1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
maw [93]
3 years ago
11

Machine A can sort 840 pieces of mail per hour, and Machine B can sort 760 pieces per hour. How long will it take both machines

running at the same time to sort 12,800 pieces of mail?
A) 4 hours
B) 6 hours
C) 7 hours
D) 8 hours
Mathematics
2 answers:
julia-pushkina [17]3 years ago
6 0

Answer:

D

Step-by-step explanation:

for 8hours A=6720

for 8hours B=6080

Therefore total is 6720+6080=12800

marin [14]3 years ago
5 0

Answer: D) 8 hours

Step-by-step explanation:

Machine A: 840 an hour

Machine B: 760 an hour

h = hour

840 + 760 = 1600

In an hour, they can both sort 1600 mails.

1600h = 12800

Divide each side by 1600

h = 8

840 * 8 = 6720

760 * 8 = 6080

6720 + 6080 = 12,800

You might be interested in
Vase with a circular base exerts a force of 15 N on a table with a pressure of 700 N/m2.
MrRissso [65]

The radius of the base is 8.245 cm

Given, a vase with a circular base exerts

Pressure = 700 N/m²

Force = 15 N

Area = ?

∴ area = πr²

By finding out the area of the vase we can calculate the radius.

We know that Pressure = Force/Area

According to the equation, pressure is inversely related to area but directly related to force. Pressure rises at a constant area as the force exerted increases in strength.

therefore apply the above the formula to find out the area and radius.

700 = 15/πr²

 πr² = 15/700

 πr² = 3/140

  r² = 3/140 × 3.14

since π value is 3.14

  r² = 0.0068

   r = √0.0068

   r = 0.0824 m

   r = 0.0824 × 100

   r = 8.245 cm

we get radius as 8.245 .

Hence we get the radius of the base of the vase as 8.245 cm.

Learn more about "Force pressure and area" here-

brainly.com/question/26369337

#SPJ10

3 0
1 year ago
Clayton Road is 2.35 miles long. Wood Pike Road is 1.7 miles long. Draw a quick picture to find the combined length of Clayton R
marysya [2.9K]

Answer:

4.05 miles.

Step-by-step explanation:

See the attached diagram. (not in scale)

Let AB is the Clayton Road and its length is 2.35 miles and BC is the Wood Pike Road and it is 1.7 miles long.

So, the combined length of Clayton Road and Wood Pike Road is AC (= AB + BC)

So, the length of AC will be (2.35 +1.7) miles = 4.05 miles. (Answer)

8 0
3 years ago
X y<br> 2 -3<br> -1. 0<br> 5. 5<br> 3. 2<br> 2. 1<br><br> Is this a function?
kondaur [170]

9514 1404 393

Answer:

  no

Step-by-step explanation:

A function will not have a repeated x-value. Here, the value 2 shows up twice in the X column. The relation is not a function.

8 0
2 years ago
Translate into an algebraic expression: “a increased by b%”
tester [92]

Given:

The given statement is: a increased by b\%.

To find:

The algebraic expression for the given statement.

Solution:

We know that "+" sign is used when a value increased.

It is given that a increased by b\%. So, it can be written as:

a increased by b\%=a+b\%\text{ of }a

                                                             =a+\dfrac{b}{100}\times a

                                                             =a+\dfrac{ab}{100}

Therefore, the required algebraic expression is a+\dfrac{ab}{100}.

5 0
3 years ago
Find the largest integer $n$ for which $12^n$ evenly divides $20!$.
fredd [130]

9514 1404 393

Answer:

  n = 8

Step-by-step explanation:

12 = 2² · 3

20! = 2¹⁸ · 3⁸ · [larger primes]

The highest power of 12 that is a factor of 20! is 12^8, limited by the number of factors of 3 there are.

  n = 8

8 0
3 years ago
Read 2 more answers
Other questions:
  • What is the answer for 2/5/6
    9·1 answer
  • The volume of the figure shown is ____ M3
    13·1 answer
  • The population of a certain island has an annual growth rate of 6.9%. If you start with a poplulation of 2500 people, what would
    10·1 answer
  • Luke buys a certain brand of cereal that costs $11 per box. Luke changes to a super-saving brand of the same size. The equation
    9·2 answers
  • 20 What decimal does this model represent? Explain.
    7·1 answer
  • If f(z)== +2, what is f(4)?
    8·1 answer
  • Dave drives a truck and can only drive 35 miles per day. If he drives 1,960 miles and gets paid $18 per day, how much money will
    10·1 answer
  • Help Please
    13·2 answers
  • The total mass of raisins in a package is Normally distributed, with a mean of 520 grams and a standard deviation of 5 grams.
    14·1 answer
  • An employee puts $3,000 into a retirement fund that offers 7% interest compounded annually. The employee makes no other deposits
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!