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
lys-0071 [83]
3 years ago
15

Tiana can clear a football field of debris in 3 hours. Jacob can clear the same field in 2 hours. If they decide to clear the fi

eld together, how long will it take them?
Mathematics
1 answer:
Marianna [84]3 years ago
8 0
You must find the relative rates of both workers...

T=f/3 and J=f/2  so if they work together to clear the field then:

ft/3+ft/2=f  make all terms have a common denominator of 6

(2/2)(ft/3)+(3/3)(ft/2)=(6/6)f

2ft/6+3ft/6=6f/6  multiply both sides by 6

2ft+3ft=6f  divide both sides by f

2t+3t=6  combine like terms on left side

5t=6  divide both sides by 5

t=6/5 hr

t=1 1/5 hr

t=1 hr 12 min
You might be interested in
The width of a rectangle is 4 feet and the diagonal length of he rectangle is 13 feet what is the measurement is the closest to
AURORKA [14]

Answer:

The length is APPROXIMATELY equal to 12.4.

Step-by-step explanation:

Use the converse of the Pythagorean Theorem (a^{2}+b^{2}=c^{2} [where "c" is both the longest side and the hypotenuse]) since a rectangle's diagonals will always cut it into two right triangles:

13^{2} = 169

4^{2} =16

169-16=153.

\sqrt{153} ≈ 12

or

\sqrt{153}=12.36931688

or if the problem has to be exact (using radicals)

3*\sqrt{17}

I hope this helps ;)

8 0
2 years ago
I need help with this questions
SSSSS [86.1K]

Answer:

<u>Picture 1</u>

Your choice C is correct

  • (x - (-2))² + (y - 9)² = 5² ⇒
  • (x + 2)² + (y - 9)² = 25

<u>Picture 2</u>

  • (x + 5)² + (y - 6)² = 36
  • (x - (-5))² + (y - 6)² = 6²
  • r = 6, (h, k) = (-5, 6)

Correct choice is C

<u>Picture 3</u>

  • (x + 5)² + (y + 2)² = 81
  • (x - (-5))² + (y - (-2))² = 9²
  • r = 9, (h, k) = (-5, -2)

Correct choice is C

6 0
3 years ago
The 102nd floor of the sears tower in chicago is the highest occupied floor. it is 1,431 feet above the ground. how many yards a
melamori03 [73]
1 foot = \frac{1}{3} yard

1431 ÷ 3 = 477 yards
6 0
3 years ago
(SAT Prep) How many distinct triangles are for which the lengths of the sides are 5,9 and n, where n is an integer and 10
Nana76 [90]
The answer is C because you can have a triangle with 5,9,n   5,10,n   9,10,n   and 5,10,9

The reason why is because the sum of two sides is always larger than the value of the third side.

I hope that this helps.

7 0
3 years ago
Read 2 more answers
Luis distributes 49 roses equally among 7 friends. Then, 3 of his friends combine the roses they received to make a bouquet. How
antoniya [11.8K]

Answer:

21 roses

Step-by-step explanation:

49 / 7 = 7

Each friend got 7 roses.

7 x 3 = 21

3 friends combine their roses together, making a bouquet of 21 roses.

3 0
3 years ago
Other questions:
  • Mike wants to make meatloaf. His recipe uses a total of 8 lbs of meat. If he uses a 3 to 1 ratio of beef to pork how much pork w
    7·2 answers
  • Apply the rules for order of operations to simplify (2− 1) + 32 ÷ 3. A. 6 B. 10/3 C. 3 D. 4
    14·2 answers
  • 50% of all the cakes jenny baked that week were party cakes, 1/5 were fruits cake and the remainder were sponge cake. what is th
    13·2 answers
  • What is the product of (5^-1)(5^-3)
    14·2 answers
  • Kayla plans to swim 2 laps per minute until she swims 12 laps. She figures this will take 1/6 minute. Which is NOT a reason why
    6·2 answers
  • Please help me!!!!!!!!!!!!
    10·1 answer
  • How many parallel and perpendicular lines, are there in a trapezium?
    15·1 answer
  • I need help in this question :(
    13·1 answer
  • A square is attached to a semicircle to make the figure shown in the diagram below .
    15·1 answer
  • 432 oranges are to be divided equally among a number of people. If there had been four people less, the share of each would have
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!