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kvv77 [185]
3 years ago
13

Use the distributive property to rewrite each expression. Then simplify (a+7)2

Mathematics
1 answer:
ASHA 777 [7]3 years ago
8 0

Answer:

2a+14

Step-by-step explanation:

2×a+2×7

2a+14

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PLEASE HELP!!!!!<br> will mark brainliest!!!!!
PSYCHO15rus [73]

Answer:

x      y

4     7

5     -1

6     -9

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2 years ago
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Help me please guys thanks
AlekseyPX

Answer:

A is correct

Step-by-step explanation:

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3 years ago
How to find the square root of complex numbers?? Find the square root of (6+8i) ??​
ivann1987 [24]

Answer:

2 \sqrt{2}  + i \sqrt{2}

Step-by-step explanation:

The square of a complex number is a complex number. Here, we have:

{(a + bi)}^{2}  = 6 + 8i

{a}^{2}  + 2abi -  {b}^{2}  = 6  + 8i

We then have this system of equations:

{a}^{2}  -  {b}^{2}  = 6

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Solving this system:

ab = 4

b =  \frac{4}{a}

{a}^{2}  -  {( \frac{4}{a}) }^{2} = 6

{a}^{2}  -  \frac{16}{ {a}^{2} } = 6

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{a}^{4}  - 6 {a}^{2}  - 16 = 0

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a = 2 \sqrt{2}

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6 0
2 years ago
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Someone help me solve this please…
azamat

Answer:

x=5.5

Step-by-step explanation:

Perimeter of ABCD=85

The perimeter is everything around the outside added together.

Form an equation:

3x+4+4x+6x-11+5x-7=85

Collect the like terms:

Like terms are terms that have the same powers and coefficient.

3x+4x+6x+5x=18x

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Put it back into an equation:

18x-14=85

Do inverse operations to find out what x is:

85+14=99

18x=99

99÷18=5.5 (we divide because, in algebra, when a number is next to a letter, it means times and as we want the inverse, you would have to divide)

x=5.5

Hope this helps :)

3 0
3 years ago
I need some help
Firdavs [7]
<span>The best answer to this problem is 0.0823. np = 48 * 1/4 = 12 The exactly 15 would be written as 14.5 to 15.5. You then plug those into you equation separately. e1= (14.5-12)/3 = 0.833 and e2 =(15.5 - 12)/3 = 1.167) p(0.833<e<1.167)= 0.0808</span>
7 0
2 years ago
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