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

5 0

3 years ago

PLEASE HELP!!! I REALLY NEED SOMEONE TO ANSWER THIS I HAVE ATTACHED A PICTURE

earnstyle [38]

Answer:

2.3 hours, or 2 hours & 18 minutes

Step-by-step explanation:

we are trying to find h when d is 56.68, so I replaced d with 56.68

$56.68=24.6h+0.1\\$

subtract 0.1 from both sides

$56.58=24.6h$

divide both sides by 24.6

$2.3=h$

7 0

3 years ago

What is the distance between -6 and -3 on a number line?

Ira Lisetskai [31]

I think it's 3 but idk I'm not good at math

7 0

3 years ago

Read 2 more answers