three postal workers can sort a stack of mail in 30 minutes, 30 minutes, and 60 minutes, respectively. find how long it takes them to sort the mail if all three work together.

Answers

Answer 1

Answer:

it will take about 1/3 of the time (10 minutes)

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

t/30+t/30+t/60=1

2t/60+2t/60+t/60=1

5t/60=1

5t=60

t=12 minutes


Related Questions

The "h" in the lateral area formula, L = Ph, stands for

Answers

P= perimeter of the base P=(2 x L) + (2 x w) h= height. Total Surface area: S= Ph + 2B.

Determine whether each graph is the graph of a function
Write YES or NO
Please Help

Answers

Answer:

yes no yes. I was a little skeptical about 18 but nevermind

I will mark you as the brainiest if you get this correct Thx so much xxx

Answers

Answer:

22.7

Step-by-step explanation:

9³-8*6 = 729-48= 681

(8²-4) / 2 = 30

681/30 = 22.7

Answer:

[tex] \huge \boxed{ \blue{ \text{22.7}}}[/tex]

Step-by-step explanation:

to understand thisyou need to know about:order of PEMDASgiven:[tex] \frac{ {9}^{3} - 8 \times 6 }{ ({8}^{2} - 4 ) \div 2} [/tex]

let's solve:

[tex]step - 1 : define[/tex]

[tex] \frac{ {9}^{3} - 8 \times 6 }{ ({8}^{2} - 4 ) \div 2} [/tex]

[tex]step - 2 : simplify[/tex]

[tex] \frac{ {9}^{3} - 8 \times 6 }{ ({8}^{2} - 4 ) \div 2} [/tex][tex] \frac{729 - 8 \times 6 }{ (64 - 4 ) \div 2} [/tex][tex] \frac{721 -48}{60 \div 2} [/tex][tex] \frac{681}{30} [/tex][tex]22.7[/tex]

Which relation is a function?

{(3, 4), (2, 4), (5, 1), (3, 5)}

{(1, 4), (1, 3), (1, 2), (1, 1)}

{(1, 3), (2, 6), (3, 9), (4, 12)}

{(3, 4), (3, 3), (1, 2), (1, 5)}

Answers

Answer:

its 1

Step-by-step explanation:

look it up big dig daddy

the third one.

explanation:

for it to be a function an x-value can never be the same. so therefore it’s the 3rd one.

4.
Which item can be given as a statement in
a proof?
A Given
B Definition of Complementary Angles
C m 1 m2 - 180°
D Transitive Property of Equality

Answers

I would say it’s A....

Need help ASAP !!please

Answers

Answer:

:)

Step-by-step explanation:

Drew is 3 years older than his brother, Jimmy. The sum of the​

brothers’ ages is 21.​

Answers

Answer:

jimmy is 18

Step-by-step explanation:

3+18=21 Hope this helps!

Answer:

Drew is 12 and Jimmy is 9

Step-by-step explanation:

12+9=21

;-;

why do we get lonely also
what is 33/6 coverted to a mixed number

Answers

idek

Answer: 5 3/6 or 5 1/2

Q1 Expand the following brackets
(a) 5(y + 3) (b) 4(a + 2)
(c) 8(W + 10)
(
(e) 9(s - 1)
(f) 2(8-t)
(g) 7(4 + h)
(i) 4(3y + 2)
6) 5(2p - 1)
(k) 3(7a +2)​

Answers

Answer:

[tex]a)5y + 15 \\ b)4a + 8 \\ c)8w + 80 \\ e)9s - 9 \\ \: f)16 - 2t \\ \: g)28 + 7h \\ \: i)12y + 8 \\ \: 6)10p - 5 \: \\ k)21a + 6[/tex]

[tex]plzz \: \: mark \: as \: brainliest[/tex]

factor 2x^2+5x+3
plz explain your answer

Answers

(x+1)(2x+3)
Hope this helps you

Find DC (Image Below)

Answers

Answer:

79239729379249

Step-by-step explanation:

your aswer is 284389300 oo

A movie theater seating is arranged with 15 seats in the front row, 14 seats in the middle row, and 26 seats in the back row. The ticket-taker randomly assigns seats to people as they enter the theater. What is the probability that the first person who enters the theater will be assigned a seat in the front row? Ratio Answer in simplest form.

Answers

Answer:

3/11

Step-by-step explanation:

i did this question it 3/11

Please help I’ll mark you brainly!

Answers

9514 1404 393

Answer:

  A.  f(x) = (x -3)² -1

  B.  vertex: (3, -1); axis of symmetry: x=3; x-intercepts: {2, 4}; y-intercept: 8

  C.  see attached for a graph

Step-by-step explanation:

A. Put the function in vertex form by completing the square. Start by putting parentheses around the terms containing x.

  f(x) = (x² -6x) +8

Now, identify the coefficient of x (-6) and square half of that. (-6/2)² = 9. Add this value inside parentheses, and subtract this value outside parentheses.

  f(x) = (x² -6x +9) +8 -9

Rewrite the trinomial in parentheses as a square. The constant in the binomial will be the value you squared in the previous step.

  f(x) = (x -3)² -1 . . . . . vertex form; a(x -h)²+k for vertex (h, k)

__

B. The vertex and the axis of symmetry can be read from the equation. Here, the vertex is (3, -1). The axis of symmetry is the vertical line through the vertex: x = 3. The x-intercepts are found by solving f(x) = 0.

  f(x) = 0

  (x -3)² -1 = 0

  (x -3)² = 1 . . . . . add the opposite of the 'k' value

  x -3 = ±√1 . . . . take the square root. We need both signs.

  x = 3 ± 1 . . . . . add 3 to get x by itself. These are the x-intercepts.

  x = 3-1 = 2  and  x = 3+1 = 4

The x-intercepts are 2 and 4, points (2, 0) and (4, 0).

