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Sagot :
The answer to the questions from 4 through 12 are below:
- 4. z³ + 5z² + 5z + - 3
- 5. 4d + 6c - 6
- 6. 20a - 2b - 1
- 7. 40x
- 8. 10x + 16y + 14
- 9. a² + 8a - 10
- 10. 15v + 22w
- 11. 10c² + 4c
- 12. z³ - 8z² + 5z + 23
What is the perimeter of a rectangle and triangle
4. z³ + 5z + 3z² + 1 - 4 - 2z²
= z³ + 5z² + 5z + - 3
5. Perimeter of the square = Addition of all the sides
= (2d - 3) + (3c) + (2d - 3) + (3c)
= 2d - 3 + 3c + 2d - 3 + 3c
= 4d + 6c - 6
6. Perimeter of the triangle = Addition of all the sides
= (4a - 2b) + (9a - 4) + (7a + 3)
= 4a - 2b + 9a - 4 + 7a + 3
= 20a - 2b - 1
7. Perimeter of a square = 4 × side length
= 4 × 10x
= 40x
8. Perimeter of a rectangle = 2(length + width)
= 2{(2x + 7) + (3x + 8y)}
= 2(2x + 7 + 3x + 8y)
= 2(5x + 8y + 7)
= 10x + 16y + 14
Simplify the following
9. 3a + a² + 5(a - 2)
= 3a + a² + 5a - 10
= a² + 8a - 10
10. 8(v + w) + 7(v + 2w)
= 8v + 8w + 7v + 14w
= 15v + 22w
11. 4c² + 6(c + c²) - 2c
= 4c² + 6c + 6c² - 2c
= 10c² + 4c
12. z³ + 5(z + 3) + 4(2 - 2z²)
= z³ + 5z + 15 + 8 - 8z²
= z³ - 8z² + 5z + 23
Read more on perimeter:
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