Question

Help for medals ?

Answer 1

@jojo4eva

Answer 2

well square root means that you multiply a number times itself to get that number. for example, the square root of 36 is 6 because 6*6=36. So all you need to do is take all those numbers in your options and multiply them by themselves and see if they give you 225.

Answer 3

ok so for the first number i would do 14 x 14 ? correct?

Answer 4

yep. and what does that give you?

Answer 5

The answer is 15. because 15 x 15 = 225. Correct?

Answer 6

Correct! Great Job!

Answer 7

I gave you a medal for asking.

Answer 8

So thats how i do every problem that says evaluate ?

Answer 9

Ya, pretty much.

Answer 10

Can you help with more?

Answer 11

Sure.

Answer 12

Fire 'em at me.

Answer 13

And if you need anymore help in the future, feel free to tag me.

Answer 14

@k_lynn

Answer 15

whoa baby. I can do square roots and stuff, but I don't think I've gone over that. Maybe @confluxepic, or @iGreen can help you.

Answer 16

Uhumm xD

Answer 17

hopefully, one of them comes to help.

Answer 18

@Secret-Ninja if you have time, would you be able to help us?

Answer 19

I can try, just give me minute to read the post.

Answer 20

Sure.

Answer 21

Thanks

Answer 22

I think that the simplest thing to do its turn it into a decimal, solve it, then put the answer decimal that you get back into a fraction.

Answer 23

???

Answer 24

81/100 is 0.81 so you solve:
\[-\sqrt{0.81}\]

Answer 25

When you get your answer, turn it back into a fraction.

Answer 26

ok so i just multiply the choices by there self to see which equals 0.81 correct?

Answer 27

Yes. But to do that, you must also make the choices decimals.

Answer 28

This is giving me a headache -_-

Answer 29

Well, doesn't the answer have to be a negative?

Answer 30

Can you rule out A and B?

Answer 31

?

Answer 32

A. 10/9 = 1.1 repeated
B. 9/10 = 0.9
C. -9/10 = -0.9
D. -10/9 = 11.1 repeated

Answer 33

I doubt that it is A or D...

Answer 34

?

Answer 35

B and C both give us 0.81 and both give us a positive 0.81, but we need a negative one.

Answer 36

C is negative

Answer 37

Yes, but a negative and a negative make a positive.

Answer 38

? So the answer is?

Answer 39

I would go with C, It would work if only one of the terms was negative.

Answer 40

Thank you

Answer 41

Btw, only one question per post. I suggest you repost if you have another question ;]

Answer 42

No problem. :)