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2 years ago

3

Mathematics

2 answers:

noname [10]2 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

shutvik [7]2 years ago

3 0

I believe the answer is y= -3

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kylee bought a pack of 12 cookies. one-third if the cookies are peanut butter. How many of the cookies in the pack are peanut bu

IceJOKER [234]

Answer:

The number of packs are peanuts butter are 4 .

Step-by-step explanation:

As given

Kylee bought a pack of 12 cookies.

one-third if the cookies are peanut butter.

Thus

$Number\ of\ packs\ of\ peanuts\ butter = \frac{1}{3}\times Total\ number\ of\ packs$

$Number\ of\ packs\ of\ peanuts\ butter = \frac{1}{3}\time 12$

$Number\ of\ packs\ of\ peanuts\ butter = \frac{12}{3}$

Number of packs are peanut butter = 4

Therefore the number of packs are peanuts butter are 4 .

4 0

2 years ago

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-1/3(n+15)=-2. what is n? please show work on paper and send it to me asap.

Anton [14]

Step-by-step explanation:

Use the distributive formula to solve for n:

-a(b + c) = -ab - ac

So, to solve this you would have to use the distributive property:

-1/3n - 5 = -2

Add 5 to both sides

-1/3n - 5 + 5 = -2 + 5

-1/3n = 3

Now, multiply -3 from both sides

-1/3 * -3 n = 3 * -3

Simplify

n = -9

Hope that helped!!

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2 years ago

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Find k so that the distance from (–1, 1) to (2, k) is 5 units. k= k= *there are two solutions for 2*

dalvyx [7]

Answer:

k = -3

k =5

Step-by-step explanation:

$d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\d = 5\\(-1,1) =(x_1,y_1)\\(2,k)=(x_2,y_2)\\$

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