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

When evaluating special offer decisions, management should consider: (Check all that apply.)

Answers

Answer:

Incremental Costs.

Available Capacity.

Incremental Revenues.

Existing sales.

Step-by-step explanation:

please please i need help i will mark u brill

Answers

Answer:

Step-by-step explanation:

65 ÷ b + 8 x 4 = 20

Putting value of b = 5 in the equation

65 ÷ 5 + 8 x 4 = 20

13 + 8 x 4 = 20

13 + 32 = 20

45 = 20

Bringing like terms on one side

45 - 20 = 25

Answer:

25

Step-by-step explanation:

Replace b for 45 in the equation

65/5+8x4=

According to the rules of PEMDAS (parentheses, exponents, multiplication, division (done in order they are given) addition and subtraction) You have to solve 65/5 first and then 8x4

13+8x4=

13+32-20=25

find the surface area of the cube with 7 inches sides

Answers

Answer:

294

Step-by-step explanation:

surface area of a cube = 6* a^2

6 * 7^2

= 6* 49

= 294

The volume of a sphere depends on its radius, so the volume is a function of the radius. If this function is called V(r), use the formula below to compute V(4), the volume of a sphere with a radius of 4 units.

Answers

Answer:

the volume of a sphere with a radius of 4 units.

=4/3πr³=4/3×π×64 is your answer

Simplify the following expression: 3x-(2+4x)

Answers

Answer:negative x and negative 2

-x    -2

Step-by-step explanation:


there is less customer to the organization. Use the six steps in decision making process to solve the
problem in the organization?​

Answers

Answer:

Step 1: Define Desired Outcomes and Actions. ...

Step 2: Endorse the Process. ...

Step 4: Develop Alternatives or Options. ...

Step 5: Evaluate, Select, and Refine Alternative or Option. ...

Step 6: Finalize Documentation and Evaluate the Process.

Step-by-step explanation:

What is area?


The space inside a circle.


The distance across a circle.


The distance around a circle.

Answers

Answer:

The space inside a circle

Step-by-step explanation:

Select the interval where g is positive.
Choose 1 answer:
A
1 < x < 2
B
3 < 3 < 4
4 < x < 5

Answers

Answer: it’s a

Step-by-step explanation:

What is the effect on the graph of the function f(x) = [xl when f(x) is changed to f(x + 9)?
Plzz

Answers

Answer:

when y or f(x) equals x then it's a straight line at the origin. if f(x+9) = |x|

f(x) = |x+9|

if you set that equal to zero then X= -9

so shifting over to the left is the right choice

Step-by-step explanation:

what's 965 divided by 7

Answers

Answer:

137(the exact amount 137.8571428571429)

Step-by-step explanation:

If i did the Whole thing with paper it would take very long i used calculator instead

Answer:

137.857142857

Is the answer

Which is NOT true?
+
A.
5 + 14 = 20.- 1
B.
9 + 5 = 7 + 7
15 = 4 + 11
D.
15 - 9 = 9-4
What’s the answer

Answers

Answer:

D. 15 - 9 = 9-4

Step-by-step explanation:

Thank You :3

Answer:

D

Step-by-step explanation:

What is the formula for circumference of a circle given the radius?

Answers

Answer:

formula for circumference of circle is 2πr

hope it helps.

Answer: 2πr

Step-by-step explanation:

im almost done with this hw. plz help!!! give explanation if you actually know the answer so ik u dont just want points....

Answers

Answer:

D

Step-by-step explanation:

1/12 X 110 = .0833333333 x 110 = 9.16

D. 9

Step-by-step explanation:

110÷12 = 9.1 however just round down to 9

since there are 12 equal pieces of the pie graph you would also count yellow and not exclude it

What is cos 30º?
O A. 13
B. 1
Oc.
O D.
3
2
E.
O F. 1 /

Answers

Answer: I do not understand the options you gave but but cos30º is equal to [tex]\sqrt{3}[/tex]/2 which is 0.86602540378.

Refer to the accompanying data set and use the 30 screw lengths to construct a frequency distribution. Begin with a lower class limit of 3.470 ​in., and use a class width of 0.010 in. The screws were labeled as having a length of 3 1/2 in

Answers

Answer:

Answer:

A) Total frequency = 30

B) Yes, the distribution is consistent with the label because the frequencies are greatest when the lengths are closest to the labeled size of 1/2 inches which is 0.5 inches.

Step-by-step explanation:

Since the class limit width is 0.010 from the question, we arrive at;

Class Limits Frequency

Length(Inches)

0.470 - 0.479 3

0.480 - 0. 489 5

0.490 - 0.499 9

0.500 - 0.509 12

0.510 - 0.519 1

Following is the frequency distribution table:

How to build a frequency table?

The lower limit is given as 3.470 inches.

The upper limit is 3.500 inches.

And the width of each class is 0.010 inches.

