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
love history [14]
3 years ago
14

It takes you 45 minutes to clean the fish tank and it takes your sister 30 minutes. how long does it take the two of you working

together to clean the fish tank
Mathematics
1 answer:
katen-ka-za [31]3 years ago
5 0

It takes you 45 minutes to clean the fish tank and it takes your sister 30 minutes. how long does it take the two of you working together to clean the fish tank

Answer:

My 1 minute work =\frac{1}{45}

My sisters 1 minute work =\frac{1}{30}

My and My sister's 1 minute work =\frac{1}{45}+\frac{1}{30}

                                                        =\frac{5}{90}

                                                        =\frac{1}{18}

\therefore Me and My sister will finish the work in \frac{18}{1} =18 minutes

You might be interested in
Is anyone willing to do my ixl? I have loads of work to do and I need my ixl due tonight. It’s 8th grade math and I’d appreciate
ch4aika [34]
I failed 8th grade math :/
7 0
2 years ago
Decompose these fractions 3/5 7/10
saveliy_v [14]
I think 4/5 because if you multiply you get that!!!!!!
4 0
3 years ago
Read 2 more answers
A small junior college had an enrollment of 7,843 students in the year 1990 and 8,793 students in the year 2000. Let x=0 represe
abruzzese [7]

Correct answer is: (0,7843) and (10,8793)

Solution:-

Given that a junior college has an enrollment of 7843 students in 1990 and 8793 students in year 2000.

We have to write this data as (x,y) .

Where x= years after 1990 and y=number of students enrolled.

Since in 1990, 7843 students enrolled, x = 1990-1990=0

And y=7843.

Hence one ordered pair is (0,7843).

Let us find the years after 1990 for 2000 = 2000-1990 =10

Hence another ordered pair is (10,8793).

4 0
3 years ago
When will the equation p(b)=520(0.88)^b have a value less than 100?
yulyashka [42]

Answer:

The given equation will have value less than 100 whenever the value of b is greater than 12.89

Step-by-step explanation:

For the given equation, p(b) = 520 × 0.88^{b} to have a value less than 100 we can establish inequality as:

                     p(b) < 100

         or,  520 × 0.88^{b} < 100

         or, \frac{520}{520} × 0.88^{b} < \frac{100}{520}

         or, 0.88^{b} < \frac{1}{5.2}

         or, ㏒ ( 0.88^{b} ) < ㏒  (\frac{1}{5.2})

         or, b× ㏒ 0.88 < ㏒  (\frac{1}{5.2})

         or,  \frac{log (\frac{1}{5.2}) }{log (0.88)}   <  b

         or, 12.89 < b

Hence for the equation to have value less than 100, b must be greater than 12.89.

3 0
3 years ago
Can someone answer this please?
trapecia [35]
Ccvvhejehehfrhhdgdbscsvsbgsgevbehdyeh
4 0
3 years ago
Other questions:
  • A sample of 4 is selected from a lot of 20 piston rings. How many different sample combinations are possible?
    11·1 answer
  • Solve the equation, P= a + b + c, for a.
    13·1 answer
  • Please help , will grant brainliest if correct !!
    6·1 answer
  • Solve this question 6×(11+3)
    10·2 answers
  • Evaluate (x+y)^0 For x=-3 and y=5
    9·2 answers
  • A boat that is 2 miles offshore from a lighthouse is moving parallel to the coast. The light on the lighthouse is turning at the
    10·1 answer
  • DO it for 50 it math please do it it due in 1 hour
    10·1 answer
  • Which values are solutions to the inequailty below ? check all that apply x2 &lt; 25
    9·1 answer
  • The equivalent matrices are <br> .
    12·1 answer
  • I need help with this question. This is my first time using this app so I don’t know how to include multiple images in one messa
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!