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Bond [772]
3 years ago
10

In △ABC, P∈ AC so that AP:PC=3:2. If ABPC=14m2. Find AABP and AABC.

Mathematics
1 answer:
GalinKa [24]3 years ago
5 0

Caution

I just finished doing this exact same problem. In nearly 4000 answers, I don't think that's ever happened. It's a great problem. Study it carefully but make sure you handle with care. Most area questions don't work this way.

Remark:

This problem will puzzle you greatly until you look at the diagram carefully.

Draw the diagram so that AC is on the horizontal and make it the longest line. This problem does not require that you have an accurate diagram.

Eyeball P so that it looks like it divides AC in such a way that PC is 2 units and AP is about 3 units. From B draw a line that is Perpendicular to AC. It shouldn't meet P otherwise you will get confused. Where the line from B hits AC label that point D. BD is perpendicular to AC.

What you need to know

BD is the height of both triangles. What does that mean? In practical terms it means that you can call the ratio of the areas 3/2

Ratio

Triangle ABP: Triangle BPC = x/14


3:2 = x:14         Change to a proportion

3/2 = x/14         Cross multiply

3*14 = 2x          Combine

42 = 2x             Divide by 2

42/2 = x            Divide

21 = x

Conclusion One

The area of ABP = 21 square units.


Conclusion Two

Area ABC = Area ABP + Area CBP

Area ABC = 21 + 14 = 35


Nice problem. Be careful how you treat it. Usually these kind of ratio problems don't work this way.

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Answer:

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Step-by-step explanation:

There are 11 units used on the paper. If each unit is 5cm, that means you can do 11*5 and get 55 cm.

3 0
2 years ago
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PLEASE CAN SOMEONE ANSWER THIS!!!! DEADLINE SOON!!!
Verdich [7]
Hello There!

I believe that the relationships that can help you solve this problem are that the angle is Complementary and Supplementary. It is complementary because within the angle, there is an angle that is 90°. It is also supplementary because the angle itself is 180° making the angle supplementary.

I hope this helps!
8 0
3 years ago
What are 26 divide by 4,340
mart [117]
\frac { 26 }{ 4,340 } \\ \\ =\frac { 26 }{ 4\cdot { 10 }^{ 3 }+3\cdot { 10 }^{ 2 }+4\cdot { 10 }^{ 1 } } \\ \\ =\frac { 26 }{ 10\left( 4\cdot { 10 }^{ 2 }+3\cdot { 10 }^{ 1 }+4 \right)  } \\ \\ =\frac { 2\cdot 13 }{ 2\cdot 5\left( 4\cdot { 10 }^{ 2 }+3\cdot { 10 }^{ 1 }+4 \right)  } \\ \\ =\frac { 13 }{ 5\left( 4\cdot { 10 }^{ 2 }+3\cdot { 10 }^{ 1 }+4 \right)  }

\\ \\ =\frac { 13 }{ 5\left( 400+30+4 \right)  } \\ \\ =\frac { 13 }{ 2,000+150+20 } \\ \\ =\frac { 13 }{ 2,170 }

------

13/2170 = 0.006 (to 3 decimal places)
4 0
3 years ago
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Find the errors and correct the following mathematical sentences.​
lana66690 [7]

Answer:

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2 years ago
Rosie washes clothes for two families the first family pays her $500 more per month than the second. Her total earning per month
disa [49]

Answer:

  • Family 1:  $1.850
  • Family 2: $1.350

Step-by-step explanation:

We know that the total monthly payment is 3200, so if we call Pa (family A`s payment) and Pb (Family B's payment) the payments:

  • Pa+Pb=3200
  • also, Pa = Pb+500

So if we replace Pa in the first ecuation:

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then Pa+Pb=3200 => Pa= 3200-1350= $1.850

Good Luck!

8 0
3 years ago
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