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solmaris [256]
1 year ago
12

four people each working for five hours a day can do piece of work in six days how long will two people each working for seven h

ours a day to complete the work
Mathematics
1 answer:
AnnyKZ [126]1 year ago
3 0

we have that

four people, five hours a day, six days

that represents

each people works-----> 30 hours in six days (5*6)

each people can do ----> 25% of the work (100%/4)

Divide percentage by the number of hours

25/30=5/6 % by hour

that means

Each people can do (5/6)% by hour

two people working for seven hours a day--------> represents 14 hours a day

Multiply 14 hours by (5/6)

14*(5/6)=11.67%

that means

two people in one day can do 11.67% of the work

Applying proportion

1/11.67%=x/100%

solve for x

x=100/11.67

x=8.6 days------> Round up

<h2>the answer is 9 days</h2>
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3 years ago
The fictional rocket ship Adventure is measured to be 65 m long by the ship's captain inside the rocket.When the rocket moves pa
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Answer:

a) t₀ =  1.73205 s

b) 1.0 C

Step-by-step explanation:

(A)

The time dilation (t) observed by an observer at rest relative to the time (t₀) measured by observer in motion is;

t = \frac{t_0}{\sqrt{1 - \frac{V^2}{C^2}}}

t_0 = t \sqrt{1 - \frac{V^2}{C^2}} time measured by captain

⇒ t_0 = 2.0 \sqrt{1 - \frac{0.5^2C^2}{C^2}}             V = 0.5 c

⇒ t₀ =  1.73205 s

(B)

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∵ It will be "1.0C" or just "C"

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3 years ago
4 teaspoons per 1/3 teaspoons
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Answer:

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Step-by-step explanation:

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Write the slope-intercept equation of the line parallel to 5y = 2x + 20 that goes through (-1, 3)
katen-ka-za [31]

Answer:

y = \frac{2}{5}x + 3\frac{2}{5}

Step-by-step explanation:

This line was never finished, so you finish it like this:

\frac{5y}{5} = \frac{2x + 20}{5} → y = \frac{2}{5}x + 4

3 = −⅖ + b

3\frac{2}{5} = b \\ \\ y = \frac{2}{5}x + 3\frac{2}{5}

Parallel Lines have SIMILAR <em>RATE OF CHANGES</em> [<em>SLOPES</em>], so ⅖ remains the way it is.

I am joyous to assist you anytime.

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3 years ago
A company manufactures aluminum mailboxes in the shape of a box with a half-cylinder top. The company will make 1960 mailboxes t
DiKsa [7]

Answer:

Yes

Step-by-step explanation:

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