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Nady [450]
3 years ago
14

3

Mathematics
2 answers:
noname [10]3 years ago
4 0

Answer:

Step-by-step explanation:

Did you mean  (y+4)^2 = 2?  " ^ " denotes exponentiation.

Expanding (y+4)^2 = 2, we get y^2 + 8y + 16 = 2, or

y^2 + 8y + 14 = 0

Let's apply the quadratic formula.  First, find the discriminant, b^2 - 4ac:

8^2 - 4(1)(14) = 64 - 56 = 8 (which is the square of 2√2).

Because the discriminant is positive, there are two real, unequal roots (solutions).  They are:

      -8 ± √8

x = -------------- = -4 ± √2

           2

shutvik [7]3 years ago
3 0
I believe the answer is y= -3
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2 years ago
Which fraction is the same as 3.375?
Juliette [100K]

Answer: 27/8 or 3 3/8

Step-by-step explanation:

Write 3.375 as 3.375/1

then you take the numerator 3.375 and multiply it by 1000. Multiplying is to make 3.375 a whole number. Whatever you do to the numerator, you have to do to the denominator. So, we take 1x1000 aswell. Then our fraction would be 3375/1000.  

   Then, we would find the greatest common factor. The greatest common factor, or GCF, is the greatest factor that divides two numbers. To find the GCF of two numbers: List the prime factors of each number. The GCF is 125. Then you divid 125 by the fraction, (which means that you divid the number by both the numerator and denominator) and you get the answer, which is 27/8.

  If the question is asking you to turn the fraction into a mixed number, you would have to find out how many times 8 going into 27. It goes in 3 times.  That is ur whole number. Then do 8x3 to get 24. take 27 and subtract 24 to get 3. that 3 is your numerator. The denominator stays the same.  ur final answer as a mixed number is 3 3/8.

4 0
3 years ago
Kaitlyn and Hakim each bought a tube
Pie
<h2>Answer:</h2>

<h3>container B requires more plastic to make.</h3>

<h2>Step-by-step explanation:</h2>

Container A:

diameter- 7 cm

height- 122 cm

radius- 3.5 cm

<h3>calculating for the surface area</h3>

SA=2×π×r×r+2×π×r×h

SA=2(3.14)(3.5)(3.5)+2(3.14)(3.5)(122)

SA=76.93+2681.56

SA=2758.49 cm^2

<h3>Container B:</h3>

diameter- 11 cm

height- 85 cm

radius- 5.5 cm

<h3>calculating for the surface area</h3>

SA=2×π×r×r+2×π×r×h

SA=2(3.14)(5.5)(5.5)+2(3.14)(5.5)(85)

SA=189.97+2935.90

SA=3125.87 cm^2

<h3>Container B required more plastic to make</h3>
7 0
2 years ago
Name:
swat32

Answer:

it may help you for study

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