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Gekata [30.6K]
3 years ago
12

Need some help................

Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
6 0

Answer:

its option B: r=(3xy)/(x-2y)

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Classify the polygon as regular or irregular, and concave or convex.
Svetradugi [14.3K]

Answer:

This would be a regular polygon.

Step-by-step explanation:

A regular polygon has congruent sides and interior angles.

An irregular polygon does not have congruent sides and all interior angles.

A convex polygon does not have a interior angle greater than 180°.

Lastly, a concave polygon has only one interior angle greater than 180°.

Using the process of elimination, it would not be a convex or concave polygon. Now we have either a regular or irregular polygon. This polygon can not be a irregular polygon because all the sides are congruent. This means that this polygon is a regular polygon!

7 0
3 years ago
A sweatshirt that was originally priced at $42.50 has been marked down to $34.00.
Arte-miy333 [17]

Answer:

the answer is 20%.

Step-by-step explanation:

all you have to do is multiply 42.50x.20 and it gives you 8.5. to check your answer you subtract 34.00 from 42.50 and you get 8.5 as well. hope this helps!

5 0
2 years ago
5470
nadya68 [22]

Answer:  1144

Step-by-step explanation:

Given: Machine A makes 7 parts every 10 minutes.

i.e. it makes \dfrac{7}{10} parts in 1 minute.

Machine B makes 16 parts every 15 minutes.

i.e. it makes \dfrac{16}{15} parts in 1 minute.

On Monday,

machine A makes parts for 12 hours(720 minutes).    [1 hour = 60  minutes, 12 hours = 12 x 6 = 720 minutes]

i.e. Total parts made = \dfrac{7}{10}\times720

i.e. Total parts made = 504

machine B makes parts for 10 hours(=60x 10=600 minutes)

i.e. Total parts made = \dfrac{16}{15}\times600

i.e. Total parts made = 640

Total parts made by both machines = 504+640 =1144

Hence, the total number of parts made by the two machines on Monday=1144.

7 0
3 years ago
Integers are _____ rational numbers
Crazy boy [7]

Non-fraction... Do I have choices?


8 0
3 years ago
What is the equation of the line that passes through the point (-1,-5) and has a slope of -3
GalinKa [24]

Answer:

Y=-3x-8

Formula is y=Mx+b

-5=-3(-1)+b

-5=3+b

-3

-8=b

8 0
3 years ago
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