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pshichka [43]
3 years ago
12

3. Which of the following is equivalent to 3(y – 1 + 2y)? A. 3y – 9 B. 6y – 3 C. 9y – 3 D. 3y – 3

Mathematics
1 answer:
IgorC [24]3 years ago
7 0

Answer:

y = 1/3

Step-by-step explanation:

3(y – 1 + 2y)

= 3y - 3 + 6y

= 3y + 6y - 3

= 9y -3

9y = 3

y = 3/9

y = 1/3

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Answer:

x = 145°

Step-by-step explanation:

We know that y = 98°, so we can find ∠DBC:

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∠DBC + z = x

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zysi [14]

Answer:

8 square units and \frac{40}{3} square units

Step-by-step explanation:

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2. Triangles ABC and DBE are similar with scale factor \frac{2}{3}, then

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3. Thus, the area of the quadrilateral DFGE is

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and the area of the quadrilateral ADEC is

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