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NISA [10]
3 years ago
9

Find the area of the regular 18-gon with Radius is 7 mm

Mathematics
1 answer:
miskamm [114]3 years ago
4 0
Copie the link

Jajaj Josh’s but link.bio hope that helps
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The first gardener can finish the job in 6 hours, and the second gardener can do the same job in 7 hours. How long it will take
marissa [1.9K]

If the first gardener can finish the job in 6 hours, it means that every hour he completes 1/6 of the job.

By the same logic, the second gardener completes 1/7 of the job per hour.

So, if they work together, they complete

\dfrac{1}{6}+\dfrac{1}{7}=\dfrac{7+6}{42}=\dfrac{13}{42}

of the job per hour.

So, after 42/13 of a hour, they'll complete the job. Since one hour is made of 60 minutes, 42/13 of a hour is

\dfrac{42}{13}\cdot 60 \approx 194

So, it will take them about 194 minutes to finish the job, i.e. about 3 hours and 14 minutes.

8 0
3 years ago
Use the Binomial Theorem and Pascal’s Triangle to write each binomial expansion.
tensa zangetsu [6.8K]

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3 years ago
Please help me with this math problem
svetlana [45]
First and foremost that is a quadrilateral, because it is a 4-sided figure.  If it was a trapezoid it would have only 1 set of parallel lines.  So NOT a trapezoid.  It is a parallelogram because parallelograms have 2 pair of parallel lines.  It is not a rhombus because a rhombus has 4 equal length sides.  So it's not a square either.  It is not a rectangle either because rectangles have 4 right angles and this one does not.  So your choices are 1 and 3.
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Help with this please ..
abruzzese [7]

Answer:

the answer is 2.59x10^7

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In the expression , 5.28 x 10^3 , which number is the base ?
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Bse is 10
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