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
lawyer [7]
3 years ago
11

1. If one painter can paint a house in 4 days and another painter can paint a house in 7 days, how many days will it take them w

orking together?
2. A car and a motorcycle both leave at the same point at the same time and travel in the same direction. The car travels at an average rate of 55 mph and the motorcycle travels at an average rate of 40 mph. How long will it take before the vehicles are 25 miles apart?
Mathematics
1 answer:
enyata [817]3 years ago
6 0

9514 1404 393

Answer:

  1. 2 6/11 days
  2. 1 2/3 hours

Step-by-step explanation:

1. Add the rates in terms of houses per day.

  1/4 + 1/7 = (7+4)/28 = 11/28

Then the time required in terms of days per house is the reciprocal of this:

  28/11 = 2 6/11 . . . . days to paint a house, working together

__

2. Each hour, the vehicles separate by 55 -40 = 15 miles. Then the time required for a separation of 25 miles is ...

  time = distance/speed = (25 mi)/(15 mi/h_ = 5/3 h = 1 2/3 h

The vehicles will be separated by 25 miles after 1 2/3 hours.

You might be interested in
Which expression is equivalent 1/4 (4/7x - 1/2) - 3/8
Rainbow [258]

Answer:

d

Step-by-step explanation

boys are strong like king kong,girls are weak chuck them in the creak

5 0
2 years ago
Alaine has 1 gallon of paint. She is going to pour it into a paint tray that measures 10 inches wide, 12 inches long, and 5 cm d
Alona [7]
She<span> is </span>going<span> to </span>pour<span> it </span>into<span> a </span>paint tray<span> that </span>measures 10 inches wide<span>, </span>12 inches long, and5 cm deep. (1 gallon<span> =... ... (</span>1 gallon<span> = </span>231 in3<span>, </span>1 inch<span> = </span>2.54 cm<span>) Which of the </span>following scenarios will<span>happen? a. The </span>paint will<span> not fill it

</span>
8 0
3 years ago
HELP ME PLS!!! I WILL GIVE BRAINIEST
Stells [14]

Answer:

Should be 2.94 inches.

Step-by-step explanation:

did the mafs

5 0
2 years ago
Which rule represents the translation of hexagon D'E'F'G'H'I' ?
Sveta_85 [38]

Answer:

C (X,Y)->(X-4,×-5) I would say bro

3 0
3 years ago
Add the product of 2 and 5 to the product of 9 and 8
Lerok [7]

Answer:

82

Step-by-step explanation:

2*5 + 9*8 = 10 + 72 = 82

4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the answer to this problem
    15·1 answer
  • Which one of the following groups of numbers includes all prime numbers? A. 7, 17, 63, 67 B. 3, 11, 23, 31 C. 1, 3, 11, 23 D. 2,
    12·2 answers
  • The city stadium holds 56,389 people. The county stadium holds 24,507 more people than the city stadium does.
    8·1 answer
  • The distribution of math SAT scores is normally distributed with a mean of 500 and a standard deviation of 90.
    13·1 answer
  • What is -8r-8+5 simplyfied
    14·1 answer
  • Determine how long it will take an airplane to travel 2000 miles if it flies 200 miles per hour, 400 miles per hour, and 600 mil
    11·1 answer
  • A man receives an annual increase of #30000 and after a period of 10 years service, the man has the salary of #1014. Find his in
    5·1 answer
  • Ahab has a savings account with $4,000 in it that earns 7% simple
    15·1 answer
  • There is a study on exercise and health: a group of women who have been exercising regularly for 5 years are grouped and given a
    7·2 answers
  • Explain what a positive and negative number means in this situation
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!