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
hodyreva [135]
3 years ago
9

It takes Jimmy 11 minutes to sweep a porch.

Mathematics
2 answers:
Katena32 [7]3 years ago
7 0

Answer:

5.96 min

Step-by-step explanation:

Jimmy's rate, J = 11 min for whole porch

Amy's rate, A = 13 min for whole porch

to find the combined rate, C,

the reciprocal of the combined rate equals the sum of the reciprocals of each individual rate. i.e

1/C = 1/J + 1/A

substituting the above values

1/C = 1/11 + 1/13  (convert right side to same denominator)

1/C = 13 / (11 x 13)  + 11 / (11 x 13)

1/C = 13 /143 + 11 /143

1/C = (13 + 11) /143

1/C = 24 /143   (taking reciprocal of both sides)

C = 143 / 24 = 5.96 min

lara31 [8.8K]3 years ago
4 0
Like 6 minutes or somthin
You might be interested in
(-11/20) ÷ (-4/16) =
makvit [3.9K]

Answer:

2.2

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
how many ways can you order your favorite dessert from a menu of 8? A.) 6 B.) 40,320 C.) 6720 D.) 336​
Radda [10]

Can you tell me what do you mean exactly by menu of 8, so i can help you.

8 0
3 years ago
8 + 8( 8 - n ) = 40 + 8n
Ierofanga [76]

n=2

8+8(8-n)=40+8n (distribute 8 through the parenthesis)

8+64-8n=40-8n (add the numbers)

<em>72-</em>8n=40+8n (move the variable to the left side and change its sign)

<em>72</em><em>-</em>8n+8n=40

-8n+8n=40<em>-72</em> (connect like terms)

-16n = -32 (divide both sides by -16)

<u><em>n=2</em></u>




7 0
3 years ago
Read 2 more answers
List the factors in decimals in order from least to greatest 0.5 3/16 0.75. 5/48
suter [353]
5/48
3/16
0.5
0.75

This is listen in least to greatest...
6 0
3 years ago
3m=5(m+3)-3 what is m equal to?
elena-s [515]

3m=5m+15-3

3m-5m=12

- 2m=12

m=-6

<h2><u>Mark as Brainliest</u></h2>

4 0
3 years ago
Read 2 more answers
Other questions:
  • Write the equation of this circle in standard form
    8·1 answer
  • A/-2-5=0<br> A=-10;a=0;a=10
    13·1 answer
  • Factorise the following.<br> 49g^2 - 36h^2 - 28g - 24h
    6·1 answer
  • Simplify 3x + 7(3x + 2) + 4x – 5
    11·1 answer
  • What is the value of 8(2.3+x) when x=7
    9·2 answers
  • If you are finding the area of a triangle and there are three sides
    12·1 answer
  • PLEASE HELP me!!! can give brainliest!
    9·1 answer
  • Complete the square for the function y=x²+4x​
    8·1 answer
  • PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!
    15·2 answers
  • Need answer for this
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!