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
emmasim [6.3K]
2 years ago
12

2) Working alone, Rob can dig a 10 ft by 10 ft hole in ten hours. Shayna can dig the same hole in seven hours. Find how long it

would take them if they worked together.​
Mathematics
1 answer:
Free_Kalibri [48]2 years ago
8 0

rob can dig 1/10ft in one hour

Shayna can dig 1/7ft in one our

together they can dig

1/10+1/7

(7+10)/70 in one hour

17/70

in for hours they can dig

17/70×4

68/70

the left work is 2/70

in 60 minutes they can dig 17/70

1/70 work can be done in 60 minutes/17

2/70 work can be done in 60/17×2 minutes

7.088 minutes

for the entire work they take 4hours and 7 minutes

You might be interested in
Solve each equation by taking square roots<br> 9v^2=25
lisov135 [29]
<span>9v^2=25
v^2 = 25/9
v^2 = (5/3)^2
v =  + 5/3 and v = -5/3

hope it helps</span>
3 0
2 years ago
What is the length of z ?
bulgar [2K]
5 :::::::::::::)djdjfjs
4 0
3 years ago
137x8 multiply with expanded form please help 10 ponte for your help please help!
Step2247 [10]

Answer: maybe 20

Step-by-step explanation:

or find it out yourself

3 0
2 years ago
Simplify 4z2 + z2 + 6a.
podryga [215]
5z^2 + 6a is the simplified expression
5 0
3 years ago
Bro<br> I’m lazy and I don’t wanna do it if someone can do it it would mean a lot
NARA [144]

Answer:

Option 2.

Step-by-step explanation:

X is a number greater than the equality. Therefore the arrow will go to the bigger side. It also is not equal to the equality hence the cirle is open.

3 0
3 years ago
Read 2 more answers
Other questions:
  • If the recommended adult dosage for a drug is D (in mg), then to determine the appropriate dosage c for a child of age a, pharma
    12·1 answer
  • Tiffany has taken out a loan with a stated interest rate of 8.145%. How much greater will Tiffany’s effective interest rate be i
    9·2 answers
  • What two numbers give a product of 85
    5·2 answers
  • Fran's store spent $64,000 on expenses last year. Rent for the store was 35% of those expenses. How much did Fran spend on rent?
    12·1 answer
  • In the afternoon, a television station reported the temperature as 3.7°F . That evening, they reported the temperature as −1.5°F
    7·2 answers
  • I am part of a whole. I am greater than three fourths but less than nine tenths. I am a decimal with a 3 in its hundredth place.
    13·2 answers
  • Solve algebraically 16 = 64 - 32t
    8·2 answers
  • How do you calculate the are of a circle with a radius of 12 ft<br> PLEASE HELP !
    15·2 answers
  • Please help me!!!!!!!!!
    6·1 answer
  • A video receives -16 points and 33 points in one day. How many members voted?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!