Three postal workers can sort a stack of mail in 15 minutes, 15 minutes, and 30 minutes, respectively. Find how long it takes them to sort the mail if all three work together.
min

Answers

Answer 1

Answer: 10 minutes

Step-by-step explanation:

x·1/20 + x·1/25 + x·1/100 = 1

Multiply each term by 100 to clear the equation of all fractions

100x/20 + 100x/25 + 100x/100 = 100

5x + 4x + 1x = 100

10x = 100

x = 10

The answer is 10 minutes


Related Questions

help pleaseeeeeeeeeeeeee

Answers

Answer:

a

Step-by-step explanation:

Carl went out for breakfast.
• The price of his meal was $12.35.
• The sales tax was 7.5% of the price of the meal.
• The tip was 25% of the price of the meal and the sales tax.

To the nearest cent, how much total money did Carl pay for breakfast including the price of his meal, sales tax, and tip?

Answers

Answer: $16.60

Step-by-step explanation:

Price + Tax = 12.35+0.93

Total + tip = 13.28+3.32

total: 16.60

The total money did Carl pay for breakfast including the price of his meal, sales tax, and tip  $16.60

We have given that,

Carl went out for breakfast.

• The price of his meal was $12.35.

• The sales tax was 7.5% of the price of the meal.

• The tip was 25% of the price of the meal and the sales tax.

We have to determine the nearest cent, how much total money did Carl pay for breakfast including the price of his meal, sales tax, and tip.

What is the formula for the total money?

Total money=price + tax

Price + Tax = 12.35+0.93

Total + tip = 13.28+3.32

Total money =16.60

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Evaluate the expression when a = 6 and x = -3.
-a+7x

Answers

Answer:

-27

Step-by-step explanation:

The equation -a+7x, when plugged in shows -6+7*(-3).

This gives us -6-21 which is -27.

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Thanks!

A triangle has angles measuring 58 and 93 degrees. What is the measure of the third angle?

Answers

The third angle is 29 degrees.

180 - 58 - 93 = 29

Find the area of the following figure with the given dimension.

Answers

Answer: 54 cm^2

Step-by-step explanation:

Area of a triangle= 1/2 * b * h

A= 1/2 * 9 * 12

A= (9*12)/2

A= 108/2

A- 54 cm^2


Find the 11 term of the following geometric sequence.
10, 40, 160, 640, ...

Answers

Answer:

099 787 989

Step-by-step explanation:

Which of the following is the graph of the function shown above?

Answers

it’s the second or either the forth graph

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Which of the following is a correct tangent ratio for the figure?
A) tan(39°) = 11/15
B) tan(11°) =39/15
C) tan(11°) = 15/39
D) tan(39°) = 15/11

Answers

Answer:

A is the correct answer .

Step-by-step explanation:

Hope it helps dear .

Answer:A

Step-by-step explanation:

I took the test

HELP PLS Find the measure of the angle indicated.

Answers

Answer:

I think that that angle would also be 102 degrees.

A dress that is size x in France is equaivalent to size​ d(x) in the United​ States, where ​d(x)x32.
​(a). Find a function that will convert U.S. dress size to French dress size.
​(b) Use the inverse function to find the French size of a dress if it is U.S. size .

Answers

Answer:

[tex](a)\ d'(x) = x + 32[/tex] i.e. The inverse function

[tex](b)\ d'(10) = 42[/tex] i.e. The French size of a dress if it is U.S. size 10 is 42.

