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Fynjy0 [20]
3 years ago
13

Right triangle with height labeled 8 in., base labeled 6 in., and third side labeled 10 in.

Mathematics
1 answer:
Irina-Kira [14]3 years ago
6 0

Answer:

448

Step-by-step explanation:

Parallelograms = 2x14x10=280

Triangles = 3x1/2x8x14=168

280+168=448

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Tina is making rectangular signs. Each poster has an area of 1800 square inches and the length is 30 inches more than the width.
Fittoniya [83]
Let the width be x. Since the length is 30inches longer than the width, the length is 30 + x.
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30x +  x^{2} =1800 \\  x^{2} +30x-1800=0  \\  x^{2} -30x+60x-1800=0 \\ ( x^{2} -30x)+(60x-1800)=0 \\ x(x-30)+60(x-30)=0 \\ (x+60)(x-30)=0
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