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snow_lady [41]
3 years ago
8

Janet an experienced shipping clerk can fill a certain order in 5 hours . Tom a new clerk needs 8 hours to do the same job. work

ing together how long will it take them to fill the order
Mathematics
1 answer:
aksik [14]3 years ago
7 0

Janet can fill a certain order in 5 hours, therefore she performs 1/5 of the order within 1 hour.

Tom needs 8 hours to do the same job, therefore he performs 1/8 of the order within 1 hour.

Working together, they make 1/5 + 1/8 orders within 1 hour.

Let <em>t</em> mean the number of hours they need. Then we have equation:

\left(\dfrac{1}{5}+\dfrac{1}{8}\right)t=1\\\\_{\text{use}\ \frac{a}{b}+\frac{c}{d}=\frac{ad+bc}{bd}}\\\\\dfrac{(1)(8)+(1)(5)}{(5)(8)}t=1\\\\\dfrac{8+5}{40}t=1\\\\\dfrac{13}{40}t=1\ \ \ \ |\text{multiply both sides by 40}\\\\13t=40\ \ \ \ |\text{divide both sides by 13}\\\\t=\dfrac{40}{13}\\\\t=3\dfrac{1}{13}\\\\Answer:\ 3\dfrac{1}{13}h=3h\ \dfrac{60}{13}min\approx3h\ 5min

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Find the area. The figure is not drawn to scale
poizon [28]

Answer:

96 square inches.

Step-by-step explanation:

From given picture we see that

BC=8 in

AD=10 in

Given that

AD=AB

Then AB=10 in

Apply Pythagorean theorem in triangle ABC to find AC

(hypotenuse)^2=(base)^2+(perpendicular)^2

(AB)^2=(BC)^2+(AC)^2

(10)^2=(8)^2+(AC)^2

100=64+(AC)^2

100-64=(AC)^2

36=(AC)^2

take square root

6=AC

Then area of triangle ABC =\frac{1}{2}\left(base\right)\left(altitude\right)

=\frac{1}{2}\left(8\right)\left(6\right)=24

There are total 4 congruent triangles.

Then total area of the given figure = 4(24)=96 square inches.

7 0
3 years ago
Using 6 as a denominator, what fraction completes the following equation: 1 − 2/12 = ? a.4/6 c. 3/6 b.5/6 d. 2/6
svlad2 [7]

Answer:

5/6

Step-by-step explanation:

1-\frac{2}{12}=1-\frac{1}{6}=\frac{1*6}{1*6}-\frac{1}{6}\\\\=\frac{6}{6}-\frac{1}{6}=\frac{6-1}{6}=\frac{5}{6}

8 0
3 years ago
PLZ MEEEEE TTTTVVVTTTT
GarryVolchara [31]

Step-by-step explanation:

The total number of workers given = 60

16 + 7 + 18 + 12 + p + 2 = 60

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p = 60 - 55 = 5

4 0
3 years ago
Show work plz hahaha
Tanya [424]
<h2>Answer:</h2>

<u>The balance after 21 months is  </u><u>$9960</u><u>.</u>

<h2>Step-by-step explanation:</h2>

Let a₁ = 14760, a₂ = 14520, and a₂₁ be the balance after 21 months:

So we apply the given values to get the missing values:

First, we get the common difference, That is,

d = a₂ - a₁

d = 14520 - 14760

d = -240

So, we substitute the value of common difference and the known values,

a₂₁ = a₁ + (n-1)d

a₂₁ = 14760 + (21-1)(-240) 

a₂₁ = 14760 + (20)(-240) 

a₂₁ = 14760+(-4800)

a₂₁ = 9960

Therefore, the balance after 21 months is  $9960.

4 0
3 years ago
A net for a cylindrical object will consist of which shapes?
shtirl [24]
I'd say two circles and a rectangle.
4 0
3 years ago
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