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Dmitriy789 [7]
2 years ago
13

50 POINTSNeed help with these 3 questions. ​

Mathematics
2 answers:
emmasim [6.3K]2 years ago
6 0

Answer:

1 answer in first photo

2 answer in second photo

3 answer - in third photo

hope it will help you

mr_godi [17]2 years ago
4 0

Answer:

1st: 1/x (6mins). 2nd: 12. 1 day.

Step-by-step explanation:

1st:

One person can do a certain job in ten minutes, and another person can do the same job in fifteen minutes. How many minutes will they take to do the job together?

One person's rate:: 1/10 job/hr

Other person's rate:: 1/15 job/hr

Together rate:: 1/x job/hr

If x represents how many minutes to do the job together, then how much of the job does the slowest person do? 6 minutes.

-------------------

2nd:

Given : The sum of one-third of a number and three-fourths of the number exceeds that number by one.

To find : Which equation could be used to find the number

Let a number  = n

One third of a number = .

Three - fourths of the number  =  .

Sum of their is  exceeds that number by one.

+  = n +1.

Taking common denominator

= n+1 .

= n+1.

On subtracting n both sides.

-n = 1

Taking common denominator

= 1

= 1

On multiplying by 12 both sides

n= 12.

-------------------

3rd:

Person A can finish job in 6 days

Person B can finish job in 2 days

Person C can finish job in 3 days.

So let us present it this way.

x/6 + x/2 + x/3 = number of days

Find common denominator which is 6.

x/6 +3x/6 + 2x/6 = days

6x/6 = days

x = 1 day.

-------------------

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Simplify 3/4(1/2×-12)+4/5​
Wittaler [7]

Answer: \frac{3}{8}x-\frac{41}{5} or  \frac{3}{8}x-8\ \frac{1}{5}

Step-by-step explanation:

Given the following expression:

\frac{3}{4}(\frac{1}{2}x-12)+\frac{4}{5}

You can follow these steps in order to simplify it:

1.  You need to apply Distributive property:

=\frac{3}{8}x-9+\frac{4}{5}

2. And now you must add the like terms. Then:

=\frac{3}{8}x-\frac{41}{5}

Therefore you get the following answer:

\frac{3}{8}x-\frac{41}{5} or  \frac{3}{8}x-8\ \frac{1}{5}

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Answer:

1

Step-by-step explanation:

The absolute value of 4 is 4 and the absolute value of -3 is 3 so the difference between 4 and 3 is 1.

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3 years ago
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Step-by-step explanation:

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3 years ago
Whats the answer for 12 (2w-3)=6w
puteri [66]
12(2w-3)=6w
Distribute
24w-36=6w
Rearrange
18w=36
Divide both sides by 18
W=36/18
Final answer:
W=2
Hope I could help with the work, but give makeitnasty credit for the answer, he got it first :)
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