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Pie
3 years ago
6

21x 3 +28x 2 −49x−12x 2 −16x+28

Mathematics
1 answer:
Serhud [2]3 years ago
8 0

Answer:

2

1

3

+

2

8

2

−

4

9

−

1

2

2

−

1

6

+

2

8

Step-by-step explanation:

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stiv31 [10]

Answer:

12

Step-by-step explanation:

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2 years ago
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Answer:

y=40\°

Step-by-step explanation:

we know that

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The two equal angles are called the base angles and the third angle is called the vertex angle

In this problem the triangle ABC is an isosceles  triangle

so

AB=AC

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x=8\°

The sum of the internal angles of a triangle is equal to 180\°

so

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2y=180\°-20\°-80\°

2y=80\°

y=40\°

6 0
3 years ago
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Using Heron’s formula, calculate the area of the parallelogram to the nearest tenth of a square unit.
11Alexandr11 [23.1K]

Answer:

the area = 36.7

Step-by-step explanation:

3 0
3 years ago
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Tiana has already taken 1 page of notes on her own, and she will take 1 page during each hour of class. In all, how many hours w
Novosadov [1.4K]

Answer:

<u>42 Hours.</u>

Step-by-step explanation:

As an equation where y is the total pages and x is hours of class:

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43=1+1x

Subtract one on both sides

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3 years ago
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Step-by-step explanation:

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3 years ago
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