Step-by-step explanation:

Given

[tex]d(x) = x - 32[/tex]

Solving (a): The inverse function

[tex]d(x) = x - 32[/tex]

Replace d(x) with y

[tex]y = x - 32[/tex]

Swap y and x

[tex]x = y - 32[/tex]

Make y the subject

[tex]y = x + 32[/tex]

Replace y with d'(x)

[tex]d'(x) = x + 32[/tex]

Hence, the inverse function is: [tex]d'(x) = x + 32[/tex]

Solving (b): US size of 10

[tex]d'(x) = x + 32[/tex]

Substitute [tex]x =10[/tex]

[tex]d'(10) = 10 + 32[/tex]

[tex]d'(10) = 42[/tex]

Paige and her family went to the movies. They bought 4 tickets and paid $12
for popcom. They spent $40. How much did each ticket cost?
Choose two answers: one for the equation that models this situation and one
for the correct answer.
A. Answer:$3
B.Equation:12+4x=40
C. Equation:4+12x=40
D. Answer:$7

Answers

Answer:

D. $7

Step-by-step explanation:

i think it would be "D". the reason why i chose that answer is because first of all the total they spent is $40 right? as we see in this equation, paige and her family purchased $12 for popcorn. what does that mean? it means that 40-12= $28 that is left. the money that is left is the total of all 4 tickets. 28 divided by 4 is 7 so the answer is $7

A television selling for $940.00 is marked down by 15%. What is the price after the markdown?

Answers

Step-by-step explanation:

100%-> 940.00

100%-15%=85%

85%->940.00 ÷ 100 x 85

=799. 00

find the volume of the rectangular prism. geometry hw plz help

Answers

Answer:

189 cm^3

Step-by-step explanation:

7 times 9 times 3=189

to find the average result of rolling a six sided dice josh rolls a dice 100 times the table shows how many times josh rolled each number what is the mean or average of the dice rolls​

Answers

Answer:

500

Step-by-step explanation:

The number of times that josh rolled each number is given so the mean or average of the dice rolls​ is 3.6.

What is probability?

Probability is a branch of mathematics that deals with the study of random events or outcomes.

It is concerned with determining the likelihood of an event or outcome occurring in a given situation.

The probability of an event is a number between 0 and 1, with 0 indicating that the event is impossible and 1 indicating that the event is certain.

The average of dice roll is:

Average = 1/100 (15 x 1 + 18 x 2 + 14 x 3 + 16 x 4 + 19 x 5 +18 x 6)

Average = 1/100 (15 + 36 + 42 + 64 + 95 + 108)

Average = 1/100 x 36

Average = 3.6

Thus, the answer is 3.6.

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Your question seems incomplete, the probable complete question is:

look at pic 10 pts will mark brainilest

Answers

Answer:

120 cm squared

Step-by-step explanation:

To find this is like finding a rectangle, you can take the triangular part of it and move it over to the side to become a rectangle

we can find the rectangle side by doing

21-6=15

then multiply it

15*8=120

Find the amount of money that will be accumulated in a savings account if $7050 is invested at 5.0% for 25 years and the interest is compounded continuously. Round your answer to two decimal places.

Answers

Answer:

$24606.92

Step-by-step explanation:

P(t) = P(0) e^rt              P(0) money at the beginning r =%/100  P(t) = future value

     = 7050 e^(0.05 · 25)             e = inv natural log (1)

     =  7050 · 2.71828^1.25

     = $24606.92

It takes ⅙ of a yard of ribbon to make one bow. How many bows can be made with 4 yards of ribbon?

Answers

Answer:

24 bows can be made with 4 yards of ribbon

you can make 24 1/6 yard bows with 4 yards of ribbon

Pls help I will mark branliest

Answers

Answer:

Step-by-step explanation:

a line is parallel to y=4x+1 and intersects the point (-2,4) what is the equation of this parallel line

Answers

Answer: y=4x+12

Step-by-step explanation:

a parallel line has the same slope, so the slope remains 4

use point slope formula to write the equation

[tex]y-y_{1} =m(x-x_{1} )\\y-4=4(x--2)\\y-4=4(x+2)\\y-4=4x+8\\y=4x+12[/tex]

Answer:

y=4x+12

Step-by-step explanation:

When two lines are parallel, their slopes are the same. In y=mx+c form, m is the slope. So the slope of our parallel line is 4:

y=4x+c

To find c, plug in (-2,4) into the equation because we know it's a point on the line:

4=4(-2)+c

4=-8+c

c=12

So our equation is y=4x+12

2x + y =8 and 4x -2y = 6

Answers

Answer:

x=1.25 and y=-5.5

Step-by-step explanation:

2x+y=-8, 2x=-y-8 or 4x=-2y-16. Plug this value in the second equation, we have - 2y-16-2y=6, y=-5.5. Plugging this in any equation we have, x=1.25

Will give brainliest for correct answer

Answers

Answer:

A function is a rule that assigns to each input exactly one output.

