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VMariaS [17]
3 years ago
11

A=1/2 h (b1+b2) solve for b2

Mathematics
1 answer:
Serggg [28]3 years ago
6 0
A = 1/2 *2 * h (b1+b2)
a*2 = h (b1+b2) /h
a*2/ h = b1+b2-b1
a*2-b1/ h =b2

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The equation of a circle is (x + 3)2 + (y – 5)2 = 81. Determine the coordinates of the center of the circle and the length of th
Nataly_w [17]

Answer:

The center of the circle is (-3 , 5) and the length of the radius is 9 units

Step-by-step explanation:

* Lets revise the standard form of the equation of the circle

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- This form of the equation is helpful, because you can easily find

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* Now lets solve the problem

- The equation is (x + 3)² + (y - 5)² = 81

- By comparing the two equations

∵  (x – h)² + (y – k)² = r² and  (x + 3)² + (y - 5)² = 81

# x - h = x + 3

∴ -h = 3 ⇒ divide both sides by -1

∴ h = -3

# y - k = y - 5

∴ k = 5

# h and k are the coordinates of the center of the circle

∴ The center of the circle is (-3 , 5)

# r² = 81 ⇒ take √ for both sides

∴ r = 9

∴ The length of the radius = 9 units

* The center of the circle is (-3 , 5) and the length of the radius is 9 units

3 0
3 years ago
A baseball team has home games on Friday and Saturday. The two games together earn ​$4056.00 for the team. Friday​'s game genera
klemol [59]

Answer:

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From equation (1),

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x = 1456

Hence, $ 2600 was taken on Friday​'s game and $ 1456 was taken on saturday's game.

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Answer:

Distribute or Die part 2: Attack of the PEMDAS!

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Answer:

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3 years ago
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Bob is doing a quality test on machine bots , he tested 24 bolts that he randomly found that 5 were defective. Based on bob’s re
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Answer:

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840*20.8 = 175

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2 years ago
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