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mixas84 [53]
3 years ago
14

Please help I will mark brainliest

Mathematics
1 answer:
dolphi86 [110]3 years ago
7 0

Answer:

a)(2x+1)² - 3

4x² + 4x + 1 - 3

4x² + 4x - 2

4(-2)² + 4(-2) - 2

16 - 8 - 2

6 (final answer)

b) 4(3)² + 4(3) - 2

36 + 12 - 2

46 ( final answer)

c) 2(x²-3) + 1

2x² - 6 + 1

2(3)² - 5

18 - 5

13(final answer)

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Citrus2011 [14]
First answer is the correct answer
8 0
3 years ago
Read 2 more answers
The moon has a diameter of approximately 2,200 miles. If the circumference of a circle can be found using the formula C = πd, wh
Anna007 [38]

Answer:6908 (miles) ^2

Step-by-step explanation:

diameter=2200 miles

π=3.14

Circumference=π x diameter

Circumference=3.14 x 2200

Circumference=6908 (miles)^2

4 0
3 years ago
Find the center and the radius of the circle with the equation:<br> x^2-4x+y^2
zysi [14]

Answer:

Step-by-step explanation:

8 0
3 years ago
I need help with 5-9
Goryan [66]

Answer:

5) x = 1, y = -3

6) x = -20, y = 2

7) infinite solutions

8) no solutions

Step-by-step explanation:

5)

y = 5x - 8

y = -6x + 3

5x - 8 = -6x + 3

11x = 11

x = 1

y = 5 - 8

y = -3

6)

2x + 10y = -20

-x + 4y = 28

2x = -20 - 10y

x = - 10 - 5y

-x = 28 - 4y

x = -28 + 4y

-10 - 5y  = -28 + 4y

-10 + 28 = 4y + 5y

18 = 9y

2 = y

2x + 20 = -20

2x = -40

x = -20

7)

this has infinite solutions because one equation is a simplified version of the other

8)

this has no solutions because 5 does not equal -5

9)

I can't graph on brainly, hope this helped though

3 0
3 years ago
I need help. (image below)
vovangra [49]

Answer:

∠5 = 35°

Step-by-step explanation:

∠5 = ∠2  because they are alternate interior congruent angles

∠5 = 35°

7 0
3 years ago
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