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Rudiy27
3 years ago
14

8th grade math surface area

Mathematics
1 answer:
enot [183]3 years ago
6 0

Answer:

grade 8 na po ako ahahahahabb

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if A and B together can do a piece of work in 10 days and B along can do it in 15 days, how many part of the work does A complet
anzhelika [568]

Answer:

1/5

Step-by-step explanation:

Well work can be defined as: work = rate \ *\ time

where rate=amount of work that can be done in one unit of time

let a = rate of work A does in a day

let b = rate of work B does in a day

this means that: 10a + 10b=1 where work=1 and it just means the entire job has been completed.

Since b can do it alone in 15 days, this means that: 15b=1

If we divide by 15 here, we get the equation: b=\frac{1}{15}

We can now use this definition to substitute it into the first equation we made.

10a + 10(\frac{1}{15}) = 1

Multiply the 10 and 1/15

10a+\frac{2}{3}=1

subtract 2/3 from both sides

10a=\frac{1}{3}

Now divide both sides by 10

a=\frac{1}{30}

Now multiply this by 6, since we a represents the amount of work that can be done in a day, we want to find how many parts of the work can be done by a in 6 days

6a=\frac{6}{30}

Now divide both the numerator and denominator by 6

a=\frac{1}{5}

8 0
2 years ago
How many does it means subtract or add
Elza [17]
It depends on the question, but if the question is, how many is there....
It usually means to <u><em>add</em></u>

(What is the question anyway?)

7 0
3 years ago
Read 2 more answers
Could anyone help me? this is hard i dont understand
emmainna [20.7K]

Answer:

can you please give me an example?

i will help you but give me your teacher's example

Step-by-step explanation:

let me know if it's done

3 0
3 years ago
20 POINTS Which situation shows the constant rate of change
IceJOKER [234]
The answer is A(jsjsjjsusudidjdidj)
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6) A bag contains 4 red marbles, 3 green, 5 blue. Someone offers you a game : If you pick red marble you win $4, if blue loose $
fomenos

Answer:

11

Step-by-step explanation:

i just need 11 more than ill be fine

3 0
2 years ago
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