11n + 8

b) 350

Step-by-step explanation:

10) 3(10^2)+ 5*10 = 350

n+1) 3(n+1)^2 + 5(n+1)

        3(n^2 + 2n + 1) + 5n+5

         3n^2 + 6n+3 + 5n + 5

           3n^2 + 11n + 8

simplify 2x²y²÷m³×m²÷2xy​

Answers

x^3y^3 divided by m is the answer

1) Write an equation in slope-intercept form of the line with slope of 6 and y-intercept of -3. Then graph the line. 2) Write an equation in point-slope form of the line with slope -3/5 that contains(-10 ,8). Then graph the line.

Answers

Answer:

An equation in the slope-intercept form is:

y = a*x + b

Where a is the slope, and b is the y-intercept.

a)

Here we have a slope of 6 and a y-intercept of -3

Then the equation is:

y = 6*x - 3

Now we want to graph this.

To graph it, we first need to find two points (x, y) that belong to this equation, then we can graph the points, and connect them with a line.

To find the points, we evaluate in two different values of x.

x = 0

y = 6*0 - 3 = -3

Then we have the point (0, -3)

x = 1

y = 6*1 - 3 = 3

Then we have the point (1, 3)

The graph of this line can be seen in the image below (the red one)

b) Similar to before, here the slope is -3/5, then the equation is something like:

y = (-3/5)*x + b

Now we also know that the line passes through the point (-10, 8)

This means that when x = -10, we must have y = 8

Replacing these two in the equation we get:

8 = (-3/5)*-10 + b

8 = 6 + b

8 - 6 = 2 = b

Then this equation is:

y = (-3/5)*X + 2

The graph can be found in the same way as before, the graph of this function can also be seen in the image below (the green one)

A survey of high schools within a district revealed that for ninth graders, 38% offer no honors classes, 12% offer one
honors class, 25% offer two honors classes, 20% offer three honors classes, and 5% offer four honors classes. A
high school is selected at random. What is the probability that it offers an even number of honors classes?

0.30
O 0.32
O 0.62
O 0.68

Answers

Answer:

0.30

Step-by-step explanation:

Find the probability by adding the probabilities together for having two and four honors classes.

25% offer two honors classes and 5% offer four honors classes. Add these together:

25 + 5

= 30

So, there is a 30% probability that the school offers an even number of honors classes.

The correct answer is 0.30.

log2(6x) – log2 (x)-2

Answers

Answer:

xlog(64)−xlog(2)−2

Step-by-step explanation:

Simplify 6log(2) by moving 6 inside the logarithm.

log(2^6)x − log(2)x − 2

Raise 2 to the power of 6.

log(64)x − log(2)x − 2

Reorder factors in log(64)x − log(2)x −2.

How many fourths are in 3 4 ?
O 4 Over 16
O One-half
O 3
O 4

Answers

Answer:

⭕ 3

hope it helps much


Find in the triangle. Round to the nearest degree.

Answers

Answer:

D. 34

Step-by-step explanation:

Because this is a right triangle we can use sin, cos, tan.

Use cosine because the values of the adjacent side and hypotenuse are already given.

cos(θ) = 72/87

Because we are solving for the angle measure (and not the measure of the side) we need to use inverse cos.

cos⁻¹ = 72/87

put into a calculator and answer is approximatelyn34 degrees.


74. A portion of a board has length x feet. The other part has
length (7x – 9) feet. Express the total length of the board
as a simplified expression in x.

Answers

Step-by-step explanation:

Given that,

Length of the one portion of the board = x feetLength of the another portion = (7x – 9) feet

According to the question,

[tex]\longrightarrow[/tex] Total length = Sum of the length of the two pieces

[tex]\longrightarrow[/tex] Total length = {x + (7x – 9)} feet

[tex]\longrightarrow[/tex] Total length = {x + 7x – 9} feet

[tex]\longrightarrow[/tex] Total length = (8x – 9) feet

Therefore, the total length of the board as a simplified expression in x is (8x 9) feet.

Find two positive numbers whose product is 64 and whose sum is a minimum. (If both values are the same number, enter it into both blanks.) (smaller number) (larger number)

Answers

Answer:

Both the numbers are 8.

Step-by-step explanation:

Let the two numbers are p and 64/p.

The sum is given by

[tex]S = p +\frac{64}{p}\\\\\frac{dS}{dp}= 1 - \frac{64}{p^2}\\\\\frac{dS}{dp}=0\\\\\frac{64}{p^2}=1\\\\p= \pm 8[/tex]

So, the sum is minimum for p = 8 0r - 8, so the two numbers 8.

CAN SOMEONE HELP ME ON ANALYZING DOT PLOTS!!!

Answers

Answer:

yes

Step-by-step explanation:

but I can't see them here

An automatic machine inserts mixed vegetables into a plastic bag. Past experience revealed that some packages were underweight and some were overweight, but most of them had satisfactory weight.
Weight % of Total Underweight 2.5 Satisfactory 90.0 Overweight 7.5a) What is the probability of selecting and finding that all three bags are overweight?b) What is the probability of selecting and finding that all three bags are satisfactory?

Answers

Answer:

a) 0.000016 = 0.0016% probability of selecting and finding that all three bags are overweight.

b) 0.729 = 72.9% probability of selecting and finding that all three bags are satisfactory

Step-by-step explanation:

The condition of the bags in the sample is independent of the other bags, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

a) What is the probability of selecting and finding that all three bags are overweight?

