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
OverLord2011 [107]
3 years ago
12

If Jeff washes his car in 6 minutes and bob washes the same car in 8 minutes. How long does it take both of them to wash the sam

e car?
Mathematics
2 answers:
Tatiana [17]3 years ago
8 0

Answer:

3 3/7 or 24/7 mins

Step-by-step explanation:

Let total job = X

Jeff's rate = X/6

Bob's rate = X/8

Combined rate = X/6 + X/8

(4X × 3X)/24 = 7X/24

7X/24 = X/T

T = X ÷ (7X/24)

T = X × (24/7X)

T = 24/7 mins

Shortcut:

T = product of individual times/sum of individual times

T = (6×8)/(6+8)

T = 48/14

T = 24/7

T = 3 3/7 mins

pishuonlain [190]3 years ago
4 0

Answer:

3 3/7 minutes or 3.4mins

Step-by-step explanation:

If Jeff washed husband car in 6 minutes and Bob washed the same car in 8 minutes , the time taken by both of them in washing the car ?

If Jeff washed the car in 6 minutes , in one minute, Jeff’s work = 1/6

If bob washed in 8mins, in one minute, bob’s work = 1/8

Add both together

1/6 + 1/8

Lcm of 6 and 8 Is 24

Divide the Lcm by the denominators and multiply the results by the numerator

We have 4+3 /24

7/24

Therefore time taken by both of them in Washing is 24/7

= 3 3/7 minutes 0r 3.4mins

You might be interested in
The legs of a 45 45 90 triangle have a length of 8 units what is the length of the hypotenous
Crank

Answer:

11.31 units

Step-by-step explanation:

a^2 + b^2 = c^2

8^2 + 8^2 = c^2

64 + 64 = c^2

128 = c^2

Opposite of exponents is square roots, and we need to get rid of that exponent in c^2, meaning we find the square root.

\sqrt{128\\} \\\\ = c

c = 11.31 units

3 0
3 years ago
Which is equivalent to sin-1(–0.4)? Round your answer to the nearest hundredth of a radian.
strojnjashka [21]

Answer:

-0.41 radians

Step-by-step explanation

(Credit goes to calculista)

let

A---> the angle

if sin A=-0.4

then 

A=sin-1(-0.4)

using a calculator

A=-23.578°----> the angle A belong to the IV quadrant

convert to radians

if pi radians--]----> 180°

x--------> -23.578°

x=-23.578*pi/180----> x=-0.41 radians

Read more on Brainly.com - brainly.com/question/9675799#readmore

4 0
3 years ago
10 points!!!!!!!!!!!!!!
Murrr4er [49]

Answer:

B) x^2 - 3/ 3x

Step-by-step explanation:

As, f(x) - g(x) = x/3 - 1/x

So, x^2/ 3x - 3/ 3x

= x^2 - 3/ 3x

7 0
3 years ago
Read 2 more answers
To find the coordinates of point L, the midpoint of JK, the equation M = can be used. What are the coordinates of point L? L(1,
anygoal [31]
Since we are already given with the formula to solve for the coordinates of point L, all we have to do is to perform the necessary operation in the item. The formula for the coordinates of the midpoint is,                    M = ((5 + 1) / 2 , (3 - 7) / 2)performing the operation,                   M = (3, -2)Thus, the coordinates of point L are (3,-2).
 Read more on Brainly - brainly.com/sf/question/2881337
8 0
3 years ago
Read 2 more answers
If A= [-5,7] and B= [6,10], then find A u B
lesantik [10]

Answer:

\large\boxed{A\ \cup\ B=[-5,\ 10]}

Step-by-step explanation:

Look at the picture.

The union of two sets A and B (A ∪ B) is the set of elements which are in A, in B, or in both A and B

7 0
3 years ago
Other questions:
  • What is the product of 4 × 40?
    6·2 answers
  • Reduce the fraction: x-y/x^2-1 times x-1/x^2-y^2
    7·2 answers
  • A babysitter makes $7.50 per hour.
    8·1 answer
  • Help!! is it $486?
    9·2 answers
  • Curtis threw 15 darts at a dartboard.40% of his darts hit the bull’s eye.how many darts not hit the bulls eye?
    7·1 answer
  • A) A graph is drawn below.<br> Explain how you know that y is not directly proportional to x.
    5·1 answer
  • A dining set is priced at $785. If the sales tax is 7 percent, what is the cost to purchase the dining set? Round to the nearest
    6·2 answers
  • An equation that models the perimeter of the rectangle 2w+4w=36
    13·1 answer
  • 6. How much more is (6.48 x 10^5) than (3.2 x 10^2​
    15·2 answers
  • Hello can somedy help me please <br> thank you in advance
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!