The y-intercept is the value of f(0). It is the constant in the original form of the function. f(0) = 8 . . . . y-intercept

__

C. The graph is attached. The various points above are marked, and the axis of symmetry is shown.

How long will it take for a certain population of fish to triple if the relative growth rate is 45% per year?

Answers

Answer:

n = 3 Year (Approx)

Step-by-step explanation:

Given:

Growth rate (r) = 45% = 0.45

Find:

Number of year for 3 times of population (n)

Computation:

Assume;

Current population = P

So,

New population = 3P

A = p(1+r)ⁿ

3P = P(1+0.45)ⁿ

3 = (1.45)ⁿ

n = 2.96 year

n = 3 Year (Approx)

Simplify the expression by combining all the like terms 6+2x+5+4x

Answers

Answer:

6x+11

Step-by-step explanation:

6+2x+5+4x

4x+2x+6+5

(4x+2x)+(6+5)

6x+11

Answer:

6x +11

Step-by-step explanation:

group like terms (terms with the same variable and powers) together

(2x+4x) + (6+5)

6x +11

PLEASE HELP ASAP ILL GIVE U A LOT OF POINTS AND BRAINLIEST

Answers

Answer: a=1.5+1

Step-by-step explanation:

b jvgfcd vbkbhyg

Answer:

15x

Step-by-step explanation:

Help pls btw I will give brainly

Answers

Answer:

[tex]\frac{3}{8}[/tex] feet²

Step-by-step explanation:

The area ( A) is calculated as

A = length × width

   = [tex]\frac{3}{4}[/tex] × [tex]\frac{1}{2}[/tex] ← multiply numerators/ denominators

   = [tex]\frac{3(1)}{4(2)}[/tex]

   = [tex]\frac{3}{8}[/tex]

Is the triangle a right triangle?use the Pythagorean theorem and its converse to explain why or why not.

Answers

Answer:

i believe it is f

Step-by-step explanation:

x =

9
7
4
LOOK AT IMAGE

Answers

thy answer is 4
need character limit

Ms. Johnson is drawing a floor plan of her square room that has an area of 100 ft2. She is using the scale of 0.5 inch =2 ft. What is the length of her room on the floor plan?

Answers

Answer:

it's 2.5 inches cool profile pic to

Step-by-step explanation:

please help me someone with this problem

Answers

I would help you but the picture is blurry

Which of the following decimals has the least value? 0.3; 0.029; 0.003; 0.01

Explain your work

Answers

it’s 0.003 the farthest it’s away from the decimal point the smallest it is
it’s is 0.003 because it is the furthest from 0

A coin is tossed 30 times. The experimental probability of the coin showing tails is 40%. How many times did the coin show heads?

Answers

Answer: 10 i just had this question

ep-by-step explanation:

Answer:

18

Step-by-step explanation:

Just find the other 60 percent of 30 so just multiply it by 6/10 which is 18

Solve the expression. xy + x When x= -10 y= -5

Answer choices
-60
40
-40
60

Answers

Answer:

40

Step-by-step explanation:

xy + x         x= -10    y= -5

Plug in the given values and remember that multiplying two negative numbers makes the product positive.

(-10)(-5) + -10

50 - 10

40

Answer:

2. 40

all you have to do is fill in the letters with their values.

Step-by-step explanation:

xy + x = ?

-10 (-5) + (-10) = ?

50 + (-10)= 40

40 = 40

Hope this helps please mark brainliest:)!

A bicycle shop is selling $500 bikes at 10% off. If the sales tax is 7%, how much will the bike cost?

Answers

Answer:

The bike will cost $481.50

because

10% off of 500 is 50

so 500 - 50 = 450

Now include the sales tax which is

450 * 0.07 = 31.5

Now add the two totals to get

$481.50



A cylinder has a base radius of 10m a height of 18m. What is its volume in cubic

m, to the nearest tenths place?

Answers

Answer:

5656 m^3

Step-by-step explanation:

Volume of a cylinder can be calculated using below formula

V = πr²h

Where

h= height =18m

r= radius= radius = 10m

If we substitute the values we have

V = π × (10)²× 18

= 5655.6 m^3

= 5656 m^3

Answer: 5654.9

Step-by-step explanation:

Help i dont know the answer

Answers

Answer:

25

Step-by-step explanation:

In her first 5 days, she reads 80 pages. That means that per day, she reads 16 pages. Then, she had 400 pages left, since 480-80 = 400.

So, you divide 400/16 = 25 days.

Hi if if if if hccjhckvkbbonono uf

A fish tank is a rectangular prism that is 30 inches long, 24 inches deep, and 18 inches high. How much water
will it hold:
a. In cubic inches? (2 marks)
b. In cubic feet?​

Answers

12960 in^3
1080 ft^3
Multiply 30,24,and 18 to get 12960 then divide by 12 to get the feet 1080.

Find profit percentage when S.P. of the article is Rs. 560 and C.P. is Rs. 500,with process ​

Answers

Answer:

first find the profit

profit % is the profit over CP times 100

Clear
The perimeter of a regular octagon is 88 mm. How long is each side?​

Answers

Answer:

11 mm

Step-by-step explanation:

An octagon has 8 sides. This mean that we do 88 divided by 8 to get the length of each side which is 11 mm.

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