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3 years ago

What is the value of k?

Mathematics

1 answer:

Georgia [21]3 years ago

8 0

Answer:55

Step-by-step explanation:

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Elaine and Rocco shared a bag of popcorn Rocco are 5/8 of the bag Elanie ate 1 3/8.how much popcorn did Elanie and Rocco eat in

amid [387]

2 bags, because when you add 5/8 and 1 3/8 you get 1 8/8 which is really 2

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4 years ago

15. If the 8% tax on an item amounts to $0.96, what is the final price (tax included) of the item?

Alex17521 [72]

Answer:

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Step-by-step explanation:

The total tax added is $0.08.

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Please help!!!!!! find the area of the whole rectangle.

Olegator [25]

Answer:

Step-by-step explanation:

The area of a rec tangle is A x W

but first you have to find the area of the triangle wich is going to be 127.5.

Then you have to multiply 127.5 times 15.

And that will give you 1,912.5.

I think this is correct, but im not sure.

8 0

3 years ago

Help please !!!!!!!!!!!!!!!!!!

Hunter-Best [27]

Answer:

n = 59

Step-by-step explanation:

There's definitely a better way, i just did math randomly but here goes:

First i squared both sides. which gets you:

$(\sqrt{n+5}-\sqrt{n-10} )(\sqrt{n+5}-\sqrt{n-10} )=1^2\\\\n+5 -2\sqrt{(n+5)(n-10)} +n-10=1$

Cleaning this up gives you:

$2n-5 -2\sqrt{(n+5)(n-10)}=1$

Now move everything to the other side so we can square this equation again

$-2\sqrt{(n+5)(n-10)}=-2n+6$

Divide both sides by -2

$\sqrt{(n+5)(n-10)}=n-3$

square again

$(n+5)(n-10)=(n-3)^2\\n^2-5n-50=n^2-6n+9$

subtract n^2 from both sides, add 6n, and add 50

$-5n-50=-6n+9\\n-50 = 9\\n=59$

Put this back into the equation and you get a correct answer!

sqrt(59 + 5) = sqrt(64) = 8

sqrt(59-10) = sqrt(49) = 7

8 - 7 = 1

5 0

3 years ago