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

Answers

Answer 1

Answer: ‘A’ can do the job = 1/15 Job/minutes
‘B’ can do the same job = 1/30 Job/minutes
Both ‘A’ & ‘B’ can do the Job = 1/15+1/30
=(2+1)/30
=3/30=1/10 job/minutes
Both A & B can do the Job in 10 minute

Answer 2

Answer: Each person works at their own rate.

1/15 and 1/30

The amount of work that they can do together is:

t/15+t/30

And we want to solve for when they can complete the job together:

t/15+t/30=1 making a common denominator

(t/15)(2/2)+t/30=1

(2t+t)/30=1 multiply both sides by 30

2t+t=30 combine like terms on left side

3t=30 divide both sides by 3

t=10

So it will take them 10 minutes to complete the job when working together.

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Determine the volume of the picture below. Please help

Answers

the answer to this question is D

Answer:

6825 in

Step-by-step explanation:

Since the shape is a composite figure, we need to break it up into 2 shapes!

Rectangle and a triangular prism

Solving for Rectangle...

Volume = Length · Width · Height

Volume = 30 · 13 · 13

Volume = 5070 in

Solving for Triangular Prism

Volume = Length · Width · Height / 2

Volume = 30 · 9 · 13 / 2

Volume = 3510/2

Volume = 1755 in

Finally, add the volumes!

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The formula represents the surface area S of a cube with side lengths x.S = 6x2
Solve for x.

Answers

Answer:

$s = 6 {x}^(2) \n {x }^(2) = (s)/(6) \n x = + - \sqrt{ (s)/(6) } \n x = ( √(s) * √(6) )/( √(6) * √(6) ) \n x = ( + - √(6s) )/(6)$

theanswer is4thoption

the answer is the last one
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A victim of phishing would most likely be contacted in which of these ways. A. In person b. By computer c. By telephone. D by fax.... I think its a but not sure

Answers

ok so basically phishing is dome online so the only logical answer would be by computer option B.

phishing is normally gettting your info
common things are like emails that say you have won
or emails from people claming to be a nigerian prince recently having come into posession of a large fortune...

phishing scams work best when the peson doing the scam is anonymus
internet is great
in person is terrible, you know who it is
internet is on computer
telephone, you can be tricked, but people are more likely to click on email than to be tricked by phone stuff
fax isn't as much

B is answer

What is the area of length being 32 and width 24