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Amanda [17]
3 years ago
5

Virginia had 3600 dollars in her saving account. She withdrew 2/5 of the money and donated 1/2 of this to the orphanage. How muc

h money did she donate?
Mathematics
1 answer:
mylen [45]3 years ago
4 0

Answer:

$720

Step-by-step explanation:

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Marat540 [252]

The factoring the equation (a + 1)² - 4b² we get (a+1+2b)(a+1-2b).

<h3>What is the factoring function of (a + 1)² - 4 b²?</h3>

Given:  (a + 1)² - 4b²

Apply Perfect Square Formula, and we get

(a + b)² = a² + 2 a b + b²

(a + 1)² = a² + 2a1+1²

= a² + 2a1 + 1² - 4 b²

simplifying the equation, we get

a² + 2a1 + 1² = a² + 2a + 1

= a² + 2a + 1 - 4b²

Factor, a² + 2a + 1 = (a + 1)²

= (a + 1)² - 4 b²

Simplify 4 b² = (2 b)²

= (a + 1)² - (2b)²

Apply the Difference of Two Squares Formula, and we get

x² - y² = (x + y)(x - y)

(a + 1)² - (2b)² = ((a + 1) + 2b)((a + 1) - 2 b)

simplifying the equation, we get

= ((a + 1) + 2b)(a + 1) - 2 b)

= (a + 1 + 2b)(a + 1 - 2b)

Therefore, the correct answer is (a+1+2b)(a+1-2b).

To learn more about factoring refer to:

brainly.com/question/25829061

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7 0
2 years ago
Suppose that $4500 is placed in an account that pays 16% interest compounded each year. Assume that no withdrawals are made from
kiruha [24]
So what you do is simple it is only one year that you are getting the 16% so how to solve is this way: $4500 + 16%= $5220

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4 years ago
How many congruent sides does an equilateral triangle have?
RideAnS [48]

Answer:

3 congruent sides

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A cereal company estimates that its monthly cost is
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Answer:

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Step-by-step explanation:

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The perimeter of the triangle below is 4x +3y . Find the measure of the missing side.​
garri49 [273]

Answer:

missing side: 2x+3y

Step-by-step explanation:

Since the given 2 sides are x-y and x+y and P=4x+3y,

x-y+x+y= 2x

4x+3y-2x= 2x+3y

Check:

x-y+x+y+2x+3y= 4x+3y

6 0
3 years ago
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