2.5% are overweight, which means that [tex]p = 0.025[/tex]

3 bags means that [tex]n = 3[/tex]

This probability is P(X = 3). So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 3) = C_{3,3}.(0.025)^{3}.(0.975)^{0} = 0.000016[/tex]

0.000016 = 0.0016% probability of selecting and finding that all three bags are overweight.

b) What is the probability of selecting and finding that all three bags are satisfactory?

90% are satisfactory, which means that [tex]p = 0.9[/tex]

3 bags means that [tex]n = 3[/tex]

This probability is P(X = 3). So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 3) = C_{3,3}.(0.9)^{3}.(0.1)^{0} = 0.729[/tex]

0.729 = 72.9% probability of selecting and finding that all three bags are satisfactory

!!!!Plzzz help!!!!

For your initial post: Discuss your strategy for
establishing identities. Why do you think it is
usually preferable to start with the side
containing the more complicated expression
when establishing an identity?

Answers

Answer:

Yes it is very good for establishing identities.

Step-by-step explanation:

Since its a very preferable start it is a very good way to establish identity.

There are 9 people in an office with 4 different phone lines. If all the lines begin to ring at once, how many groups of 4 people can answer these lines?

Answers

Two groups of four people can answer the lines

If the measure of angle 2 is 920 and the measure of angle 4 is 2
what is the value of x?
14.
23

Answers

Step-by-step explanation:

the value of x will be 920

Cole biked at 5 mph for 1 1/2 hours. Which of the following choices show how far he biked?

Answers

Answer:

Should be 5 1/2 if thats on there

Step-by-step explanation:

u take 11/2 and take out the 1 u get 10/2 so u cut 10 in half get 5 then add the one and make it 5 1/2

5 1/2 jus took that question got it right.
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A hydrocarbon having chemical formula C4H8, has one double bond. Identify its class. The following account balances are taken from the December 31, 2018, financial statements of ABZ Advertising Company. The company uses accrual basis accounting.Advertising Revenue $46,982Cash 41,516Accounts Receivable 7,296Interest Expense 2,299Accounts Payable 5,000Operating Expenses 37,460Deferred Revenue 1178Equipment 18,648Income Tax Expense 2,326The following activities occurred in 2019: 1. Performed advertising services on account, $55,000. 2. Received cash payments from customers on account, $10,400. 3. Received deposits from customers for advertising services to be performed in 2020, $2,500. 4. Made payments to suppliers on account, $7,000. 5. Incurred $45,000 of operating expenses; $39,000 was paid in cash and $6,000 was on account and unpaid as of the end of the year.Required:What is the amount of revenue that will be reported on the income statement for the year ended December 31, 2019? 28. Which verb is NOT in the future tense?*He will goHe shall comeHe will arrive.He leaves The population of a bacteria colony is growing exponentially, doubling every 6 hours. If there are 150 bacteria currently present, how many (to the nearest ten bacteria) will be present in 10 hours What differences does distillation rely on to separate out parts of a solution?O A. Different densitiesO B. Different molecular massesC. Different boiling pointsO D. Different molecular sizes please give me questions on natural vegetation. I am studying for my exam All of the following are true of functions except: Group of answer choices They define specific tasks that can be used at many points in a program A function call must specify the name and arguments of the function The definition of a function usually is visible to other functions The implementation of a function is hidden from the caller m(x) = x+5/ x-1 and n(x) = x-3, which function has the same domain as (mn) (x)? Identify each of the following nouns. On the line provided, write COLL for collective noun or COMP for compound noun. Hint: One noun is both collective and compound. (image attached) help please!! first answer gets marked brainliest! The controller of Oriole Industries has collected the following monthly expense data for use in analyzing the cost behavior of maintenance costs.Month Total Total Maintenance Costs Machine HoursJanuary $2,860 320February 3,160 370March 3,760 520April 4,660 670May 3,360 520June 5,260 720Determine the variable cost components using the high-low method. (Round answer to 2 decimal places e.g. 2.25.)Variable cost per machine hour $Determine the fixed cost components using the high-low method.Total fixed costs $ The simple interest on certain principal is 1/5 of the amount in 5 years, find the rate of interest.a. 5%b. 80%c 6 2/3d 10% The manager of a certain division at Alpha Manufacturing is evaluated on how efficiently the division uses equipment, buildings, and other assets to generate profits. This division is considered a(n): Multiple choice question. cost center investment center profit center asset center According to the author of "The Neglected Senses," why did students whowere slightly sighted move more cautiously than those who werecompletely blind?A. Their vision was so poor they could not see the obstacles that stoodin their way.B. They were more reluctant to accept the help of others in negotiatingthe hallways.C. They were trying to use what vision they had instead of utilizing theirother senses.D. They did not acknowledge their blindness, so they did not benefitfrom the training offered to blind people. At a temperature of -25 C, a sample of gas in a rigid container exerts a pressure of 55.8 kPa. At what temperature will the pressure reach 145 kPa? Which part was f the economy is represented by box A on the circular flow model?A. HouseholdsB. Product markets C. Resource markets D. Businesses HELP ASAP BRAINLIST AND 10POIMTS AND 5 STAR AND A THANKS BUT IF CORRECT D. Write the naming words which go with these describing words:Describing wordNaming word1. oldMan2. bold3. hungry4. beautiful5. little6. sweet Please Help..!! GERMAN LANGUAGE PreguntasIn Spanish, write logical questions that would elicit the responses given below.changed1. Empec a ir al gimnasio el mes pasado.2.La vi ayer.3.Aqulla es amarilla.4.Son doce dlares.5.Diego me prest su motocicleta.