Question

PLEASE HELP ME WILL GIVE MEDAL!

12. If p varies directly with q, and p=10 when q=5, what is the value p when q=20?
A) p=1
B) p=28
C) p=40
D) p=100

13. Simplify.
Square root of 28/25
A)4square root 7 those over 5
B) square root 3
C)4square root7 those over 25
D) 2 square root 7those over 25

14. Which is the graph of the function g(x)=-|x+2|?
I can't draw the graphs because I am using an iPad

Answer 1

@Nurali

Answer 2

Varies directly means y=pq
So plug in your initial information y=(10)(5), y=50
Then set it up for the second situation, using what you solved y for
50=20p, p=5/2

Answer 3

And for the second part, is the question \[\sqrt{\frac{ 28 }{ 25 }}\] or \[\frac{ \sqrt{28} }{ 25 }\] ? It makes a big difference, i'm assuming it's the first one

Answer 4

let p = kq say k is some constant,
than,
10=k.5 ................. equation1
p=k.20 .................. equation 2
divide equation1 by equation 2 to get p=40

Answer 5

Actually, judging by the answers, it's the 25 is not under the sqrt

Answer 6

It's the first one

Answer 7

\[\frac{ \sqrt{28} }{ 25 }=\frac{ \sqrt{(4)(7)} }{ 25 }=\frac{ \sqrt{(2^2)(7)} }{ 25 }=\frac{ 2\sqrt{7} }{ 25 }\]

Answer 8

Thank you @princeharryyy and @scorcher219396

Answer 9

sqrt(28/25) = 2*sqrt(7)/5

Answer 10

@scorcher219396 that is not an option though

Answer 11

sqrt(28)/25 = 2sqrt(7)/25

Answer 12

Yes it is, it's the last one, based on what you typed

Answer 13

depending on what the question want to say

Answer 14

And for the graphs, it would be a v shape (shape of absolute value), flipped upside down because of the - in front, and moved right 2 because of the -2

Answer 15

Oh I'm sorry the last one is actually 2sqrt(7)/25

Answer 16

No I mean it's over 5!

Answer 17

Omg lol

Answer 18

Oh gotcha. Then it would just be sqrt(25) simplified to 5

Answer 19

(in the denominator)

Answer 20

Oh okay thank you!

Answer 21

I am going to opena new question so I can give u a medal lol since I already gave one to prince @scorcher219396

Answer 22

12. p = kq
k = p/q = 10/5 = 2
p = 2q

p = 2 x 20 = 40

Answer 23

13. Square root of 28 / 5, the square root of 28 can be reduced to the square root of 4 x 7, which reduces to 2 x square root of seven; so you end up with 2 x square root of seven / 5

Answer 24

@princeharryyy I don't have that as an option

Answer 25

14. http://www.wolframalpha.com/input/?i=g%28x%29%3D-%7Cx%2B2%7C

Answer 26

Thank you @Nurali

Answer 27

Anytime.

Answer 28

then wait a sec le' me check

Answer 29

It's okay I got it hahah thank you so much though!!! <3

Answer 30

do u have this ooption

Answer 31

option*

Answer 32

Yes thank you :)

Answer 33

welcome :)