Step-by-step explanation:

If you have more than one of the same inputs for multiple outputs, it would create a vertical line at somepoint on your line.

Answer:

The correct answer is "a rule that assigns to each input exactly one output".

Step-by-step explanation:

In mathematics, a function is a binary relation between two sets that associates to each element of the first set exactly one element of the second set. Typical examples are functions from integers to integers, or from real numbers to real numbers.

A standard bathtub holds 60 gallons of water. A full tub drains 12 gallons per minute. Which of the following tables best represents the situation?

Answers

J.

x represents the minutes and y shows how many gallons over that time.

The correct table for best represents the situation is shown in Table J.

What is Equation of line?

The equation of line in point-slope form passing through the points

(x₁ , y₁) and (x₂, y₂) with slope m is defined as;

⇒ y - y₁ = m (x - x₁)

Where, m = (y₂ - y₁) / (x₂ - x₁)

Given that;

A standard bathtub holds 60 gallons of water.

And, A full tub drains 12 gallons per minute.

Now, From table J;

Rate of change is,

⇒ (24 - 12) / (2 - 1)

⇒ 12 / 1

⇒ 12 gallons per minutes

Which is given in situation.

Thus, The correct table for best represents the situation is shown in Table J.

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Help! find the area of the parallelogram

Answers

28.2

Step-by-step explanation

A=bh=6·4.7≈28.2

There is a rectangular path for running in Kaylee's town. She runs around the path everyday. one side of the path is 5 1/2 kilometers long. Another sode is 3 1/2 kilometers long.​

Answers

Answer:

3.45

Step-by-step explanation:

calculator

Answer:

16.8 km

Step-by-step explanation:

Perimeter is the sum of all sides.

For a rectangle , perimeter = lenght + lenght + base + base

Perimeter = 5.2 + 5.2 + 3.2 + 3.2

Perimeter = 16.8 km

Suppose 12% of students surveyed said they have tried riding a zip line.

a. How many would say they have tried riding a zip line if 100 students were surveyed.

Answers

Answer:

12.

12% of 100= 12.

Layla has 3/4 of a can of paint. She uses 2/3 of the paint for one wall in her bedroom. How much of the can did she use? PEASE ANWSER!

Answers

Answer:

8/12 of the can

Step-by-step explanation:

Make the denominator of both 12. Then 2/3 is 8/12.

Answer:

its A, she used 1/12 of the can

Find the area of the parallelogram shown below.
6
10
11
square units?

Answers

Area of parallelogram = base x height
Area = 6 x 10
= 60 unit ^2

Answer:

66 Sq. un

Step-by-step explanation:

The Intuition for why the area of a parallelogram is A=bh (area = base x height)

The formula for the area of a parallelogram is base times height, just like the formula for the area of a rectangle.

Have a great day!

what does 2 x 8/10 equal?

Answers

Answer:

1.6

Step-by-step explanation:

8/10 x 2

2 divides 10

8/5

8 divided by 5=1.6

please give me branliyest

An artist makes triangular -shaped sculptures using steel long. There are several rods are 12,13,14,15 or 16 feet long .there are several rods of each length?

Answers

Answer:

You are having a stroke.

Step-by-step explanation:

1. Go to the hospital.

De acuerdo con el ciclo práctico o ciclo real de funcionamiento de un motor, las válvulas de admisión y escape no se abren y cierran exactamente en los puntos muertos superior e inferior. Debido a esto se genera un instante donde están abiertas las válvula de admisión y de escape al mismo tiempo, a lo que se le conoce como traslape o cruce valvular - ¿Cómo se determina el traslape?

Answers

Answer:

no one here speaks spanish-

Step-by-step explanation:

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