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earnstyle [38]
3 years ago
8

What is the area of polygon PQRS?

Mathematics
2 answers:
PolarNik [594]3 years ago
3 0

Where are the answers?

Step-by-step explanation:

Ksju [112]3 years ago
3 0
1) starting with the rectangle 6*15 which is 90 (that’s the area for it)

2) take 8*17 for the triangle which is 136 and divide it by two 136/2 and you’ll get 68 (that’s the second area)

3) add them together to get the full area 68+90=158
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Solve these simultaneous equations:
ivolga24 [154]

Answer:

1) We have the system:

5*x - 3*y = 15

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To solve this, we first need to isolate one of the variables in one of the equations, let's isolate x in the first equation:

x = 15/5 + (3/5)*y = 3 + (3/5)*y

Now we can replace this in the other equation to get:

4*( 3 + (3/5)*y) + 3*y = 6

and solve this for y.

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x = 3 + (3/5)*y

To get the value of x.

x = 3 + (3/5)*1.11 = 3.67

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2) Now we have the system:

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Then the solution for this system is (7.4, 5.6)

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