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Dmitry_Shevchenko [17]
3 years ago
9

PLease answer and explain number 8 and 9 for 10 points and brainlest

Mathematics
1 answer:
Whitepunk [10]3 years ago
4 0
I think it has to be orange x green
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Ana Maria’s heart beats 225 times in 3 minutes. How many times does her heart beat per minute?
Sophie [7]

Answer:

Her heart beats 75 times per minute.

Step-by-step explanation:

Okay, for this one, I recommend setting up a proportion table. First you will figure out that her heart beats 225 times approximately in 3 minutes (no duh), and literally all you have to do is divide 225 by 3. That's all! Then you'll get 75! I hope this helped you!

3 0
3 years ago
What is the surface area of this cylinder with diameter of 10 inches and height of 36 inches?
tatuchka [14]

Answer:

1350.88 inches

Step-by-step explanation:

A=2πrh+2πr2

4 0
2 years ago
How many degrees is an equal angle if the sum of its two adjacent angles is 320 °​
ycow [4]

Answer: 160 degrees

Step-by-step explanation:

I assume you mean two angles with = measure form a 320 deg angle

In this case it would be 320/2 = 160 degrees

6 0
2 years ago
In a rhombus MPKN with an obtuse angle K the diagonals intersect each other at point E. The measure of one of the angles of a ∆P
allsm [11]
The rhombus has a couple of very interesting properties. The first is that the diagonals meet at 90o angles.

The second is that all the sides are congruent. That's actually the key to the problem (or one of them.

The third is that the diagonals are line segments that bisect the angles where the vertex of the angle is. 

So just to make sure you understand what that last statement means <PKM  =  <NKM
K is the vertex of angle PKN 

Now the really heavy duty stuff about your question.
Given
K is obtuse. Therefore <PKM can't be 16o because MKN would also have to be 16 degrees and together they don't add up to anything over 90o.
So the 16o angle is at <EPK

Remember that the diagonals meet at right angles. <PEK = 90o

Finally all triangles have 180o
< PKE = 180 - 16 - 90 = 74. So to review
<PKE = 74o
<EPK = 16o
<PEK = 90o That's one half the problem.

Moving on to triangle PMN
By the properties of parallel lines and a rhombus  and isosceles triangles, that since PKN is bisected (rhombus property) Then PKN = 2* PKM =2*74 = 148o
The angle opposite <PKN is equal to <PKN so <PMN = <PKN
Since PKN = 148 then PMN = 148
Since KPN = 16o then PMN = 16o
Since triangle <PMN is isosceles <PNM = 16o

Summing up 
PMN = 148o
MPN = 16o
MNP = 16o

That's both triangles solved. This is a really nice little problem. If you google properties of a rhombus, you will find all the properties I have used proven. 
 
5 0
3 years ago
Read 2 more answers
Uhh pls help I got 3 mins left
Ostrovityanka [42]
The side is -15 and the top is 56
7 0
2 years ago
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