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
Andru [333]
3 years ago
15

Sally can paint a room in 7 hours while it takes Steve 6 hours to paint the same room. How long would it take them to paint the

room if they worked together.
Mathematics
1 answer:
mash [69]3 years ago
5 0
Sally paints at a rate of 1/7th room / hour

Steve paints at a rate of 1/6th room / hour

If they both painted together, they would paint 1/7 + 1/6 = 13/42 room/hour

so to paint the whole room, it would take 1/(13/42) = 42/13 =
<u>
3.23 hours (3 significant figures)</u>
You might be interested in
Area of 135 square meters and the length is 15 meters
Eddi Din [679]
To answer take 135/15 and you get 9, because to get are you need length times width. Hope that made sense.

5 0
3 years ago
Whats the least common denominator of the expression g to the second power over 9 minus g to the second power plus 14 plus g ove
creativ13 [48]

Answer:

The least common denominator of the expression is 72g.

Step-by-step explanation:

First, let us write the expression out mathematically

\frac{g^{2} }{9} - g^{2} + 14 + \frac{g}{24g} + 8g^{2}

The denominators in the expression are 9 and 24g. To find the least common denominator, we will determine the least common multiple of the numbers (9 and 24) first, and then find the least common multiple of the result and g (since it is the only letter).

Multiples of 9 = 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, ...

Multiples of 24 = 24, 48, 72, 96, ...

The least common multiple of 9 and 24 is 72.

Then, the least common multiple of 72 and g is 72g

Hence, the least common denominator of the expression is 72g.

7 0
3 years ago
A regular size bag of Skittles costs $1.24 and contains 62 candies. How much does EACH candy cost?
tankabanditka [31]

Answer:

2 cents or $.02

Step-by-step explanation:

1.24/62=.02

6 0
3 years ago
I NEED THE ANSWER RN LIKE RN
Zarrin [17]

Answer:

2.5 Hours

Step-by-step explanation:

150 is the largest number up there. So if you divide 150 by the number of minutes in a hour (which is 60), you would get 2.5 hours.

Hope this helps!

4 0
3 years ago
Read 2 more answers
Find the surface area of the shape.
Firlakuza [10]

Answer:

268 m²

Step-by-step explanation:

8x26=208

3x10x2=60

208+60=268

7 0
3 years ago
Other questions:
  • Angle in semi circle is 90<br>​
    11·1 answer
  • Solve the inequality. 9n ≤ –27
    9·1 answer
  • At a school. Number of boys:number of girls=11:9. There are 124 more boys than girl. Work out the total number of students at th
    11·1 answer
  • What is the answer when you round 4186.666666666667 to nearst hundredth.
    15·1 answer
  • <img src="https://tex.z-dn.net/?f=p%28x%29%3Dx%5E%7B3%7D%2B7x%5E%7B2%7D%20-4x-28" id="TexFormula1" title="p(x)=x^{3}+7x^{2} -4x-
    11·1 answer
  • Use the distributive property to simplify this expression 1/2(4x+2) + 2x +3
    10·1 answer
  • Line JK passes through points J(–3, 11) and K(1, –3). What is the equation of line JK in standard form?
    14·1 answer
  • Please help me with this Arithmetic Sequences and Series Question:
    15·1 answer
  • − 2 3 y − 3 5 x 2 9 − 4 5 x 1 3 y Let x = 5 and y = 3. − 2 3 (3) − 3 5 (5) 2 9 − 4 5 (5) 1 3 (3) = −2 − 3 2 9 − 4 1 = −77 9 Use
    6·1 answer
  • Describe how to use the formula C = StartFraction 5 Over 9 EndFraction (F minus 32) to find the temperature in degrees Celsius i
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!