Therefore, the intervals will be:

3.470-3.480

3.480-3.490

3.490-3.500

To know more about frequency tables problems refer:

https://brainly.com/question/16148316

#SPJ2

If AB = 4x +20 and DC = 10x - 16 find x and AB

Answers

Answer: X=dc/10+8/5   X=AB/4 -5 hope it helps

Step-by-step explanation:

A state university annual report showed that its retention rate was at 24% and university administrators would like to increase this rate. After implementing several new programs during the last two years, the university reevaluated its retention rate. What is the correct alternative hypotheses for a test to determine whether the retention rate has increased during the last two years

Answers

Answer:

the alternative hypothesis is - p > 0.24

Step-by-step explanation:

Given that the retention rate is 24% = 0.24

So,

The alternative hypothesis is -

p > 0.24

Because the retention rate has increased during the last two years.

The expression 5x^2 + 25x + 70 can be used to estimate the height, in
meters, of a toy rocket x seconds after it is launched from a platform.
How many seconds does it take the rocket to hit the ground?

Answers

Answer:

Hence x is 7 seconds

Step-by-step explanation:

hope this helps

3 sin 0 = 3 cos 20
what is the solution set?

Answers

Answer:

Step-by-step explanation:

3 sinθ=3 cos 2θ

sin θ=cos 2θ

sinθ=1-2sin² θ

2sin²θ+sin θ-1=0

2sin²θ+2sinθ-sinθ-1=0

2sin θ(sin θ+1)-1(sin θ+1)=0

(sin θ+1)(2 sin θ-1)=0

sin θ=-1=-sin 90=sin (180+90)

θ=270

or sin θ=1/2=sin 30,sin (180-30)

θ=30,150

solution set is {30,150,270}

y=3x+5


you have to graph it

Answers

Try using m4thway or photom4th

(03.06)
Using the completing the square method, rewrite f(x) = x2 + 4x - 1 in vertex form,
f(x) = (x + 2)2 + 1

f(x) - (x + 2)2
oc
f(x) = (x + 2)2 + 4
Od
f(x) = (x + 2)2 - 5

Answers

The vertex form is 2X times 5+4 it’s also to add eggs +2+2+ one

Line m passes through the point (1, 2) and has a slope of 2/5 What is the equation of line m in standard form?

Answers

Answer:

5y - 2x = 8

Step-by-step explanation:

First off we have to find the y-intercept with : b = y-mx

[tex]b=2-(\frac{2}{5})(1)[/tex]

[tex]b=\frac{10}{5}-\frac{2}{5}[/tex]

[tex]b=\frac{8}{5}[/tex]

now we have the point slope form

[tex]y=\frac{2}{5}x+\frac{8}{5}[/tex]

Multiply both sides by 5

[tex]5y=2x+8[/tex]

Subtract 2x from both sides

[tex]5y-2x=8[/tex]

What is -56 = - 8z because I don’t even know the answer

Answers

Answer:

z=7

Step-by-step explanation:

7 times (-8)=-56

hope this helps:)

Answer:

I love algebra anyways  

the ans is in the picture with the steps  

(hope it helps can i plz have brainlist :D hehe)

Step-by-step explanation:

What is the area of the trapezoid below?

Answers

Answer:

Area 684 m squared

Step-by-step explanation:

26 + 46 = 72

72/2 = 36

36 x 19 = 684

Hope this helps!

9. The drone descends 2 feet per minute. Represent the drone's position
with an integer after 7 minutes. *
8 points

Answers

Answer:

-14

Step-by-step explanation:

lets assume its at 0 at t = 0

it desends 2 per 1

so after 7, its -2 * 7

and the answer is -14

What is the least common denominator of 1/6 and 5/12

Answers

Answer:

The least common denominator is 12.

Step-by-step explanation:

1/6 and 5/12.

Skip count by 6and 12.

6: 6,12,18,24,30.....

12: 12,24, 36,48...

12, appeared first, so 12 is the least common denominator.

hope it helps.

HELP! WILL GIVE BRANLIEST!

Answers

Answer:

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A store owner decided to collect data on his customers. On one day he observed:
48 people bought 1 item
32 people bought 2 or more items
16 people did not buy anything
Based on the data from that day, what is the probability that the next person to visit
the store will buy 2 or more items?
5
25
16
No links

Answers

Answer:

Step-by-step explanation:

Since a total of 96 people have entered the store and 32 of them have bought 2 or more items, it is clear that the next person entering the store has a probability of 32/96 or 1/3 that he/she will buy 2 or more items.

Find an ordered pair (x,y,) that is a solution to the equation.

3x - 7 = 4

Answers

Answer: x=11/3

Step-by-step explanation:

For each inequality draw a number line and show all points that satisfy it.

Answers

0o----------------------------o5

Step-by-step explanation:

Other Questions
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